| Patent | Date |
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Process for producing elastic polyurethane moldings with compact surfaces and cellular cores
Grant 6,331,577 - Volkert , et al. December 18, 2 | 2001-12-18 |
Production of rigid polyurethane foams having a low thermal conductivity
Grant 6,046,247 - Gluck , et al. April 4, 2 | 2000-04-04 |
Production of plastic foams, preferably rigid foams containing urethane groups or urethane and isocyanurate groups, and blowing agent-containing emulsions for this purpose
Grant 5,300,534 - Volkert , et al. April 5, 1 | 1994-04-05 |
Production of rigid polyurethane foams, and a blowing agent mixture for this purpose
Grant 5,290,823 - Volkert March 1, 1 | 1994-03-01 |
Production of plastic foams, preferably rigid foams containing urethane groups or urethane and isocyanurate groups, and blowing agent-containing emulsions for this purpose
Grant 5,278,195 - Volkert , et al. January 11, 1 | 1994-01-11 |
Production of plastic foams, preferably rigid foams containing urethane groups or urethane and isocyanurate groups, and blowing agent-containing emulsions for this purpose
Grant 5,205,956 - Volkert , et al. April 27, 1 | 1993-04-27 |
Preparation of integral skin cellular plastics by the polyaddition process in the presence of tertiary alcohols
Grant 5,189,068 - Boehme , et al. February 23, 1 | 1993-02-23 |
Production of cellular plastics by the polyisocyanate polyaddition process, and low-boiling, fluorinated or perfluorinated, tertiary alkylamines as blowing agent-containing emulsions for this purpose
Grant 5,187,206 - Volkert , et al. February 16, 1 | 1993-02-16 |
Esters containing bonded fluorocarbon and oxypropylenealkylether groups, emulsions containing these esters and their use for the preparation of cellular plastics by polyisocyanate polyaddition
Grant 5,126,379 - Volkert , et al. June 30, 1 | 1992-06-30 |
Process for the preparation of polyurethane rigid foams having a low thermal conductivity and their use
Grant 5,096,933 - Volkert March 17, 1 | 1992-03-17 |
Preparation of emulsifier-free aqueous polyurethane dispersions
Grant 5,055,516 - Fisch , et al. October 8, 1 | 1991-10-08 |
Process for producing cellular plastics by the polyisocyanate polyaddition method by means of stable emulsions containing blowing agents, and such emulsions
Grant 4,972,002 - Volkert November 20, 1 | 1990-11-20 |
Cellular, molded polyurethane parts, process for their preparation by thermoforming of polyester-urethane foam and their use
Grant 4,508,774 - Grabhoefer , et al. April 2, 1 | 1985-04-02 |
Storage-stable prepolymers sprayable from a pressure vessel
Grant 4,258,140 - Horacek , et al. March 24, 1 | 1981-03-24 |
Manufacture of light-stable polyurethane integral foams
Grant 4,256,841 - Horacek , et al. March 17, 1 | 1981-03-17 |
Process for the manufacture of polyurethane adhesives
Grant 4,156,064 - Falkenstein , et al. May 22, 1 | 1979-05-22 |
Manufacture of thin layers of polyurethane elastomers
Grant 4,013,806 - Volkert , et al. March 22, 1 | 1977-03-22 |
Acetals which act as photoinitiators
Grant 4,007,209 - Hickmann , et al. February 8, 1 | 1977-02-08 |
Monoketal of diketones as sensitizer for u.v. polymerizable systems
Grant 3,998,712 - Hickmann , et al. December 21, 1 | 1976-12-21 |
Laminates for the manufacture of flexographic printing plates comprising photocrosslinkable reaction product of saturated polyester glycol, diisocyanate, and diol
Grant 3,948,665 - Richter , et al. April 6, 1 | 1976-04-06 |
Lithographic Printing Plates And Photoresists Comprising A Photosensitive Polymer
Grant 3,849,137 - Barzynski , et al. November 19, 1 | 1974-11-19 |
Production Of Gravure Printing Plates Based On Plastics Materials
Grant 3,770,435 - Volkert , et al. November 6, 1 | 1973-11-06 |
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