Process for the production of stable dispersions

Details Process for the production of stable dispersions Process for the production of stable dispersions

C - Chemistry, Metallurgy

08

G

400/106, 400/112

C08G 18/12 (2006.01) C08G 18/08 (2006.01) C08G 18/30 (2006.01) C08G 18/32 (2006.01) C08G 18/40 (2006.01)

Patent

CA 1068841

A PROCESS FOR THE PRODUCTION OF STABLE DISPERSIONS Abstract of the Disclosure The instant invention is directed to stable dispersions and the process of their manufacture. The stable dispersions of the instant invention comprise polyureas and/or polyhydrazo-dicarbonamides as the dis- perse phase in an hydroxyl group containing material selected from the group consisting of polyethers, poly- esters, polyester amides, polycarbonates, and mixtures thereof, and are produced by reacting (1) organic poly- isocyanates with (2) polyamines containing primary and/or secondary amino groups and/or hydrazines and/or hydrazides in (3) the hydroxyl group containing material. Component (3) may also contain relatively low molecular weight polyols and/or inert organic solvents. Components (1), (2) and (3) are continuously introduced into a flow mixer in such a quantity that the average residence time in the mixer is less than ten minutes.

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