U.S. patent application number 11/235504 was filed with the patent office on 2006-02-16 for dust repellant compositions.
This patent application is currently assigned to Petroferm, Inc.. Invention is credited to Steve Hayes, Christopher Shannon.
Application Number | 20060035030 11/235504 |
Document ID | / |
Family ID | 27805158 |
Filed Date | 2006-02-16 |
United States Patent
Application |
20060035030 |
Kind Code |
A1 |
Shannon; Christopher ; et
al. |
February 16, 2006 |
Dust repellant compositions
Abstract
Sprayable, liquid polymeric film-forming compositions containing
an amount of an anti-static polymer that is effective to provide
films formed from the composition with resistance to the deposition
of dust, soil or grime on the surface thereof, wherein the surface
tension of the liquid composition is less than about 25
milli-newtons per meter. Methods for preventing the accumulation of
dust, soil, or grime on surfaces such as a vehicle tire, wheel or
wheel cover are also disclosed.
Inventors: |
Shannon; Christopher;
(Yulee, FL) ; Hayes; Steve; (Fernandina Beach,
FL) |
Correspondence
Address: |
SYNNESTVEDT & LECHNER, LLP
2600 ARAMARK TOWER
1101 MARKET STREET
PHILADELPHIA
PA
191072950
US
|
Assignee: |
Petroferm, Inc.
Fernandina Beach
FL
|
Family ID: |
27805158 |
Appl. No.: |
11/235504 |
Filed: |
September 26, 2005 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
10383365 |
Mar 7, 2003 |
6949271 |
|
|
11235504 |
Sep 26, 2005 |
|
|
|
60362318 |
Mar 7, 2002 |
|
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Current U.S.
Class: |
427/372.2 ;
252/8.81; 427/162 |
Current CPC
Class: |
C09K 3/16 20130101; B05D
5/08 20130101; C09D 201/00 20130101; C09D 5/00 20130101; C09K 3/22
20130101 |
Class at
Publication: |
427/372.2 ;
427/162; 252/008.81 |
International
Class: |
D06M 13/224 20060101
D06M013/224; B05D 5/06 20060101 B05D005/06; B05D 3/02 20060101
B05D003/02 |
Claims
1-18. (canceled)
19. A composition for preventing the accumulation of dust, soil or
grime on a hard surface, comprising: (1) an anti-static component
in an amount effective to provide said polymeric film with
anti-static properties sufficient to resist dust, soil and grime
accumulation, wherein said anti-static component consists of one or
more compounds selected from the group consisting of: (A)
anti-static polymers that also contribute to lowering the surface
tension of said liquid composition; (B) wetting agents for lowering
the surface tension of said liquid composition that also contribute
anti-static properties to said polymeric film coating; and (C)
polymers that only contribute anti-static properties to said film
coating; (2) a surface tension-lowering component in an amount
effective to lower the surface tension of said liquid composition
below about 25 milli-newtons per meter, wherein said surface
tension-lowering component comprises one or more compounds selected
from the group consisting of: (A) anti-static polymers that also
contribute to lowering the surface tension of said liquid
composition; (B) wetting agents for lowering the surface tension of
said liquid composition that also contribute anti-static properties
to said polymeric film coating; and (C) wetting agents that only
contribute to lowering the surface tension of said liquid
composition that also contribute anti-static properties to said
polymeric film coating.
20. The composition claim 1, wherein said composition is a
water-based emulsion.
21. The composition of claim 1, wherein said composition is a
water-based solution.
22. The composition of claim 1, wherein said composition has a
surface tension less than about 22 milli-newtons per meter.
23. The composition of claim 1, wherein said anti-static component
or said surface tension-lowering component of said composition
comprises a wetting agent.
24. The composition of claim 6, wherein said wetting agent is a
polymeric wetting agent.
25. The composition of claim 1, wherein said composition further
comprises a surface adhesion-promoting polymer.
26. The composition of claim 7, wherein said surface
adhesion-promoting polymer is selected from the group consisting of
polyacrylates, polyurethanes and cationic polymers.
