公开(公告)号：US20220348783A1

公开(公告)日：2022-11-03

申请号：US17760921

申请日：2020-08-26

Applicant: TOYOBO CO., LTD.

Inventor： Hokuto YAMASAKI ,  Kenji KASHIHARA

IPC: C09D123/30 ,  C09D7/20 ,  C09D7/65 ,  C09D5/00

Abstract: The present invention provides a paint formulation that has good storage stability and weather resistance, and that is capable of forming a paint film having excellent water resistance, chemical resistance such as gasohol resistance and fuel resistance, and adhesion. The paint formulation comprises an acid-modified polyolefin (A) and a tackifier (B), and satisfies the following (a) and (b): (a) the acid-modified polyolefin (A) has crystallinity; and (b) the tackifier (B) has a double-bond equivalent of 40 or more, as defined by the formula: double-bond equivalent=weight average molecular weight/number of double bonds in a molecule, or contains no double bond.

公开(公告)号：US20190382611A1

公开(公告)日：2019-12-19

申请号：US16479264

申请日：2018-01-15

Applicant: TOYOBO CO., LTD.

Inventor： Hokuto YAMASAKI ,  Kenji KASHIHARA

IPC: C09D123/26 ,  C09D145/02 ,  C09D5/00

Abstract: The present invention provides a coating composition that has excellent storage stability and that is capable of forming a coating film having excellent water resistance, chemical resistance such as gasohol resistance and fuel resistance, and adhesion. The coating composition comprises an acid-modified polyolefin (A), a coumarone-indene resin (B), and a hydrocarbon-based solvent (C), wherein the coumarone-indene resin (B) is contained in an amount of 25 to 400 parts by mass, per 100 parts by mass of the acid-modified polyolefin (A). The coating composition further comprises at least one of an ester-based solvent or ketone-based solvent (D).

公开(公告)号：US20230312968A1

公开(公告)日：2023-10-05

申请号：US18025040

申请日：2021-09-03

Applicant: TOYOBO CO., LTD.

Inventor： Hokuto YAMASAKI ,  Kenji KASHIHARA

IPC: C09D123/26 ,  C09D7/20 ,  C09D5/00

CPC classification number: C09D123/26 ,  C09D7/20 ,  C09D5/002

Abstract: This invention provides a paint formulation that is used as a primer of a polypropylene substrate for automotive exterior parts etc., that has better chemical resistance and high-pressure car washing resistance than in the past, and that has good storage stability of the paint. Specifically, provided is a paint formulation comprising a modified polyolefin (A) having a glass transition temperature of −30° C. or more and a (meth)acrylic resin (B) having a glass transition temperature of 0° C. or more, and having a hydroxy value of 5 to 100 mgKOH/g and an acid value of 0 to 30 mgKOH/g, wherein a (meth)acrylic acid ester monomer constituting the (meth)acrylic resin (B) comprises at least one member selected from methyl (meth)acrylate, ethyl (meth)acrylate, cyclohexyl (meth)acrylate, 2-ethylhexyl (meth)acrylate, and an OH group-containing (meth)acrylate.