C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
400/106, 400/743
C08G 18/62 (2006.01) C08G 18/08 (2006.01) C08G 18/38 (2006.01) C08G 18/66 (2006.01) C08L 75/04 (2006.01)
Patent
CA 1246263
STABLE DISPERSIONS OF POLYUREAS AND/OR POLYHYDRAZO- DICARBONAMIDES IN RELATIVELY HIGH MOLECULAR WEIGHT HYDROXYL-GROUP CONTAINING MATERIALS, A PROCESS FOR THE PRODUCTION THEREOF AND THE USE THEREOF FOR THE PRODUCTION OF POLYURETHANE PLASTICS ABSTRACT OF THE DISCLOSURE The present invention is directed to a stable dispersion of a polyurea and/or a polyhydrazodicarbon- amide in a relatively high molecular weight hydroxyl- group containing material, which dispersion has a solids content of from 5 to 50 percent by weight and which is obtained by reacting a) an organic di- and/or polyisocyanate with b) an amine-functional material comprising an addition product of 1) acrylonitrile and 2) a member selected from the group consisting of i) hydrazine, ii) aliphatic di- or polyamines containing at least two primary amino groups, iii) cycloaliphatic di- or polyamines containing at least two primary amino groups, iv) araliphatic di- or polyamines contain- ing at least two primary amino groups, and v) mixtures thereof, the ratio of 1) to 2) being at least one mol of 1) per mol of 2) and at most one mol of 1) for each nitrogen atom contained in 2) per mol of 2), the reaction of component a) and component b) being conducted at a temperature of from 30 to 170°C, at an equivalent ratio of components a) to b) of from 0.8:1 to 1.5:1, and in the presence of -2- c) a relatively high molecular weight, hydroxyl- group containing material. The invention also relates to the production and use of such dispersions.
498116
Dietrick Manfred
Hettel Hans
K"onig Klaus
Seifert Peter
Vehlewald Peter
Aktiengesellschaft Bayer
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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