U.S. patent application number 11/748892 was filed with the patent office on 2008-11-20 for multifunction finishing liquids containing dendrimers and the application of the liquids in textile finishing.
This patent application is currently assigned to THE HONG KONG POLYTECHNIC UNIVERSITY. Invention is credited to Jinlian Hu, Qinghao Meng, Kangming Nie, Guanghong Zheng.
Application Number | 20080282480 11/748892 |
Document ID | / |
Family ID | 40026038 |
Filed Date | 2008-11-20 |
United States Patent
Application |
20080282480 |
Kind Code |
A1 |
Hu; Jinlian ; et
al. |
November 20, 2008 |
Multifunction Finishing Liquids Containing Dendrimers and the
Application of the Liquids in Textile Finishing
Abstract
A finishing liquid which containing as least one kind of
dendrimer molecules with terminal groups of --NH.sub.2, --OH,
--COOH, --COOR, --R, --Si--O--R, PAMAM-OS, --R-halogen etc, or with
groups which can be modified to achieve the above groups was
invented. Employing sol-gel or solution method, the finished
textiles obtain part of the following multifunction: breathable,
water proof, oil repellency, soil repellency, anti-static, anti-UV
irradiation, anti-bacterial, dying acceleration, and slowly release
of drug and perfume.
Inventors: |
Hu; Jinlian; (Hong Kong,
CN) ; Nie; Kangming; (Hong Kong, CN) ; Meng;
Qinghao; (Hong Kong, CN) ; Zheng; Guanghong;
(Hong Kong, CN) |
Correspondence
Address: |
GLOBAL IP SERVICES
7285 W. Eagle Court
Winton
CA
95388
US
|
Assignee: |
THE HONG KONG POLYTECHNIC
UNIVERSITY
Hong Kong
CN
|
Family ID: |
40026038 |
Appl. No.: |
11/748892 |
Filed: |
May 15, 2007 |
Current U.S.
Class: |
8/194 ; 8/115.51;
8/115.65; 8/127.6 |
Current CPC
Class: |
C08L 101/005 20130101;
D06M 2200/25 20130101; D06M 15/6436 20130101; D06M 2200/12
20130101; D06M 2200/00 20130101; D06M 15/61 20130101; D06M 15/59
20130101 |
Class at
Publication: |
8/194 ; 8/115.51;
8/115.65; 8/127.6 |
International
Class: |
D06M 13/322 20060101
D06M013/322 |
Claims
1. A finishing liquid for use in textile multifunction finishing
comprising at least one kind of dendrimer having a core with
branched polymeric arms attached to and extending from said
core.
2. The finishing liquid of claim 1, wherein said multifunction
includes breathable, water proof, oil repellency, soil repellency,
anti-static, anti-UV irradiation, anti-bacterial, dying
acceleration and, slowly release of drug and perfume.
3. The finishing liquid of claim 1, wherein said dendrimer is
selected from the dendrimers that containing at least one terminal
group of --NH2, --OH, --COOH, --COOR, --R, --Si--O--R, PAMAM-OS,
--R-halogen, or dendrimers containing groups that can be modified
to achieve the above groups.
4. The finishing liquid of claim 1, wherein said dendrimer reacts
with textiles substrate or adheres physically on textile
substrate.
5. The finishing liquid of claim 1, wherein said finishing liquid
includes inorganic components of TiO2, SiO2 precursor which form
cross linked net or form a film to be fixed on the textile
substrate by finishing technology.
6. The finishing liquid of claim 1, wherein said dendrimer is
selected from the dendrimers with the number of repeat units is
from two to eleven, and the number of core arm per core branch
point is more than three.
7. The finishing liquid of claim 5, where in said finishing
technology is by sol-gel method or physical adhesion and chemical
reaction.
8. The finishing liquid of claim 7, wherein the process of
finishing technology is with the steps of: impregnation or padding;
pre-drying; hot pressing; and curing.
9. The finishing liquid of claim 1, where in said textile is made
of cotton, wool and synthesis fabrics.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Field of Invention
[0002] The present invention relates to the preparation of
multifunctional finishing liquids containing dendrimers and the
application methods in multifunction finishing of textiles.
