| 发明名称 |
Concentrated microcapsule suspensions for reaction copying papers |
| 摘要 |
A process for the production of aqueous suspensions containing from 35 to 60% by weight of microcapsules by interfacial polyaddition from polyisocyanates and H-active compounds, wherein (a) an isocyanaurate-modified aliphatic polyisocyanate is used as the polyisocyanate, and (b) the suspension is adjusted to a pH-value of </=7 after the polyaddition reaction, which microcapsules optimally contain dye precursors and can be used for the production of completely or partly coated copying systems by the rotogravure or flexograph processes.
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| 申请公布号 |
US4428978(A) |
申请公布日期 |
1984.01.31 |
| 申请号 |
US19810265537 |
申请日期 |
1981.05.20 |
| 申请人 |
BAYER AKTIENGESELLSCHAFT |
发明人 |
JABS, GERT;BAATZ, GUENTHER;BOCK, MANFRED;DAHM, MANFRED;HAUS, ARTUR;WEGNER, CHRISTIAN |
| 分类号 |
C08G18/00;B01J13/16;B41M5/165;C08G18/79;C09D11/00;(IPC1-7):B01J13/02;B41M3/12;C09D11/02 |
主分类号 |
C08G18/00 |
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