公开(公告)号：US20180265730A1

公开(公告)日：2018-09-20

申请号：US15765099

申请日：2016-09-08

Applicant: KANSAI PAINT CO. LTD.

Inventor： Kazuya WATANABE ,  Akinori NAGAI

IPC: C09D133/10 ,  C09D7/62

CPC classification number: C09D133/10 ,  B05D7/24 ,  C08K3/36 ,  C08L75/04 ,  C09D7/62 ,  C09D201/06

Abstract: There is provided a coating composition with excellent storage stability, and with excellent mar resistance for obtained coating films. The coating composition comprises a hydroxyl group-containing resin (A), a curing agent (B) and a dispersion of acrylic resin-coated silica particles (C), the dispersion of acrylic resin-coated silica particles (C) being an acrylic resin-coated silica particle dispersion obtained by reacting silica particles with a polymerizable unsaturated group (c1) and a polymerizable unsaturated monomer (c2) in a mass ratio of (c1):(c2)=20:80 to 90:10, the polymerizable unsaturated monomer (c2) including a specific polymerizable unsaturated monomer (c2-1) as at least a portion of its components, and the molecular weight of the resin covering the silica particles being 400 to 6000.

公开(公告)号：US20180265717A1

公开(公告)日：2018-09-20

申请号：US15762873

申请日：2016-09-08

Applicant: KANSAI PAINT CO., LTD.

Inventor： Kazuya WATANABE ,  Akinori NAGAI

IPC: C09D7/62 ,  C09D133/14 ,  C09C1/30 ,  C01B33/145 ,  B05D1/36

CPC classification number: C09D7/62 ,  B05D1/36 ,  C01B33/145 ,  C01P2004/64 ,  C08F2/44 ,  C09C1/30 ,  C09C1/3072 ,  C09C3/10 ,  C09C3/12 ,  C09D7/40 ,  C09D133/00 ,  C09D133/14 ,  C09D201/06

Abstract: Production of an acrylic resin-coated silica particle dispersion that has excellent storage stability, when added to a coating material produces a coating film with excellent mar resistance: mixing and heating silica particles (A), an organic solvent (B) and a monomer having a polymerizable unsaturated group and a hydrolyzable silyl group (C) to obtain a polymerizable unsaturated group-containing silica particle dispersion (i), adding a tertiary amine (D) with a molecular weight of 120 to 380 and having a terminal alkyl and/or aryl group, to the component (i) dispersion, to obtain a polymerizable unsaturated group-containing silica particle dispersion (ii), reacting the component (ii) dispersion with a polymerizable unsaturated monomer (E), in a solid mass ratio of (ii):(E)=20:80 to 90:10, to obtain an acrylic resin-coated silica particle dispersion.