[0003] 2. Brief Summary of the Prior Art
[0004] Dendrimers, called the 21st century new materials, are a
class of unique structural material. They distinguished themselves
to conventional linear polymers by peculiar nano sphere structure
with internal voids and channels; the multiform architecture; high
regularity and molecular weights monodispersity; high density of
reactive terminal functional groups. A schematic molecule of a
typical dendrimer PAMAM (polyamidoamine) is illustrated in FIG. 1.
And the structure of the dendrimer is illustrated in FIG. 2. The
dendrimers consist of a central core linked to layers of repeating
units (generations) and a number of terminal groups. These units
are interdependent and create a unique molecular shape. The
molecular weight, diameters and terminal group number of different
generation PAMAM dendrimers are tabulated in Table 1. Because of
their unique structures, dendrimers have a variety of intriguing
potential applications like catalyst, sensor, drug delivery, and
reaction matrix. The strategies for the design of dendritic
macromolecules have convergent, divergent, and double-stage
convergent growth methods.
TABLE-US-00001 TABLE 1 Molecular weight, measured diameter and
surface groups number of different generation Dendrimer (PAMAM)
Molecular Measured Surface Generation Weight Diameter (.ANG.)
Groups 0 517 15 4 1 1,430 22 8 2 3,256 29 16 3 6,909 36 32 4 14,215
45 64 5 28,826 54 128 6 58,048 67 256 7 116,493 81 512 8 233,383 97
1024 9 467,162 114 2048 10 934,720 135 4096
[0005] The dendrimers are of different properties because of the
employed different reaction monomer, generation number, and
terminal groups. Besides, by employing different initiator and
different synthesis methods, different shape dendrimer molecules
such fan-shaped, half ball-shaped, elliptic, cylindrate,
mushroom-shaped dendrimers with special properties can be
developed. Because of dendrimer special features, they have great
potential in textile multifunction finishing.
BRIEF DESCRIPTION OF THE INVENTION
[0006] The textiles with special function such as anti-UV
irradiation, anti-bacteria, anti-static, water proof and high
moisture permeability, oil repellency, soil repellency as well as
favourable dyeing ability for hydrophobic fibres were obtained
through finishing process. However, generally the multifunction can
not be achieved by one-step finishing.
[0007] On the contrary, the multifunction finishing liquid
containing dendrimers make the above functions achieved within one
step: The inorganic functional chemicals through sol-gel method can
react with dendirmers terminal groups. After the finishing process,
a special cubic net comprising nano dendirmer and functional
inorganic chemicals are form on the textile substrate. This special
structure can bring textile with functions of anti-UV irradiation,
anti-bacteria etc. The dendrimers with functional inorganic salts
offer a way to provide enhanced properties. The dendirmers with
--COOH, --NH.sub.2, etc terminal groups can bring finished textiles
with hydrophilic, anti-bacterial, antistatic etc simultaneously.
The dendrimers with alkyl terminal groups provide textile with
water proof, good hand feeling, and soil-repellency. The
amphiphilic dendrimers and dendimers having siloxane groups
finishing bring textiles with good hand feeling and as carrier and
phase transfer enhance the dyeing effect of hydrophobic fibres.
Also, because of the dendrimers nano structure, it brings textiles
with functions of nano material finishing of time enduring, high
wash ability while low influence to textiles styles. The terminal
groups of dendrimers can be modified to obtain the groups in need
to offer versatile function to textile which bring much more
difference function to textiles. Besides, because of dendrimers
molecules internal voids and channels in the nano sphere, it offers
a way for drug or perfume embed and controllable release in
finished textiles. The principle of molecular design of the
dendrimer is shown in FIG. 3.
[0008] One finishing liquid preparation and application technology
is through sol-gel method. First, nano-dendritic molecules and
different function inorganic precursors such as TiO.sub.2 and
SiO.sub.2, are made into sol as finishing liquid. The multifunction
finishing liquid is composed of 0.1 wt % dendrimer molecules and
10.0-15.0 wt % functionalized inorganic precursors and distilled
water. The finishing process includes impregnation or padding,
drying and post curing. The post curing temperature and time are
set according to different textiles. After textiles finished a
special cubic cross linked net structure will be developed on
textile between yarns gap and on yarns surface. The finished
textiles can obtain functions of water proof, breathable,
anti-static, soil repellency, oil repellency, anti-UV irradiation,
anti-bacterial.
