| 发明名称 |
METHOD FOR PREPARING EMULSION RESIN COMPOSITION FOR CATIONIC ELECTRODEPOSITION PAINT |
| 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, anda solid concentration by mass XW/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 XW/O−Xtra>3%. |
| 申请公布号 |
US2014235756(A1) |
申请公布日期 |
2014.08.21 |
| 申请号 |
US201314345674 |
申请日期 |
2013.02.27 |
| 申请人 |
NIPPON PAINT CO., LTD. |
发明人 |
Nakazawa Noriyuki;Harada Masahiko;Abe Yotaro |
| 分类号 |
C08L63/00 |
主分类号 |
C08L63/00 |
| 代理机构 |
|
代理人 |
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| 主权项 |
1. 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 XW/O (%) of the curing agent-containing W/O emulsion and a solid concentration by mass Xtra (%) at the phase inversion point from W/O emulsion to O/W emulsion satisfy a relation of XW/O−Xtra>3%. |
| 地址 |
Osaka JP |
