公开(公告)号：US20210002437A1

公开(公告)日：2021-01-07

申请号：US17023904

申请日：2020-09-17

Applicant: KANEKA CORPORATION

Inventor： Haruki Koyama ,  Hanako Hasebe ,  Katsumi Yamaguchi ,  Yukihiro Shimamoto

IPC: C08J5/18 ,  C08L51/04 ,  B32B27/08 ,  C08F265/06 ,  B32B27/30 ,  C08J7/046 ,  C08F285/00

Abstract: An acrylic resin film is provided that may include graft copolymer particles (A) with a multilayer structure and graft copolymer particles (B) with a multilayer structure, wherein the graft copolymer particles (A) may have an average particle size in the range of 20 to 150 nm, the graft copolymer particles (B) may have a larger average particle size than the graft copolymer particles (A). The graft copolymer particles (A) may include a cross-linked elastomer (A1) and a graft polymer layer (A2), the graft polymer layer (A2) being closer to a surface layer than the cross-linked elastomer (A1). Further, a constituent unit may be derived from an acrylate with an alkyl ester moiety having two or more carbon atoms constitutes 8% or less by mass of the graft polymer layer (A2), the graft copolymer particles (B) may contain a cross-linked elastomer (B1).

公开(公告)号：US10578773B2

公开(公告)日：2020-03-03

申请号：US15100163

申请日：2014-11-27

Applicant: KANEKA CORPORATION

Inventor： Fuminobu Kitayama ,  Haruki Koyama

IPC: G02B1/04 ,  C08J5/18 ,  C08F265/06 ,  C08L101/00

Abstract: Disclosed herein are an optical resin composition whose orientation birefringence and photoelastic birefringence are both very low and which has high transparency and which provides a film having few surface defects and excellent mechanical strength, and a film comprising the optical resin composition. Also disclosed herein is a film that has optical isotropy and excellent transparency even after stretching.The optical resin composition contains a thermoplastic resin and a multistep-polymerized graft copolymer obtained by polymerizing, in the presence of crosslinked polymer-containing particles formed by polymerizing a monomer mixture containing a monomer represented by the following formula (4) and a polyfunctional monomer, a monomer mixture containing a monomer represented by the following formula (4) and another monofunctional monomer copolymerizable therewith.

公开(公告)号：US20150247013A1

公开(公告)日：2015-09-03

申请号：US14427586

申请日：2013-09-11

Applicant: KANEKA CORPORATION

Inventor： Haruki Koyama ,  Hirotsugu Yamada ,  Fuminobu Kitayama ,  Katsumi Yamaguchi

IPC: C08J5/18 ,  B32B27/30 ,  B32B27/20

CPC classification number: C08J5/18 ,  B29C39/10 ,  B32B27/20 ,  B32B27/308 ,  B32B2551/00 ,  C08F265/06 ,  C08F285/00 ,  C08J7/047 ,  C08J2333/10 ,  C08J2333/24 ,  C08J2351/04 ,  C08J2421/00 ,  C08L51/04 ,  C08L2205/02 ,  C09D151/003 ,  G02B1/14 ,  Y10T428/254 ,  C08F2220/1825 ,  C08F220/14 ,  C08F212/08 ,  C08F220/40 ,  C08F220/18

Abstract: Disclosed herein is a film that exhibits well-balanced physical properties such as high surface hardness, excellent transparency, excellent cracking resistance, and excellent anti-whitening on bending when laminated on a plastic molded body, and is therefore suitable for decorative molding applications. The film is an acrylic resin film obtained by forming, into a film, an acrylic resin composition containing an acrylic resin and a rubber-containing graft copolymer, the rubber-containing graft copolymer being obtained by polymerizing monomer components (B-1) to (B-4) in order so that rubber particles obtained by polymerizing (B-1) to (B-3) have an average particle size of 0.2 to 0.4 μm. The monomer component (B-1) comprises 40 to 100 wt % of an acrylate, 60 to 0 wt % of a monofunctional monomer copolymerizable therewith, and 0.05 to 10 parts by weight of a polyfunctional monomer. The monomer component (B-2) comprises 50 to 100 wt % of a methacrylate, 50 to 0 wt % of a monofunctional monomer copolymerizable therewith, and 0.05 to 10 parts by weight of a polyfunctional monomer. The monomer component (B-3) comprises 50 to 100 wt % of an acrylate, 50 to 0 wt % of a monofunctional monomer copolymerizable therewith, and 0.05 to 10 parts by weight of a polyfunctional monomer. The monomer component (B-4) comprises 40 to 100 wt % of a methacrylate and 60 to 0 wt % of a monofunctional monomer copolymerizable therewith.

Abstract translation: 本文公开了当层压在塑料成型体上时，表现出高的表面硬度，优异的透明性，优异的抗开裂性和优异的弯曲抗白化性能的物理性能良好的膜，因此适用于装饰成型应用。 该薄膜是通过将包含丙烯酸树脂和含橡胶的接枝共聚物的丙烯酸树脂组合物形成膜而获得的丙烯酸树脂膜，该含橡胶的接枝共聚物通过将单体成分（B-1）〜（ B-4），使得通过聚合（B-1）至（B-3）获得的橡胶颗粒的平均粒径为0.2〜0.4μm。 单体成分（B-1）含有40〜100重量％的丙烯酸酯，60〜0重量％的可与其共聚的单官能单体，0.05〜10重量份的多官能单体。 单体组分（B-2）包含50至100重量％的甲基丙烯酸酯，50至0重量％的可共聚的单官能单体和0.05至10重量份的多官能单体。 单体成分（B-3）含有50〜100重量％的丙烯酸酯，50〜0重量％的可共聚的单官能单体和0.05〜10重量份的多官能单体。 单体组分（B-4）包含40至100重量％的甲基丙烯酸酯和60至0重量％的可与其共聚的单官能单体。