27. The composition of claim 1, wherein said anti-static component
of said composition comprises a polar film-forming non-ionic
polymer.
28. The composition of claim 1, wherein said anti-static component
of said composition comprises an anionic, amphoteric or
zwitterionic polymer.
29. The composition of claim 10, wherein said anti-static component
comprises an anionic fluorinated polymer.
30. The composition of claim 11, wherein said surface
tension-lowering component is a silicone wetting agent.
31. The composition of claim 12, wherein said silicone wetting
agent is a silicone carboxylate or silicone ester.
32. The composition of claim 12, wherein said composition further
comprises a surface adhesion-promoting polymer.
33. The composition of claim 1, wherein said anti-static component
and said surface tension-lowering component of said composition
both comprise the same anti-static polymer that also contributes to
lowering the surface tension of said liquid composition.
34. The composition of claim 1, wherein said anti-static component
and said surface tension-lowering component of said liquid
composition both comprise the same wetting agent for lowering the
surface tension of said liquid composition that also contributes
anti-static properties to said polymeric film.
35. The composition of claim 1, wherein said anti-static component
and said surface tension-lowering component of said composition are
both supplied by an anti-static polymer that also contributes to
lowering the surface tension of said liquid composition.
36. The composition of claim 1, wherein said anti-static component
and said surface tension-lowering component of said composition are
both supplied by a wetting agent for lowering the surface tension
of said liquid composition that also contributes anti-static
properties to said polymeric film.
Description
FIELD OF THE INVENTION
[0001] The present invention relates to a method of coating
surfaces with a low surface energy anti-static film that repels
dust, soil and grime in a manner that is suitable for use by a
typical consumer. This invention also relates to compositions for
use by consumers to repel dust, soil and grime from surfaces. The
invention more particularly relates to methods and compositions for
repelling dust soil and grime, and in particular brake dust, from
the surface of vehicle wheel and wheel covers.
BACKGROUND OF THE INVENTION
[0002] A wide variety of automobile appearance products are used in
consumer applications to maintain the original appearance of
automobiles. Specifically, numerous wheel and tire cleaners are
commercially available to maintain the appearance of soiled tires
and metal or plastic wheels, wheel covers or hubcaps. These tire
cleaners are typically acidic formulations, with pH ranges from 2
to 4. The extreme acidity is required to effectively remove brake
dust, road soil and grime. These formulations also typically use
anionic, amphoteric or nonionic surfactants to enhance the
detergency of the tire and wheel cleaning formulation. The
extremely low pH of these formulations makes their compatibility
poor with many metallic wheels and most of these products are
devised for use on clear-coated wheels so there is no (or very low)
chance of acid corrosion. The compositions must be washed or wiped
from the tires and wheels within 15 seconds to one minute to
prevent damage to wheels and also to facilitate cleaning.
[0003] Fox example, U.S. Pat. No. 5,733,377, issued to Michael
Howe, discloses the use of an acid composition to clean road soil
and grime from wheel surfaces. This composition has the
disadvantage of low pH and the use of fluoride salts which may be
detrimental to the environment and human safety. Other commercial
compositions that claim to remove brake dust, road soil and grime
use combinations of surfactants, coupling solvents (such as
2-butoxyethanol) and/or strong organic acids such as oxalic,
sulfamic, hydroxyacetic or propionic acid. Such strong acidity is
required to remove the soil, dust and grime that adheres to wheel
and tires substantively. In the relatively rare case of alkaline
cleaning agents, a high degree of builder is again needed to loosen
transportation deposits.
[0004] There exists a need for compositions that reduce the
accumulation of dust, soil and grime on vehicle wheels without the
use of harsh chemicals. A product that would also function to
reduce dust, soil and grime accumulation on surfaces in general
would be particularly desirable.
