公开(公告)号：US10933614B2

公开(公告)日：2021-03-02

申请号：US16148631

申请日：2018-10-01

Applicant: KANEKA CORPORATION

Inventor： Fuminobu Kitayama ,  Haruki Koyama ,  Hiroki Sawada ,  Nagayoshi Adachi

IPC: B32B27/30 ,  C08F265/06 ,  C08F8/48 ,  C08F220/14 ,  C08L51/00 ,  C08L33/04 ,  C08L33/24 ,  C08L33/12 ,  B32B7/022 ,  C08J5/18 ,  C08F8/30 ,  C08F220/18

Abstract: An acrylic resin composition includes an acrylic resin and a graft copolymer. The graft copolymer includes an inner layer and an outer layer. The inner layer is a soft polymer (B) having, as structural units, a monomer mixture (b) containing 40 to 99 wt % of an alkyl acrylate ester, 1 to 60 wt % of benzyl (meth)acrylate, and 0 to 40 wt % of another monomer and 0.1 to 5 parts by weight of a polyfunctional monomer; and the outer layer is a hard polymer (C) having, as structural units, a monomer mixture (c) containing 60 to 100 wt % of an alkyl methacrylate ester, 0 to 10 wt % of benzyl (meth)acrylate, and 40 to 0 w % of another monomer and 0 to 10 parts by weight of a polyfunctional monomer.

公开(公告)号：US10479886B2

公开(公告)日：2019-11-19

申请号：US15393842

申请日：2016-12-29

Applicant: Kaneka Corporation

Inventor： Fuminobu Kitayama ,  Haruki Koyama ,  Tomoki Hiiro

IPC: C08L33/00 ,  C08F265/06 ,  C08L51/00 ,  G02B5/30 ,  G02B1/14 ,  C08J5/18 ,  G02B1/04

Abstract: An optical resin composition from which a film with improved adhesion to a polyvinyl alcohol-based film and improved flex resistance can be obtained while keeping high film transparency. The optical resin composition includes: 99 to 50% by weight of an acrylic resin having a glass transition temperature of not lower than 110° C.; and 1 to 50% by weight of a particulate (meth)acrylic multilayer structure graft copolymer containing: an innermost layer made of a polymer containing a methacrylic acid ester as a first monomer; a middle layer made of a polymer containing, as a second monomer, an acrylic acid alkyl ester having an alkyl group with 4 to 12 carbon atoms; and an outermost layer made of a polymer containing a methacrylic acid ester as a third monomer. A graft ratio of the (meth)acrylic multilayer structure graft copolymer is not less than 110%.

公开(公告)号：US20170362368A1

公开(公告)日：2017-12-21

申请号：US15694154

申请日：2017-09-01

Applicant: Kaneka Corporation

Inventor： Fuminobu Kitayama ,  Nobuyoshi Maizuru ,  Mitsuru Nakamura ,  Haruki Koyama

IPC: C08F265/06 ,  C08L33/08

CPC classification number: C08F265/06 ,  C08F2/38 ,  C08F285/00 ,  C08L33/08 ,  C08L51/003 ,  C08L2201/10 ,  C08L2203/16 ,  C09D151/003 ,  C08F220/14 ,  C08F2220/1825 ,  C08F212/08 ,  C08F220/54 ,  C08F222/40 ,  C09D133/12 ,  C08L51/00 ,  C08L33/12

Abstract: A resin composition includes an acrylic resin and a graft copolymer having a gel content of 65% to 84%, wherein the graft copolymer is a multistage-polymerized graft copolymer obtained by a multistage polymerization including the polymerization stages (I) to (III). In the polymerization stage (I), a first monomer mixture and a polyfunctional monomer are polymerized in a presence of a primary alkyl mercaptan-based chain transfer agent and/or a secondary alkyl mercaptan-based chain transfer agent to obtain a first hard polymer. In the polymerization stage (II), a second monomer mixture and a polyfunctional monomer are poloymerized to obtain a soft polymer. In the polymerization stage (III), a third monomer mixture and a polyfunctional monomer are polymerized to obtain a second hard polymer.

公开(公告)号：US11760855B2

公开(公告)日：2023-09-19

申请号：US17023904

申请日：2020-09-17

Applicant: KANEKA CORPORATION

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

IPC: C08J7/048 ,  C08J7/046 ,  B32B27/08 ,  B32B27/30 ,  C08F265/06 ,  C08F285/00 ,  C08J5/18 ,  C08L51/04 ,  C08J7/043 ,  C08J7/044

CPC classification number: C08J7/048 ,  B32B27/08 ,  B32B27/308 ,  C08F265/06 ,  C08F285/00 ,  C08J5/18 ,  C08J7/043 ,  C08J7/044 ,  C08J7/046 ,  C08L51/04 ,  B32B2255/10 ,  B32B2255/26 ,  B32B2264/025 ,  B32B2305/72 ,  B32B2307/418 ,  B32B2307/536 ,  B32B2457/20 ,  B32B2605/003 ,  C08J2351/04 ,  C08J2483/04 ,  C08L2207/53

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：US09803078B2

公开(公告)日：2017-10-31

申请号：US15100183

申请日：2014-11-27

Applicant: KANEKA CORPORATION

Inventor： Fuminobu Kitayama ,  Haruki Koyama

IPC: C08L33/24 ,  C08J5/18 ,  C08L35/02 ,  C08L33/26

CPC classification number: C08L33/24 ,  C08J5/18 ,  C08J2333/24 ,  C08J2333/26 ,  C08J2335/02 ,  C08J2433/12 ,  C08J2433/26 ,  C08J2435/02 ,  C08J2451/00 ,  C08L33/26 ,  C08L35/02 ,  C08L2201/10 ,  C08L2205/03

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, high heat stability, high solvent resistance, and excellent surface appearance, and a film comprising the optical resin composition.The optical resin composition comprises: a resin (A) having a maleimide unit represented by the formula (5) and a (meth)acrylic ester unit; and a glutarimide acrylic resin (B). The resin composition may further comprise multi-layered particles.

