发明名称 |
METHOD FOR PREPARING EMULSION RESIN COMPOSITION FOR CATIONIC ELECTRODEPOSITION COATING |
摘要 |
The present invention is to provide a method for preparing an emulsion resin composition for a cationic electrodeposition paint, which prepare a cationic electrodeposition paint composition as reducing time for desolvation time or eliminating desolvation step. The present invention provide a method for preparing an emulsion resin composition for cationic electrodeposition paint, which comprises a cationic resin and a blocked isocyanate curing agent, the method comprises the steps:
(1) a step of mixing water and the cationic resin to form a W/O emulsion,
(2) a step of mixing the blocked isocyanate curing agent and the W/O emulsion to form a curing agent-containing W/O emulsion,
(3) a step of mixing water and the curing agent-containing W/O emulsion to form an O/W emulsion, via a phase inversion point from W/O emulsion to O/W emulsion,
wherein the cationic resin comprises a cationic epoxy resin, and
a solid concentration by mass X W/O (%) of the curing agent-containing W/O emulsion and a solid content by mass Xtra (%) at the phase inversion point from W/O emulsion to O/W emulsion satisfy a relation of X W/O - Xtra > 3%. |
申请公布号 |
EP2752467(B1) |
申请公布日期 |
2016.07.13 |
申请号 |
EP20130755158 |
申请日期 |
2013.02.27 |
申请人 |
NIPPON PAINT AUTOMOTIVE COATINGS CO., LTD. |
发明人 |
NAKAZAWA, NORIYUKI;HARADA, MASAHIKO;ABE, YOTARO |
分类号 |
C09D5/44;C09D5/02;C09D163/00;C09D175/04 |
主分类号 |
C09D5/44 |
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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