Process for the production of polysiloxane ionomers,...

Details Process for the production of polysiloxane ionomers,... Process for the production of polysiloxane ionomers,...

C - Chemistry, Metallurgy

08

J

403/30

C08J 9/02 (2006.01) C08G 18/08 (2006.01) C08G 18/61 (2006.01) C08J 9/00 (2006.01) C08L 75/04 (2006.01)

Patent

CA 1284699

A PROCESS FOR THE PRODUCTION OF POLYSILOXANE IONOMERS, POLYSILOXANE IONOMERS AND THEIR USE FOR THE PRODUCTION OF CELLULAR POLYURETHANE ELASTOMERS ABSTRACT OF THE DISCLOSURE The present invention is directed to a process for the production of waterproof, fine-cell polyurethane elastomers having a density of about 300 to 800 kg/m3 by reacting a) organic polyisocyanates, b) polyhydroxyl compounds having a molecular weight of about 400 to about 8000, c) water and, optionally, d) organic chain-extending agents containing at least two isocyanate-reactive hydrogen atoms and having a molecular weight of 32 to 399, the equivalent ratio of isocyanate groups to NCO-re- active groups in the overall formulation being about 0.90:1 to 1.20:1, characterized in that polysiloxane ionomers are added to the water/crosslinker component in concentrations of about 0.1 to 5% by weight, based on the reaction mixture as a whole.

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