发明名称 |
Process for the production of stable dispersions, the dispersions so produced, and the use thereof in the manufacture of polyurethanes |
摘要 |
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, polycarbonates 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.
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申请公布号 |
US4855352(A) |
申请公布日期 |
1989.08.08 |
申请号 |
US19880225403 |
申请日期 |
1988.07.28 |
申请人 |
MOBAY CORPORATION |
发明人 |
LOWERY, MICHAEL K.;KEEGAN, RICHARD E.;KOSHUTE, MARK A. |
分类号 |
C08G18/08;C08G18/32;C08G18/38;C08G18/40;C08L75/04 |
主分类号 |
C08G18/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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