公开(公告)号：EP3467056A1

公开(公告)日：2019-04-10

申请号：EP17806645.2

申请日：2017-05-30

申请人： Nippon Paint Automotive Coatings Co., Ltd.

发明人： MIYAMAE, Nobuhiro ,  OHTA, Tatsuo ,  INBE, Toshio

IPC分类号： C09D163/00 ,  C09D5/44 ,  C09D7/12 ,  C25D13/10 ,  C25D15/00

摘要： The present invention addresses the problem of providing a cationic electrodeposition coating composition superior in rust prevention property. The present invention provides a cationic electrodeposition coating composition containing an amine-modified epoxy resin (A), a curing agent (B), a Group-3 element compound (C), and a cationic or nonionic resin (D), wherein the amine-modified epoxy resin (A) has a number-average molecular weight within a range of 1,000 to 5,000, and the cationic or nonionic resin (D) has a number-average molecular weight of 10,000 or more.

公开(公告)号：EP3354701A1

公开(公告)日：2018-08-01

申请号：EP16848689.2

申请日：2016-09-23

申请人： Nippon Paint Automotive Coatings Co., Ltd.

发明人： MIYAMAE, Nobuhiro ,  OHTA, Tatsuo

IPC分类号： C09D201/02 ,  C09C1/00 ,  C09C3/10 ,  C09D5/02 ,  C09D5/44 ,  C09D7/12 ,  C09D175/04

CPC分类号： C09C1/00 ,  C09C3/10 ,  C09D5/02 ,  C09D5/44 ,  C09D7/40 ,  C09D175/04 ,  C09D201/02

摘要： The present invention addresses the problem of providing a method for preparing a cationic electrodeposition coating composition that has excellent anti-rust performance in an edge section.
The present invention provides a method for preparing a cationic electrodeposition coating composition that includes a step in which a resin emulsion (i) and a pigment dispersion paste are mixed. The resin emulsion (i) contains an aminated resin (A) and a block isocyanate curing agent (B). The pigment dispersion paste contains a metal compound (C), a pigment dispersion resin (D), and a pigment (E). The metal compound (C) is at least one of a metal oxide and a metal hydroxide containing at least one substance selected from the group consisting of La, Nd, Y, Pr, Yb, and Ce as a metal element.
The pigment dispersion paste is prepared by a step in which the metal compound (C) and the pigment dispersion resin (D) are mixed and the mixture obtained thereby is mixed with the pigment dispersion resin (D) and the pigment (E).