公开(公告)号：US20240002566A1

公开(公告)日：2024-01-04

申请号：US18368766

申请日：2023-09-15

Applicant: KANEKA CORPORATION

Inventor： Toshiaki Ezaki ,  Kazunori Saegusa ,  Keisuke Hatano ,  Keita Hirai ,  Riru Nishikawa

IPC: C08F220/14

CPC classification number: C08F220/14 ,  C08F2800/10 ,  C08F2810/00 ,  B29C71/02

Abstract: An optical member and a method for producing this optical member are provided. The optical member is composed of an injection molded article. The injection molded article includes a glutarimide resin that contains a glutarimide unit having an imidocarbonyl group provided by the imidization of a carbonyl group deriving from (meth)acrylate ester monomer, a repeat unit deriving from (meth)acrylate ester monomer, and a repeat unit deriving from aromatic vinyl monomer. The glutarimide resin has an orientation birefringence of −0.5×10−3 to 0.5×10−3, a photoelastic constant of −3.0×10−12 Pa−1 to 3.0×10−12 Pa−1, and a glass transition temperature of at least 125° C. The average value of the phase difference of the optical member is not more than 20 nm.

公开(公告)号：US10174191B2

公开(公告)日：2019-01-08

申请号：US15038310

申请日：2014-11-21

Applicant: KANEKA CORPORATION

Inventor： Fuminobu Kitayama ,  Keisuke Hatano

IPC: C08L33/14 ,  C08F265/06 ,  C08J5/18 ,  C08F8/48 ,  C08L25/04 ,  C08L101/00 ,  C08L51/00

Abstract: The present invention provides a resin material and a film made of the resin material, the resin material being able to form a molded body having high transparency, excellent mechanical strength, few foreign matter defects, excellent heat stability, excellent solvent resistance, and extremely good appearance. The resin material contains a thermoplastic resin (A) and a polymer (B) satisfying the following conditions. That is, the polymer (B) is a graft copolymer obtained by multistep polymerization, and at least one step of the multistep polymerization is polymerization of a monomer mixture containing: a (meth)acrylic monomer having a ring structure; and (meth)acrylic acid and/or its salt.

公开(公告)号：US20150147550A1

公开(公告)日：2015-05-28

申请号：US14406086

申请日：2013-06-26

Applicant: KANEKA CORPORATION

Inventor： Fuminobu Kitayama ,  Nobuyoshi Maizuru ,  Keisuke Hatano

IPC: C08J5/18

CPC classification number: C08J5/18 ,  C08F8/00 ,  C08F8/32 ,  C08F2810/20 ,  C08J2333/12 ,  C08J2351/00 ,  C08J2433/12 ,  C08J2451/00 ,  C08L33/06 ,  C08L33/08 ,  C08L33/12 ,  C08L33/24 ,  G02B1/04 ,  G02B1/041 ,  G02B1/045 ,  G02B6/0011 ,  G02B6/003 ,  Y10T428/25 ,  Y10T428/254 ,  C08F220/10 ,  C08L33/064 ,  C08L101/00 ,  C08L51/08 ,  C08L51/06

Abstract: Disclosed herein is a non-birefringent resin material that is very small in both orientation birefringence and photoelastic birefringence, has high transparency, and is capable of providing a molded article having few foreign matter defects and a film made of such a material. The non-birefringent resin material contains a resin (A) and a polymer (B) and has an orientation birefringence of −1.7×10−4 to 1.7×10−4 and a photoelastic constant of −4×10−12 to 4×10−12 Pa−1.

Abstract translation: 本文公开了非取向双折射树脂材料，其在取向双折射和光弹性双折射方面非常小，具有高透明度，并且能够提供少量异物缺陷的模制品和由这种材料制成的膜。 非双折射树脂材料含有树脂（A）和聚合物（B），其取向双折射为-1.7×10-4〜1.7×10-4，光弹性常数为-4×10-12〜4× 10-12 Pa-1。

公开(公告)号：US10597525B2

公开(公告)日：2020-03-24

申请号：US14782222

申请日：2013-06-26

Applicant: KANEKA CORPORATION

Inventor： Fuminobu Kitayama ,  Nobuyoshi Maizuru ,  Keisuke Hatano

IPC: C08L33/12 ,  C08F265/06 ,  C08L51/04 ,  C08L51/06 ,  G02B1/04 ,  C08J5/18 ,  C08L33/08

Abstract: An object of the present invention is to provide a resin material capable of producing a molded body having few defects due to foreign substances, having high mechanical strength, very small in both orientation birefringence and photoelastic birefringence, and having high transparency, and having high transparency even when such a resin material is stretched. Provided is a resin composition containing a resin (A) and a multilayer structure polymer (B), wherein the multilayer structure polymer (B) has a crosslinked polymer layer and a hard polymer layer, and the hard polymer layer has at least two different hard polymer layers, at least one of which is a hard polymer layer (C) opposite in sign of a photoelastic constant to that of the resin (A).