公开(公告)号：US10392463B2

公开(公告)日：2019-08-27

申请号：US15694154

申请日：2017-09-01

Applicant: Kaneka Corporation

Inventor： Fuminobu Kitayama ,  Nobuyoshi Maizuru ,  Mitsuru Nakamura ,  Haruki Koyama

IPC: C08F265/06 ,  C08L51/00 ,  C08L33/08 ,  C08F2/38

Abstract: A resin composition includes an acrylic resin and a graft copolymer having a gel content of 65% to 84%, wherein the graft copolymer is a multistage-polymerized graft copolymer obtained by a multistage polymerization including the polymerization stages (I) to (III). In the polymerization stage (I), a first monomer mixture and a polyfunctional monomer are polymerized in a presence of a primary alkyl mercaptan-based chain transfer agent and/or a secondary alkyl mercaptan-based chain transfer agent to obtain a first hard polymer. In the polymerization stage (II), a second monomer mixture and a polyfunctional monomer are polymerized to obtain a soft polymer. In the polymerization stage (III), a third monomer mixture and a polyfunctional monomer are polymerized to obtain a second hard polymer.

公开(公告)号：US20190031845A1

公开(公告)日：2019-01-31

申请号：US16148631

申请日：2018-10-01

Applicant: KANEKA CORPORATION

Inventor： Fuminobu Kitayama ,  Haruki Koyama ,  Hiroki Ueda ,  Nagayoshi Adachi

IPC: C08J5/18 ,  C08F8/30 ,  C08F265/06

Abstract: An acrylic resin composition includes an acrylic resin and a graft copolymer. The graft copolymer includes an inner layer and an outer layer. The inner layer is a soft polymer (B) having, as structural units, a monomer mixture (b) containing 40 to 99 wt % of an alkyl acrylate ester, 1 to 60 wt % of benzyl (meth)acrylate, and 0 to 40 wt % of another monomer and 0.1 to 5 parts by weight of a polyfunctional monomer; and the outer layer is a hard polymer (C) having, as structural units, a monomer mixture (c) containing 60 to 100 wt % of an alkyl methacrylate ester, 0 to 10 wt % of benzyl (meth)acrylate, and 40 to 0 w % of another monomer and 0 to 10 parts by weight of a polyfunctional monomer.

公开(公告)号：US20170107369A1

公开(公告)日：2017-04-20

申请号：US15393842

申请日：2016-12-29

Applicant: Kaneka Corporation

Inventor： Fuminobu Kitayama ,  Haruki Koyama ,  Tomoki Hiiro

IPC: C08L33/00 ,  G02B5/30 ,  G02B1/04 ,  G02B1/14 ,  C08J5/18 ,  C08F265/06

Abstract: An optical resin composition from which a film with improved adhesion to a polyvinyl alcohol-based film and improved flex resistance can be obtained while keeping high film transparency. The optical resin composition includes: 99 to 50% by weight of an acrylic resin having a glass transition temperature of not lower than 110° C.; and 1 to 50% by weight of a particulate (meth)acrylic multilayer structure graft copolymer containing: an innermost layer made of a polymer containing a methacrylic acid ester as a first monomer; a middle layer made of a polymer containing, as a second monomer, an acrylic acid alkyl ester having an alkyl group with 4 to 12 carbon atoms; and an outermost layer made of a polymer containing a methacrylic acid ester as a third monomer. A graft ratio of the (meth)acrylic multilayer structure graft copolymer is not less than 110%.

公开(公告)号：US20230416556A1

公开(公告)日：2023-12-28

申请号：US18241465

申请日：2023-09-01

Applicant: KANEKA CORPORATION

Inventor： Hanako Hasebe ,  Haruki Koyama ,  Yukihiro Shimamoto

IPC: C09D133/18 ,  B05D1/00 ,  C08K3/36

CPC classification number: C09D133/18 ,  B05D1/00 ,  B05D2502/00 ,  B05D2201/04 ,  C08K3/36

Abstract: A laminate having excellent moldability and including an acrylic-based resin film is provided. A method for producing a laminate having a specific crack elongation, includes a step (A) of forming, on at least one side of a specific acrylic-based resin film, a hard coat layer that contains a urethane acrylate resin, and a step (B) of forming, on the hard coat layer obtained in the step (A), a low refractive index layer that contains, in an amount of not less than 40%, hollow fine silica particles having a particle size of less than 100 nm and that contains an acrylate-based resin.

公开(公告)号：US20230340218A1

公开(公告)日：2023-10-26

申请号：US18340504

申请日：2023-06-23

Applicant: KANEKA CORPORATION

Inventor： Haruki Koyama ,  Hanako Hasebe ,  Yukihiro Shimamoto

IPC: C08J7/046 ,  C08J7/04

CPC classification number: C08J7/046 ,  C08J7/0427 ,  C08J2333/04 ,  C08J2375/14

Abstract: Provided is a laminate that has excellent moldability and excellent wear resistance, and that contains an acrylic-based resin film. Excellent mouldability and wear resistance can be attained by providing a laminate including a specific acrylic-based resin film, and a specific ultraviolet-curable hard coat layer that is laminated on at least one side of the acrylic-based resin film. The laminate has a specific crack elongation and exhibits a Δhaze of not more than 1.0% in a steel wool wear test at 50 g/cm2 and 5 reciprocating motions.