[0009] Compared with conventional finishing liquids, the
multifunctional finishing liquids have many advantages: simplifying
finishing process; reducing cost while increasing performance;
environmental friendly; good hand feeling; healthy and safe (no
Fluorine).
[0010] The typical employed dendrimers PAMAM-OH, PAMAM-NH.sub.2,
PAMAM-CH.sub.3, PAMAM-Si(OR).sub.3, PAMAM-OS, polysiloxane are
shown in FIGS. 4.about.9 respectively.
BRIEF DESCRIPTION OF THE DRAWINGS
[0011] FIG. 1 shows the typical dendrimers' structure, and PAMAM
that frequently studied as functional macromolecules.
[0012] FIG. 2 is the schematic structure of a dendrimer
macromolecule.
[0013] FIG. 3 is the molecular design of dendrimers for textile
finishing.
[0014] FIGS. 4-9 are typical employed dendrimers PAMAM-OH,
PAMAM-NH.sub.2, PAMAM-CH.sub.3, PAMAM-Si(OR).sub.3, PAMAM-OS,
Polysiloxane.
[0015] FIG. 10 shows textile surface after finished by dendrimer
macromolecules.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
Example 1
[0016] The finishing liquid was a sol system made of dendrimer
PAMAM-Si(OR).sub.3 and TiO.sub.2 precursor. The main ingredients
were; TiO.sub.2 precursor TBT 0.1.about.1.0 mol/L, dendrimer (1 ml,
solved in isopropanol with 10 v %) 0.1.about.1.0 mol/l; butanol
0.1.about.1.0 mol/L; dilute hydrochloric acid. After it reacted
with textiles, the textiles had the properties of time enduring
antibacterial, anti UV-radiation, antistatic etc.
[0017] The preparation methods of the finishing composites water
sol were as follows; the TBT precursor solution (0.1 mol/L),
dendrimers (1 ml, solved in isopropanol with 10 v %), and HCl
solution was prepared in advance. Then the TBT and ethanol were
mixed in a dried beaker to make a homogenous solution by stirring.
At last, the mixture solution was added dropwise to pre-adjusted PH
distilled water while controlling reaction temperature at
50.degree. C.
[0018] The finishing process were; impregnation and padding
(pick-up 60%).fwdarw.pre-dry (80.degree. C., 2 min).fwdarw.hot
pressing (150.degree. C., 30 S).fwdarw.curing (160.degree. C., 3
min)
Example 2
[0019] The finishing liquid was PAMAM-R solution in distilled
water. Technological process included two steps. The first step was
pretreatment which aimed to get rid of surface active substance and
impurity. The pretreatment chemical was naphthalene sulfuric acid.
The liquor Ratio was 30:1 and the temperature was 60.degree. C. for
30 min. Multifunction finishing using PAMAM-CH.sub.3 technological
process was: impregnation.fwdarw.padding (pick up
70.about.80%).fwdarw.bake (130.about.150.degree. C., 2 min). By
coating with special adhesive on textile, the dendrimer molecules
are attached to the textile surface. As can be seen from FIG. 10,
because of the small surface tension and molecule orientation of
hydrocarbon, a hydrophobic lay are formed on the textile surface.
The --CH3 of dendrimer molecule can not reverse, the large quantity
of rigid --CH.sub.3 are arranged on the textile surface orderly
after heat treatment. The hydrophobic lay is long lasting because
--CH3 form cocrystallization. The finished textiles have endured
wash ability, good hand feeling.
Example 3
[0020] The finishing liquid was made of dendrimer PAMAM
(NHCOCH.sub.2CH.sub.2COOH).sub.16 solution in water. After it
reacted with textiles, the textiles had the properties of water
proof and the high moisture permeability. Intermittent impregnating
method was employed in applying this multifunction finishing
liquids for finishing textiles made of cellulose fibers. Dendrimers
concentarion was ranged from 2.0 to 20 w %. The finishing process
was water Bath.fwdarw.enzyme bath.fwdarw.water
bath.fwdarw.desiccate.fwdarw.weight.fwdarw.spray or impregnate
finishing wok liquid (70 w % of textile).fwdarw.dry until 20% pick
up content.fwdarw.cool air blast (liquid pick up 10%).fwdarw.hot
pressing.fwdarw.curing.fwdarw.cool and dampening.fwdarw.package.
The finished textile had the functions of hydrophilic,
soil-repellency, and antistatic.
* * * * *