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：US10035888B2

公开(公告)日：2018-07-31

申请号：US14406086

申请日：2013-06-26

Applicant: KANEKA CORPORATION

Inventor： Fuminobu Kitayama ,  Nobuyoshi Maizuru ,  Keisuke Hatano

IPC: C08J5/18 ,  G02B1/04 ,  C08L33/12 ,  C08L33/06 ,  C08L33/08 ,  C08L33/24 ,  C08F8/00 ,  C08F8/32 ,  F21V8/00

CPC classification number: C08J5/18 ,  C08F8/00 ,  C08F8/32 ,  C08F2810/20 ,  C08J2333/12 ,  C08J2351/00 ,  C08J2433/12 ,  C08J2451/00 ,  C08L33/06 ,  C08L33/08 ,  C08L33/12 ,  C08L33/24 ,  G02B1/04 ,  G02B1/041 ,  G02B1/045 ,  G02B6/0011 ,  G02B6/003 ,  Y10T428/25 ,  Y10T428/254 ,  C08F220/10 ,  C08L33/064 ,  C08L101/00 ,  C08L51/08 ,  C08L51/06

Abstract: Disclosed herein is a non-birefringent resin material that is very small in both orientation birefringence and photoelastic birefringence, has high transparency, and is capable of providing a molded article having few foreign matter defects and a film made of such a material. The non-birefringent resin material contains a resin (A) and a polymer (B) and has an orientation birefringence of −1.7×10−4 to 1.7×10−4 and a photoelastic constant of −4×10−12 to 4×10−12 Pa−1.

公开(公告)号：US20160325477A1

公开(公告)日：2016-11-10

申请号：US15108136

申请日：2014-12-22

Applicant: KANEKA CORPORATION

Inventor： Keisuke Hatano ,  Yutaka Fujiwara

IPC: B29C47/14 ,  B29D11/00 ,  C08J5/18 ,  B29C47/00

CPC classification number: B29C48/30 ,  B29C48/022 ,  B29C48/08 ,  B29C48/305 ,  B29D11/00788 ,  B29K2021/003 ,  B29K2101/12 ,  B29K2105/16 ,  B29K2421/00 ,  B29K2995/0026 ,  B29L2007/008 ,  B29L2011/00 ,  C08J5/18 ,  C08J2333/12 ,  C08J2333/14 ,  C08J2351/00 ,  C08J2351/04 ,  C08J2351/06 ,  C08J2419/00 ,  C08J2433/12 ,  C08J2433/14 ,  C08J2451/00 ,  C08J2451/04 ,  C08J2451/06

Abstract: Disclosed herein is a method of producing a film, the method being capable of suppressing formation of die lines in melt extrusion molding using a T die. A thermoplastic resin composition having a relaxation modulus of not less than 100 Pa and not more than 2,000 Pa is melted and kneaded, the relaxation modulus being measured under conditions of a temperature of 260° C., distortion of 1%, and a relaxation time of 1 second, and extrusion molding of the thermoplastic resin composition using the T die is performed to form the film. The thermoplastic resin composition may contain an acrylic resin and a rubber particle.

Abstract translation: 本文公开了一种膜的制造方法，该方法能够抑制使用T模头的熔融挤出成型中的模具线的形成。 将松弛模量为100Pa以上且2000Pa以下的热塑性树脂组合物熔融混炼，在260℃的温度，1％的变形和松弛时间的条件下测定松弛模量 1秒，并且使用T模头进行热塑性树脂组合物的挤出成型以形成膜。 热塑性树脂组合物可以含有丙烯酸树脂和橡胶颗粒。

公开(公告)号：US10598822B2

公开(公告)日：2020-03-24

申请号：US14782243

申请日：2013-06-26

Applicant: KANEKA CORPORATION

Inventor： Fuminobu Kitayama ,  Nobuyoshi Maizuru ,  Keisuke Hatano

IPC: G02B1/04 ,  C08L51/06 ,  C08F265/06 ,  C08J5/18 ,  G02B5/32 ,  B32B27/30 ,  G02B5/30

Abstract: An object of the present invention is to provide an optical resin material and an optical film, which are very small in both orientation birefringence and photoelastic birefringence, excellent in transparency, have few defects due to foreign substances, and are excellent in heat resistance and mechanical strength. Provided is an optical resin material containing a graft copolymer (C) obtained by polymerizing a vinyl-based monomer mixture (B) in the presence of a vinyl-based polymer (A) having at least one crosslinked structure layer, wherein the graft copolymer (C) has an orientation birefringence of −15×10−4 to 15×10−4 and a photoelastic constant of −10×10−12 to 10×10−12 Pa−1.

公开(公告)号：US10184019B2

公开(公告)日：2019-01-22

申请号：US15107958

申请日：2014-12-24

Applicant: Kaneka Corporation

Inventor： Fuminobu Kitayama ,  Nobuyoshi Maizuru ,  Keisuke Hatano

IPC: C08F220/18 ,  C08F220/14 ,  C08J5/18 ,  G02B1/04 ,  C08K3/013

Abstract: An object of the present invention is to provide an optical thermoplastic resin having excellent transparency and color tone, and also excellent heat stability, as well as being extremely low in both orientation birefringence and photoelastic birefringence; and a formed body made of said resin. This optical thermoplastic resin has a rate of reduction in melt viscosity of less than 20%, an orientation birefringence of −1.7×10−4 to 1.7×10−4, a photoelastic constant of −2×10−12 to 2×10−12 Pa−1, and, when formed into a 2 mm-thick formed body, has a haze of 1% or less.