SUMMARY OF THE INVENTION
[0005] A method has now been discovered in which a composition may
be applied to surfaces in general and vehicle wheels, wheel covers
and tires in particular, that delivers a film that is repellant to
soils, dust (including brake dust) and grime. Furthermore, the
delivery method is in a manner that typical consumers can use
safely to apply the film to a surface such as a wheel, wheel cover
or tire. For automotive surfaces, the application of this film
substantially reduces or eliminates the need for harsh acidic,
caustic or solvent-borne cleaners to maintain wheel and tire
appearance. This now offers consumers the ability to treat a wheel
and tire once with a repellant film to maintain its appearance.
Consumers can deliver the films from aerosol or trigger spray
packages, gels or pre-saturated wipes.
[0006] According to one aspect of the present invention a
sprayable, liquid polymeric film-forming composition is provided
containing an amount of anti-static polymer that is effective to
provide films formed from the composition with resistance to the
deposition of dust, soil or grime on the surface thereof, wherein
the surface tension of the liquid composition is less than 25
milli-newtons per meter. The low surface tension of the liquid
composition provides the polymer films formed therefrom with a low
surface energy that contributes to the dust, soil and grime
resistance.
[0007] The present invention incorporates the discovery that
anti-static polymeric films with a sufficiently low surface energy
will repel dust, soil and grime in a manner heretofore unobtained
in the art. The present invention further incorporates the
discovery that liquid polymeric film-forming composition having
surface tensions less than about 25 milli-newtons per meter will
form films of anti-static polymer with the low surface energy that
produces such unexpected results.
[0008] Compositions according to the present invention may be
formulated from one or more of the following components: [0009] (A)
Anti-static polymers that also contribute to lowering the surface
tension of the liquid compositions, thereby lowering the surface
energy of the polymeric films; [0010] (B) Wetting agents for
lowering the surface tension of the liquid compositions and
consequently the surface energy of the polymeric films--including
polymeric wetting agents--that also contribute to the anti-static
properties of the polymeric films; [0011] (C) Polymers that only
contribute anti-static properties to the polymeric films; [0012]
(D) Wetting agents that only contribute to lowering the surface
tension of the liquid compositions and lowering the surface energy
of the polymeric films. One or more of the foregoing are employed,
provided the resulting liquid composition has a surface tension
less than about 25 milli-newtons per meter. That is, a Component
A-type polymer can be used alone if it provides the resulting
aqueous composition with the requisite surface tension; if not,
Component B and/or Component D may be added to the composition to
lower the surface tension below about 25 milli-newtons per meter.
Similarly, Component B can be used alone if it provides aqueous
compositions capable of forming polymer films with the anti-static
properties needed to resist the deposition of dust, soil or grime.
If not, Component A and/or Component C may be added to such liquid
compositions to increase the anti-static properties of the
resulting polymer films. Alternatively, liquid compositions may be
prepared solely from combinations of Component-C-type and Component
D-type materials; or, all four components may be combined to
provide an liquid composition according to the present
invention.
[0013] For most applications, the liquid composition will be
water-based. When all the components of a given composition are
water-soluble, the composition will be an aqueous solution. If one
or more of the components are not water-soluble, then the
composition must be formed as an emulsion by conventional
techniques using emulsifying surfactants.
[0014] Compositions according to the present invention may
optionally include a substantiative polymer providing water
resistance to the polymeric film. Water resistance increases the
durability of the films.
[0015] The quantities of composition components employed are
selected to provide the compositions with the desired surface
tension and the polymeric films prepared therefrom with the desired
anti-static and low surface energy properties, yet at the same time
maintain the viscosity of the liquid compositions low enough so
that the compositions may be conveniently applied, for example by
spraying and wiping. Typically, a viscosity less than 100
centipoise at room temperature is preferred unless the composition
is delivered in gel form. The pH of the compositions is adjusted to
maintain storage stability and to meet end-use requirements of the
selected application means. This will vary depending upon the
components used and the application device selected, but can be
readily determined by one of ordinary skill in the art without
undue experimentation.
