发明名称 |
PROCESSO PARA FABRICACAO DE CAPSULAS DIMINUTAS;MATERIAL EM FORMA DE LAMINA |
摘要 |
A salt of a Periodic Group 1A cation or a tertiary or quaternary ammonium cation and an anion of a strong acid is used in a process for manufacturing minute capsules by polycondensing melamine formaldehyde capsule wall precursor material in an acidic aqueous manufacturing vehicle also containing a negatively charged polymeric carboxyl-substituted polyelectrolyte material. The resulting capsules may be used in pressure-sensitive copying materials. |
申请公布号 |
BR8301972(A) |
申请公布日期 |
1983.12.20 |
申请号 |
BR19838301972 |
申请日期 |
1983.04.18 |
申请人 |
APPLETON PAPERS INC. |
发明人 |
DONALD EDWARD HAYFORD |
分类号 |
B01J13/02;B01J13/18;B41M5/165;C08L61/28;(IPC1-7):C08G12/32 |
主分类号 |
B01J13/02 |
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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