Stable dispersions and their use in the preparation of...

Details Stable dispersions and their use in the preparation of... Stable dispersions and their use in the preparation of...

C - Chemistry, Metallurgy

08

G

C08G 18/28 (2006.01) C08G 18/08 (2006.01) C08G 18/32 (2006.01) C08G 18/40 (2006.01) C08J 9/00 (2006.01)

Patent

CA 2096217

Mo3809 PU-266 STABLE DISPERSIONS AND THEIR USE IN THE PREPARATION OF POLYURETHANE FOAMS ABSTRACT OF THE DISCLOSURE The present invention relates to an improved process for preparing foams comprising reacting polyisocyanates with an in situ produced stable low solids dispersion of polyureas and/or polyhydrazodicarbonamides in a hydroxyl-group-containing material as a dispersing agent by reacting: (a) organic polyisocyanates with (b) a member selected from the group consisting of (i) polyamines containing primary and/or secondary amino groups, (ii) hydrazines, (iii) hydrazides, or (iv) mixtures thereof, in (c) said hydroxyl-group-containing material. Mo3809.

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