[0016] According to another aspect of the present invention, a
method is provided for preventing the accumulation of dust, soil or
grime on a surface by applying a composition according to the
present invention thereto so that a polymeric film coating is
formed thereon resistant to the deposition of soil, dust and grime.
The composition coating is left on the surface as a protective
polymeric film. The composition may be applied to the surface by
means of aerosol or trigger spray device, as a gel, or from a
pre-saturated wipe.
[0017] Examples of some of the surfaces included within the method
of the present invention include automotive surfaces, such as
engine components and vehicle tires, wheels or wheel covers;
optical surfaces, for which dust is a particular problem; the
surface of product packages, including retail product packaging, to
maintain product appearance regardless of storage duration or
conditions; and household surfaces, such as furniture, floors,
walls, and the like, to reduce the frequency with which such
surfaces must be cleaned.
[0018] With respect to automotive applications, unlike prior art
compositions that have been developed to remove brake dust, road
soil and grime from tires, wheels and wheel covers, the
compositions of the present invention form a protective film or
barrier that is repellant to dust, soil and grime. The above and
other features and advantages of the present invention will become
clear from the following description of the preferred
embodiment.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0019] The sprayable, liquid polymeric film-forming compositions of
the present invention contain an amount of an anti-static polymer
that is effective to form a polymeric film resistant to the
deposition of dust, soil or grime on the surface thereof. The
anti-static polymer components of the compositions of the present
invention provide the films prepared therefrom with a negative
charge sufficient to repel such dust, soil or grime. Suitable
polymers include anionic polymers, as well as amphoteric and
zwitterionic polymers. While amphoteric and zwitterionic polymers
contain both positive and negative charges, the positive charge
typically is associated with the substrate on which the polymer
film is coated, providing the surface of the film with the net
negative charge needed to repel dust, soil and grime.
[0020] Any non-ionic polymer that forms a negatively charged film
may also be used. Examples of such non-ionic polymers include, but
are not limited to, polysiloxanes, such as poly(dimethylsiloxanes)
and poly(methyl hydrogen siloxanes), hydroxy-functional
poly(dimethylsiloxanes), and the like. Other examples of non-ionic
polymers include capped acrylates, polyamides, and acetate
copolymers.
[0021] Examples of anionic polymers includes, but are not limited
to, anionic silicone carboxylates, anionic fluorocarbons,
poly(acrylic acids), polysulfonates, and the like.
[0022] Examples of amphoteric polymers include, but are not limited
to, amphoteric fluorocarbons, amphoteric silicones, poly(amide
acrylate) copolymers, polybetaines, and the like. Zwitterionic
polymers suitable for use with the present invention include, but
are not limited to, fluorinated carboxy betaines, fluorinated amino
acids, silicone betaines, and the like.
[0023] The amount of anti-static polymer employed must be
sufficient to provide the resulting polymeric films with the
requisite anti-static properties, but should be below that quantity
that would result in a composition viscosity too thick for the
selected end-use applicator. This can be readily determined by one
of ordinary skill in the art without undue experimentation. The
level of anti-static polymer will range from about 0.1 to about 10
weight percent, and more typical will be in a range between about
0.5 and about 1.0 weight percent. The present invention includes
all possible ranges within the broadest range defined, beginning
with 0.2 weight percent, 0.3 weight percent, 0.4 weight percent,
and so forth, and ending with 7 weight percent, 8 weight percent, 9
weight percent, and so forth, with ranges incorporating the levels
of anti-static polymer depicted in the Examples being
preferred.
[0024] A correlation has been discovered between the surface
tension of the liquid composition and the surface energy of the
polymeric films coated therefrom. For a film to have a surface
energy low enough to effectively repel dust, soil and grime, the
liquid composition must have a surface tension no greater than
about 25 milli-newtons per meter. A surface tension less than about
22 milli-newtons per meter is preferred, with a surface tension
less than about 20 milli-newtons per meter being even more
preferred. According to the current state of the art, commercially
feasible surface tensions below about 15 milli-newtons per meter
are difficult to obtain. Therefore, typical compositions according
to the present invention will have a surface tension between about
15 and 25 milli-newtons per meter.
