C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
400/4301, 400/55
C08L 75/02 (2006.01) C08G 18/08 (2006.01) C08G 18/32 (2006.01) C08G 18/38 (2006.01) C08G 18/40 (2006.01) C08L 75/04 (2006.01)
Patent
CA 1334310
Stable finely-divided dispersions of polyureas and/or polyhydrazodicarbonamides in a hydroxyl- group-containing material are made by reacting (i) an isocyanate with (ii) a compound selected from polyamines, hydrazines, hydrazides and mixtures thereof in the presence of (iii) a hydroxyl compound selected from polyethers, polyesters, polyester amides, poly- carbonates and mixtures thereof and (iv) a catalyst. The catalyst is a compound which catalyzes the reaction of isocyanate groups with hydroxyl groups. The catalyst is used in a quantity of at least 50 parts per million parts of (i), (ii) and (iii). These dispersions are particularly useful in the production of polyurethanes.
602918
Keegan Richard E.
Koshute Mark A.
Lowery Michael K.
Keegan Richard E.
Koshute Mark A.
Lowery Michael K.
Miles Inc.
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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