发明名称 |
METHOD FOR PRODUCING A SELF-CONTAINED PRESSURE-SENSITIVE COPYING MATERIAL INVOLVING THE REMOVAL OF FREE FORMALDEHYDE FROM A FORMALDEHYDE-CONTAINING SUSPENSION OF MICROCAPSULES |
摘要 |
<p>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.</p> |
申请公布号 |
EP0138448(B1) |
申请公布日期 |
1988.06.15 |
申请号 |
EP19840306541 |
申请日期 |
1984.09.26 |
申请人 |
THE WIGGINS TEAPE GROUP LIMITED |
发明人 |
PINOT DE MOIRA, PETER |
分类号 |
B01J13/20;B41M5/165;(IPC1-7):B41M5/12;B01J13/02 |
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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