[0025] The surface tension of the liquid compositions may be
reduced by adding a wetting agent. The use of a wetting agent may
be optional or critical depending upon the surface energy of the
anti-static polymer. Wetting agents must be added to liquid
compositions of anti-static polymers having a surface tension above
about 25 milli-newtons per meter. They also may be optionally added
to liquid composition of anti-static polymers having surface
tensions below about 25 milli-newtons per meter to further reduce
the surface tension.
[0026] Suitable wetting agents can be readily identified by those
of ordinary skill in the art without undue experimentation.
Examples include, but are not limited to, silicone compounds such
as silicone copolyols, silicone sulfates, methyl hydrogen silicone
emulsions, silicone oil emulsions, silicone carboxylates, silicone
esters, and the like. Examples of other wetting agents include, but
are not limited to, ethoxylated alcohols, sulfate and
sulfosuccinate surfactants, and the like.
[0027] Polymeric wetting agents such as fluoropolymers, may also be
used. Examples of fluoropolymers include
poly(tetrafluoroethylene)(PTFE), ethoxylated fluorocarbons,
perfluorooctanyl sulfonate derivatives, and fluorinated polyesters,
and the like.
[0028] The wetting agent may also contain anionic species
contributing to the anti-static properties of polymeric films
formed from the liquid compositions. This includes amphoteric and
zwitterionic materials, as well as anionic materials, because these
materials will also express their negative charge at the polymeric
film surface to repel dust, soil and grime.
[0029] Examples of polymeric wetting agents that contribute to
anti-static properties include, but are not limited to,
zwitterionic polymers, such as, for example, betaines, carboxy
betaines, phosphobetaines, sulfobetaines, and glycinates;
amphoteric polymers, such as, for example amphoteric fluorocarbons,
anionic polymers, such as, for example, anionic silicones, such as
fluorosilicone polyesters, fluorosiloxanes and anionic
fluorocarbons such as phosphated fluorocarbons, fluoroacylates, and
the like. Examples of other anionic polymer wetting agents include,
but are not limited to, dioctyl sulfosuccinates, ditridecyl
sulfosuccinates, and the like.
[0030] The amount of wetting agent employed is that quantity
effective to reduce the surface tension of the liquid composition
below about 25 milli-newtons per meter. If the liquid composition
surface tension is below about 25 milli-newtons per meter without
the wetting agent, then the quantity employed is optional and is
that amount effective to lower the surface tension of the liquid
composition. The quantity employed should not be so great as to
increase the viscosity of the liquid composition above that which
can be used with standard consumer-product packaging such as
aerosol and trigger-spray delivery systems, aqueous and non-aqueous
gels and saturated wipes. Typically, from about 0 to about 5 weight
percent of the wetting agent, in addition to the anti-static
polymer employed, will be used. Preferred levels of wetting agent
range between about 0.1 and about 1.0 weight percent. Again, the
present invention includes all possible ranges within the broadest
range defined, beginning with 0.05 weight percent, 0.1 weight
percent, 0.2 weight percent, and so forth, and ending with 2 weight
percent, 3 weight percent, 4 weight percent, and so forth, with
ranges incorporating the levels of wetting agent polymer depicted
in the Examples being preferred.
[0031] The liquid compositions may also optionally include a
film-forming polymer that promotes the substantivity of the
polymeric film, as well as its substrate adhesion. Examples of such
polymers include, but are not limited to, polyacrylates,
polyurethanes, cationic polymers such as polyvinylpyrrolidone,
polyamines, polyamides, and the like. An amount effective to
increase the substantivity and surface adhesion of the polymeric
film without increasing the liquid composition viscosity above that
useful to product applications is employed. In compositions in
which a substantivity and surface adhesion-promoting polymer is
used, the level of such polymer will typically be between about 0.5
and about 2 weight percent, and preferably be between about 1.0 and
about 1.5 weight percent. Once more, the present invention includes
all possible ranges within the broadest range defined, beginning
with 0.6 weight percent, 0.7 weight percent, 0.8 weight percent,
and so forth, and ending with 1.25 weight percent, 1.75 weight
percent, and so forth, with ranges incorporating the levels of
film-forming polymer depicted in the Examples being preferred.
