Water impermeable polyurethanes

Details Water impermeable polyurethanes Water impermeable polyurethanes

C - Chemistry, Metallurgy

08

G

403/14, 403/26

C08G 18/66 (2006.01) C08G 18/16 (2006.01) C08G 18/22 (2006.01) C08G 18/28 (2006.01)

Patent

CA 1051588

Abstract of the Disclosure - Low density water impermeable polyurethane foams containing alkyl substituents of from 10 to 21 carbon atoms and to a composition and process for preparing hydrophobic urethane foams comprising reacting a mixture of a polyalkylene polyol having reactive hydrogen atoms as determined by the Zerewitinoff method exhibiting a molecular weight of at least 500, at least one hydrophoblc alkyl compound containing from 10 to 21 carbon atoms per active hydrogen atom capable of reacting with an isocyanate, water, at least one gel catalyst, at least one foaming catalyst, and an organlc polylsocyanate.

190098

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