发明名称 |
Process for the preparation of water-dispersible or water-soluble blocked polyisocyanates, the blocked polyisocyanates obtainable by this process and lacquer binders containing these blocked polyisocyanates as isocyanate component |
摘要 |
Blocked polyisocyanates with improved water-dispersible or water-soluble properties are prepared by reacting polyisocyanates, in which 50 to 99.8% of the isocyanate groups are blocked, optionally in a solvent-free environment with an organic polyaminosulphonate or an organic polyaminosulphonic acid in sufficient quantities to provide an end product containing from 0.1 to 10%, by weight, of sulphonate groups (SO3-). The blocked polyisocyanates have particular utility when used in combination with hydrophobic polyhydroxyl compounds as binders in aqueous coating compounds.
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申请公布号 |
US4284544(A) |
申请公布日期 |
1981.08.18 |
申请号 |
US19790102059 |
申请日期 |
1979.12.10 |
申请人 |
BAYER AKTIENGESELLSCHAFT |
发明人 |
WEGNER, CHRISTIAN;FINDEISEN, KURT;WEIDER, FRANZ |
分类号 |
C08G18/00;C08G18/08;C08G18/62;C08G18/80;C08G18/83;C09D175/00;C09D175/04;(IPC1-7):C08L75/06 |
主分类号 |
C08G18/00 |
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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