[0032] The substantivity and adhesion-promoting polymer may
increase the surface tension of the liquid composition, making
desirable the use of a surface wetting agent. If the substantivity
and surface adhesion-promoting polymer increases the surface
tension of the liquid composition above 25 milli-newtons per meter,
then the inclusion of a surface wetting agent will be required.
[0033] When water-based, the compositions of the present invention
are solutions if all of the components are water-soluble. When at
least one of the components is water-insoluble, the water-based
compositions are formed as emulsions instead. The emulsions are
formed by essentially conventional techniques employing anionic
and/or non-ionic emulsifiers. The emulsifier is selected to
maintain the surface tension of the aqueous emulsion below about 25
milli-newtons per meter, otherwise the resulting polymeric film
will attract, rather than repel, dust, soil and grime. For example,
surfactants that have a large hydrophobic, fatty moiety, such as
stearic acid or stearyl alcohol derived surfactant emulsifiers
actually increase dust and soil loading on the surfaces of the
polymeric films to which they have been added.
[0034] The liquid compositions of the present invention may
optionally incorporate a plurality of anti-static polymers, a
plurality of wetting agents, and/or a plurality of polymers
contributing surface adhesion and substantivity. The liquid
compositions may also optionally include one or more spreading and
leveling agents, foaming agents, pH buffers, dyes, fragrances,
biocides, corrosion inhibitors, and the like. The inclusion of
these optional additives may also require the addition of a wetting
agent to maintain the surface tension of the liquid composition
below about 25 milli-newtons per meter.
[0035] The pH buffers are used to adjust the aqueous compositions
pH to the level needed for long term storage stability, and also to
ensure compatibility with delivery systems. For example, stainless
steel cans for aerosol products require a minimum pH of 9. The pH
requirements and the means by which these may be obtained can be
readily determined by one having ordinary skill in the art without
undue experimentation. Examples of pH buffers include acetic acid,
ammonium hydroxide, phosphate buffers, monoethanolamine salts, urea
salts, and the like.
[0036] The liquid compositions of the present invention are
formulated for aerosol or trigger-spray delivery, or as aqueous and
non-aqueous gels and saturated wipes by essentially conventional
techniques that do not require description. For saturated wipes,
the liquid compositions are impregnated onto a woven or a non-woven
cloth. Optional additives include antioxidants, fragrances,
biocides, and dyes. Gelling agents for aqueous and non-aqueous gels
include, but are not limited to, acrylate resins, polyamide resins,
cellulose derivatives, alginates, and silica.
[0037] Aerosol and trigger-spray delivery systems require a product
having a viscosity less than about 100 centipoise at room
temperature. Such compositions have a total polymer content between
about 0.1 and about 5 percent by weight, and typically between
about 0.5 and about 1.0 percent by weight. Intermediate polymer
levels can also be used, including all possible ranges within the
broadest range defined, beginning with 0.2 weight percent, 0.3
weight percent, 0.4 weight percent, and so forth, and ending with 2
weight percent, 3 weight percent, 4 weight percent, and so forth,
with ranges incorporating the levels of polymer depicted in the
Examples being preferred.
[0038] Compositions for aerosol delivery do not require water and
may be dissolved in paraffinic solvents instead, which are
conventional solvent bases for aerosol delivery of such polymers in
other applications. The maximum amount of water present in a
composition for trigger-spray delivery may be us to about 99% by
weight.
[0039] Aqueous solutions according to the present invention are
prepared simply by dissolving the polymeric component in water.
