公开(公告)号：US20220363940A1

公开(公告)日：2022-11-17

申请号：US17745173

申请日：2022-05-16

Applicant: NITTO DENKO CORPORATION

Inventor： Takeshi IGARASHI ,  Eiichi IMOTO ,  Chihiro YOSHIDA ,  Koki HASHIMOTO

IPC: C09D133/20 ,  C09D5/20 ,  C09D7/61

Abstract: Provided is a paint-protective coating material formed from an acrylic coating composition comprising an acrylic polymer as base polymer. The acrylic polymer-forming monomers includes a monomer (mT) having a homopolymer Tg of 90° C. or higher and a monomer (mL) having a homopolymer Tg of −30° C. or lower. The monomer (mT) includes at least acrylonitrile. In the monomers, the monomers (mT) and (mL) have a molar ratio (mT/mL) of 0.8 or higher and 1.5 or lower. The paint-protective coating material has storage moduli of 150 MPa or higher and 1000 MPa or lower at 23° C., and 0.40 MPa or higher at 70° C.

公开(公告)号：US20240392051A1

公开(公告)日：2024-11-28

申请号：US18560987

申请日：2022-05-13

Applicant: NITTO DENKO CORPORATION

Inventor： Takeshi IGARASHI ,  Koki HASHIMOTO ,  Eiichi IMOTO ,  Chihiro YOSHIDA

IPC: C08F220/18 ,  B05C5/02 ,  C08F218/08 ,  C09D5/00 ,  C09D5/02 ,  C09D131/04 ,  C09D133/08

Abstract: Provided is a paint-protective coating material formed from a liquid coating composition. The coating composition comprises, as its base polymer, a polymer (A) that is a polymerization product of monomers comprising an acrylic monomer. The polymer (A) has an SP value of 9.8 (cal/cm3)1/2 or greater and a glass transition temperature of 0° C. or lower, calculated based on the composition of the monomers forming the polymer (A).

公开(公告)号：US20240263033A1

公开(公告)日：2024-08-08

申请号：US18561059

申请日：2022-05-13

Applicant: NITTO DENKO CORPORATION

Inventor： Takeshi IGARASHI ,  Koki HASHIMOTO ,  Eiichi IMOTO ,  Chihiro YOSHIDA

IPC: C09D133/06 ,  C08F218/08 ,  C08F220/18 ,  C09D5/02

CPC classification number: C09D133/064 ,  C08F218/08 ,  C08F220/1804 ,  C09D5/022 ,  C09D133/062 ,  C08F2800/10

Abstract: Provided is a paint-protective coating material formed from a liquid coating composition. The coating composition comprises, as its base polymer, a polymer (A) that is a polymerization product of monomers comprising an acrylic monomer. The paint-protective coating material has a storage modulus at 70° C. of 0.40 MPa or higher and 1.30 or lower, a storage modulus at 23° C. of 250 MPa or higher and 800 MPa or lower, and a storage modulus at −30° C. of 2300 MPa or less.