Open-celled flexible polyurethane foams and a process for...

Details Open-celled flexible polyurethane foams and a process for... Open-celled flexible polyurethane foams and a process for...

C - Chemistry, Metallurgy

08

G

403/43

C08G 18/34 (2006.01) C08J 9/08 (2006.01)

Patent

CA 2035253

Mo3527 LeA 27,541 OPEN-CELLED FLEXIBLE POLYURETHANE FOAMS AND A PROCESS FOR THEIR PRODUCTION ABSTRACT OF THE DISCLOSURE Open-celled, elastic, flexible polyurethane foams are made without using a chlorofluorocarbon blowing agent. A polyisocyanate is reacted with a polyether in the presence of water and from about 0.1 to about 10% by weight (based on polyether) of an organic blowing agent selected from dicarbonic acid alkyl esters, dicarbonic acid cycloalkyl esters, dicarbonic acid benzyl esters and combinations thereof. Optional starting materials include catalysts, chain lengthening agents, emulsifiers and other commonly used additives. Mo3527

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