发明名称 |
Self-contained pressure sensitive copying material and its production |
摘要 |
Free formaldehyde is removed from a formaldehyde-containing suspension of microcapsules by the addition of a compound having a B dicarbonyl group or a cyclic ketone. The thus-treated microcapsules are particularly suitable for the production of self-contained pressure sensitive copying material in which the image-generating reactants are present in a single coating composition.
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申请公布号 |
US4612556(A) |
申请公布日期 |
1986.09.16 |
申请号 |
US19840658365 |
申请日期 |
1984.10.05 |
申请人 |
THE WIGGINS TEAPE GROUP LIMITED |
发明人 |
PINOT DE MOIRA, PETER |
分类号 |
B01J13/20;B41M5/165;(IPC1-7):B41L1/20;B41M3/12 |
主分类号 |
B01J13/20 |
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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