When polyacrylates are used as the adhesion-promoting,
substantivity-increasing polymer additive, the pH of the water must
first be increased through the addition of ammonium hydroxide or
other Lewis bases to dissolve the polyacrylate. This is also well
know to those of ordinary skill in the art. After the polyacrylate
is dissolved, the other polymer components and any other
ingredients are dissolved in the solution. A final pH adjustment is
then performed to bring the composition to the pH required for
storage stability and delivery.
[0040] Emulsions are prepared by dissolving the water-soluble
ingredients in the water component, which is then adjusted to the
pH required for storage stability and the delivery system. The
emulsifiers and water-insoluble components are then combined and
blended with the water phase. The blend is then homogenized to form
a stable emulsion.
[0041] The compositions of the present invention are either sprayed
on surfaces such as vehicle tires, wheels and wheel covers using an
aerosol or trigger-spray applicator, or, when formulated as aqueous
or non-aqueous gels or saturated wipes, the compositions are
applied by wiping onto the surface of the tire, wheel or wheel
cover. The compositions of the present invention may also be
applied as a step of a commercial car washing process. Regardless
of how the composition is applied, excess material may be removed
by wiping to leave a coating that dries to form a protective
barrier film that repels dust, including brake dust, grime and
soil. The compositions may be used on the tires, wheels and wheel
covers of essentially any on-road or off-road vehicle, including
automobiles, trucks, motorcycles, bicycles, and the like. The
compositions may be dried by the application of heat or permitted
to air-dry under ambient conditions.
[0042] The compositions of the present invention may be coated on
essentially any surface for which a protective and dust, grime or
soil repellant barrier is desired. Other examples of end-uses
include the protection of optical surfaces, product packaging
surfaces, household surfaces, aircraft surfaces and surfaces for
grinding operations.
[0043] The following non-limiting examples set forth herein below
illustrates certain aspects of the invention. All parts and
percentages are by weight unless otherwise noted.
EXAMPLES
Example 1
[0044] A brake dust repellant composition was prepared containing
the following components: TABLE-US-00001 TABLE I WEIGHT CHEMICAL
PERCENT COMMERCIAL NAME DESCRIPTION 0.20 Lambent MFF 199 silicone
copolyol 10.0 L31 fluid (Crompton) methyl hydrogen siloxane 1.0
Triton W30 anionic emulsifier 0.50 Triton TMN-6 non-ionic
emulsifier Acetic acid to pH 4-5
[0045] The silicone copolyol, manufactured by Petroferm of
Feranandina Beach, Fla., functions as a wetting agent. The methyl
hydrogen siloxane functions as an anti-static agent. The two
emulsifiers were combined and then blended with the methyl hydrogen
siloxane and silicone copolyol. The mixture was then blended with
88.3 weight percent water adjusted with acetic acid below pH 6.
This blend was then homogenized to form a stable emulsion, which
was further adjusted with acetic acid to pH 4-5. The surface
tension of the composition was measured and determined to be 22
milli-newtons per meter.
Example 2
[0046] A brake dust repellant composition was prepared containing
the following components: TABLE-US-00002 TABLE II WEIGHT CHEMICAL
PERCENT COMMERCIAL NAME DESCRIPTION 0.50 Zonyl FSK (Dupont)
Amphoteric Fluorocarbon 0.50 Lambent CSI-DT (Petroferm) Silicone
Carboxylate 0.80 Avalure AC-115 (Noveon) Acrylate Copolymer
Ammonium Hydroxide to pH 9
[0047] The amphoteric fluorocarbon functions as an anti-static
agent. It also contributes to surface tension reduction and surface
wetting. The silicone carboxylate functions as a wetting agent. The
acrylate copolymer contributes substantivity and surface adhesion
to the polymeric film.
[0048] The composition was prepared by adjusting 98.2 weight
percent water to pH 9 with ammonium hydroxide. The acrylate
copolymer was then dissolved after which the amphoteric
fluorocarbon and silicone carboxylate were then dissolved in the
solution. The pH was checked and adjusted again to 9 using ammonium
hydroxide. The surface tension of the composition was measured and
determined to be 19 milli-newtons per meter.
