发明授权
US4284544A 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
失效
用于制备水分散性或水溶性封闭多异氰酸酯的方法，通过该方法获得的封端多异氰酸酯和含有这些封端多异氰酸酯作为异氰酸酯组分的漆基粘合剂
- 专利标题： 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
- 专利标题（中）： 用于制备水分散性或水溶性封闭多异氰酸酯的方法，通过该方法获得的封端多异氰酸酯和含有这些封端多异氰酸酯作为异氰酸酯组分的漆基粘合剂
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申请号： US102059申请日： 1979-12-10
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公开(公告)号： US4284544A公开(公告)日： 1981-08-18
- 发明人: Christian Wegner , Kurt Findeisen , Franz Weider
- 申请人： Christian Wegner , Kurt Findeisen , Franz Weider
- 申请人地址： DEX Bayerwerk
- 专利权人： Bayer Aktiengesellschaft
- 当前专利权人： Bayer Aktiengesellschaft
- 当前专利权人地址： DEX Bayerwerk
- 优先权： DEX2853937 19781214
- 主分类号： C08G18/00
- IPC分类号： C08G18/00 ; C08G18/08 ; C08G18/62 ; C08G18/80 ; C08G18/83 ; C09D175/00 ; C09D175/04 ; C08L75/06
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 (SO.sub.3.sup.-). The blocked polyisocyanates have particular utility when used in combination with hydrophobic polyhydroxyl compounds as binders in aqueous coating compounds.
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