发明名称 |
PROCESS FOR PREPARING SELF-DISPERSING PIGMENTS |
摘要 |
The disclosure provides a process for preparing a self-dispersing pigment having an isoelectric point of at least about 8 comprising: (a) adding a dual functional compound with an acidic aluminum salt to form an aqueous solution, wherein the dual functional compound comprises an anchoring group that attaches the dual-functional compound to the pigment surface, and a basic amine group comprising a primary, secondary or tertiary amine; (b) adding a base to the mixture from step (a) whereby the pH is raised to about 4 to about 9 to form a turbid solution; and (c) adding the mixture from step (b) to a slurry of inorganic particles whereby a hydrous alumina and the dual functional compound are deposited on the pigment surface. The self-dispersing pigments prepared by this process are useful in making décor paper that may be used in paper laminates. |
申请公布号 |
US2015337138(A1) |
申请公布日期 |
2015.11.26 |
申请号 |
US201314441243 |
申请日期 |
2013.10.24 |
申请人 |
E.I.DU PONT DE NEMOURS AND COMPANY |
发明人 |
VANHECKE FRANCK ANDRE;CHINN MITCHELL SCOTT |
分类号 |
C09C3/00;C09C3/08;C09C1/36;C09C3/06 |
主分类号 |
C09C3/00 |
代理机构 |
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代理人 |
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主权项 |
1. A process for preparing a self-dispersing pigment having an isoelectric point of at least about 8 comprising:
(a) adding a dual functional compound with an acidic aluminum salt to form an aqueous solution, wherein the dual functional compound comprises:
i. an anchoring group that attaches the dual-functional compound to the pigment surface, andii a basic amine group comprising a primary, secondary or tertiary amine; (b) adding a base to the mixture from step (a) whereby the pH is raised to about 4 to about 9 to form a turbid solution; and (c) adding the mixture from step (b) to a slurry of inorganic particles whereby a hydrous alumina and the dual functional compound are deposited on the pigment surface. |
地址 |
Wilmington DE US |