Example 3
[0049] A brake dust repellant composition was prepared using the
following components: TABLE-US-00003 TABLE III WEIGHT CHEMICAL
PERCENT COMMERCIAL NAME DESCRIPTION 0.60 PA 10 (Essential
Ingredients) Anionic fluorocarbon 0.80 Avalure AC-i 15 (Noveon)
Acrylate copolymer 0.50 Lambent WS-100 (Petroferm) Silicone sulfate
Ammonium Hydroxide pH 9
[0050] The anionic fluorocarbon functions as an anti-static agent
and contributes to surface wetting and surface tension reduction.
The silicone sulfate functions as a wetting agent. The acrylate
copolymer functions to promote substrate adhesion and
substantivity. The components were combined to form an aqueous
solution as in Example 2. The solution surface tension was measured
at 20 milli-newtons per meter.
EVALUATION
[0051] The front wheels of test vehicles with known brake dust
deposition problems were coated with the compositions of Examples
1-3 using a trigger sprayer (Calmar). The color (amount of soil) of
the treated areas was rated biweekly by four observers. The ratings
were from 1 (no brake dust or soil deposition) to 4 (dark
appearance) and were judged relative to a clean, untreated wheel of
the same model and manufacturer. Ratings were taken for six weeks
on treated wheels that were not washed or otherwise disturbed
except for normal variations in weather and driving conditions. The
results are depicted in Table IV: TABLE-US-00004 TABLE IV WEEK
COMPOSITION 1 2 3 4 5 6 EXAMPLE 1 1 1 1.5 1.5 1.5 1.5 EXAMPLE 2 1 1
1 1.5 1.5 1.5 EXAMPLE 3 1 1.5 1.5 1.5 1.5 1.5
[0052] The present invention thus provides brake dust repellant
compositions that form a dry, rugged film on vehicle tires, wheels
and wheel covers that can be washed off with ordinary soap and
water.
Example 4
[0053] A household dust repellant composition was prepared
containing the following components: TABLE-US-00005 TABLE V WEIGHT
CHEMICAL PERCENT COMMERCIAL NAME DESCRIPTION 0.20 Lambent SW-CP-K
silicone carboxylate 0.75 Flexipel AM-100 (Essential) Anionic
Fluorinated polymer 0.50 Sokolan PA 30 CL (BASF) Polyacrylate
[0054] The silicone carboxylate, manufactured by Petroferm, Inc of
Fernandina Beach, Fla. functions as a wetting agent and contributes
to the anti-static properties of the composition. The Flexipel
AM-100 functions as a polymer to lower the surface energy of the
system. The Sokolan PA 30 CL functions to give substantivity to
hard surfaces. The product was made into an aqueous solution by the
addition of 98.55% water.
Example 5
[0055] A dust repellant composition suitable for use in optics
applications was prepared containing the following components:
TABLE-US-00006 TABLE VI WEIGHT CHEMICAL PERCENT COMMERCIAL NAME
DESCRIPTION 0.10 Lambent MFF 199SW silicone copolyol 0.45 Flexipel
AM-100 (Essential) Anionic Fluorinated polymer 0.3 Lambent Phos
A-100 Silicone phosphate
[0056] The silicone cpolyol, manufactured by Petroferm, Inc of
Fernandina Beach, Fla. functions as a wetting agent. The Flexipel
AM-100 and the Lambent Phos A-100 function as an anti-static
polymer blend to lower the surface energy of the system. The
Sokolan PA 30 CL functions to give substantivity to hard surfaces.
The product is made into an aqueous solution by the addition of
99.15% water and the pH adjusted to 7.
[0057] The foregoing examples and description of the preferred
embodiment should be taken as illustrating, rather than as
limiting, the present invention as defined by the claims. As would
be readily appreciated, numerous combinations of the features set
forth above can be utilized without departing from the present
invention as set forth in the claims. Such variations are not
regarded as a departure from the spirit and scope of the invention,
and all such modifications are intended to be included within the
scope of the following claims.
* * * * *