发明名称 |
Colour developing pigment for carbonless copy papers,manufacturing process of it and carbonless copy paper and coating composition containing said pigment |
摘要 |
<p>A color developing pigment (I) for carbonless copy paper (II) is based on acid activated smectic layer silicates (III) whereby a phenolic resin is condensed onto (III). Independent claims are also included for: (1) a process for the production of the pigment (I) by mixing a suspension of acid activated smectic layer silicate with a solution or emulsion of a phenol, preferably a para-substituted phenol with addition of formaldehyde to carry out the polycondensation and separation of the phenolic resin coated layer silicate; (2) an aqueous color stain (IV) containing 30-50 (38-48) wt.% (I) and optionally an extender pigment as well as a conventional binding agent; and (3) a carbonless copy paper (II) coated with the pigment (I) or color stain (IV).</p> |
申请公布号 |
EP0919396(B1) |
申请公布日期 |
2002.04.10 |
申请号 |
EP19980120591 |
申请日期 |
1998.10.30 |
申请人 |
SUED-CHEMIE AG |
发明人 |
RUF, FRIEDRICH DR. |
分类号 |
B41M5/155;C08K9/08;(IPC1-7):B41M5/155 |
主分类号 |
B41M5/155 |
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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