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1. (WO2018100805) RESIN-COATED METAL PIGMENT

Pub. No.:    WO/2018/100805    International Application No.:    PCT/JP2017/028725
Publication Date: Fri Jun 08 01:59:59 CEST 2018 International Filing Date: Wed Aug 09 01:59:59 CEST 2017
IPC: C09C 1/62
C09C 3/10
C09D 7/12
C09D 11/00
C09D 201/00
Applicants: DIC CORPORATION
DIC株式会社
Inventors: NAKAZAWA Daisuke
仲澤 大助
SUGIYAMA Kazuhiro
杉山 和弘
OTSUBO Takuya
大坪 拓哉
KOSAKA Norio
小坂 典生
Title: RESIN-COATED METAL PIGMENT
Abstract:
In a conventional process for treating an aluminium pigment with an acidic monomer, the outermost surface of the pigment is corroded and resultantly smoothness becomes poor or formation of a polymer coating film having an even thickness becomes impossible, hence glossiness and brightness of the pigment are deteriorated due to scattering of incident light. Furthermore, chemical resistance becomes deteriorated due to the presence of portions (pinholes) not covered by a polymer. The inventor of the present invention has found that a resin-coated metal pigment, which is coated with a polymer comprising an aldehyde group-containing monomer, can have an excellent surface smoothness and resultantly have a uniform resin coating, and thereby shows bright and shiny appearance. Thus, the resin-coated metal pigment according to the present invention has been completed.