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：US20230295362A1

公开(公告)日：2023-09-21

申请号：US18202707

申请日：2023-05-26

Applicant: KANEKA CORPORATION

Inventor： Tomoki Hiiro ,  Riru Nishikawa ,  Keita Hirai ,  Keisuke Hatano

IPC: C08F222/40 ,  C08F220/14 ,  C08F212/08 ,  C08F8/32 ,  C08K5/19 ,  C08J5/18

CPC classification number: C08F222/40 ,  C08F220/14 ,  C08F212/08 ,  C08F8/32 ,  C08K5/19 ,  C08J5/18 ,  C08J2379/08

Abstract: A glutarimide resin contains repeating units represented by formula (1), formula (2), formula (3) and formula (4). R1 and R2 are each independently hydrogen or an alkyl group having 1 to 8 carbon atoms, and R3 and R4 are each independently hydrogen or an alkyl group having 1 to 8 carbon atoms. R5 and R6 are each independently hydrogen or an alkyl group having 1 to 8 carbon atoms, and R7 is an alkyl group having 1 to 18 carbon atoms, a cycloalkyl group having 3 to 12 carbon atoms, or a substituent containing an aromatic ring having 5 to 15 carbon atoms. R8 is hydrogen or an alkyl group having 1 to 8 carbon atoms, and R9 is an aryl group having 6 to 10 carbon atoms.

公开(公告)号：US20230295358A1

公开(公告)日：2023-09-21

申请号：US18324447

申请日：2023-05-26

Applicant: KANEKA CORPORATION

Inventor： Tomoki Hiiro ,  Riru Nishikawa ,  Keita Hirai ,  Keisuke Hatano

IPC: C08F220/14 ,  G02B1/08

CPC classification number: C08F220/14 ,  G02B1/08

Abstract: A glutarimide resin contains repeating units of formula (1), wherein R1 and R2 are each independently hydrogen or an alkyl group having 1 to 8 carbon atoms; repeating units of formula (2), wherein R3 and R4 are each independently hydrogen or an alkyl group having 1 to 8 carbon atoms, and repeating units of formula (3), wherein R5 and R6 are each independently hydrogen or an alkyl group having 1 to 8 carbon atoms, and R7 is an alkyl group having 1 to 18 carbon atoms, a cycloalkyl group having 3 to 12 carbon atoms, or a substituent containing an aromatic ring having 5 to 15 carbon atoms. The glutarimide resin satisfies the following inequality: 3≤M1+M2≤20. M1 is the content (mol %) of the repeating units of the formula (1) and M2 is the content (mol %) of the repeating units of the formula (2).

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%.