公开(公告)号：US10391694B2

公开(公告)日：2019-08-27

申请号：US15108136

申请日：2014-12-22

Applicant: Kaneka Corporation

Inventor： Keisuke Hatano ,  Yutaka Fujiwara

IPC: B29D11/00 ,  B29C47/14 ,  B29C48/30 ,  B29C48/305 ,  B29C48/08 ,  B29C48/00 ,  C08J5/18 ,  B29K21/00 ,  B29K101/12 ,  B29K105/16 ,  B29L7/00 ,  B29L11/00 ,  B29K421/00

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.

公开(公告)号：US20160326289A1

公开(公告)日：2016-11-10

申请号：US15107958

申请日：2014-12-24

Applicant: KANEKA CORPORATION

Inventor： Fuminobu Kitayama ,  Nobuyoshi Maizuru ,  Keisuke Hatano

IPC: C08F220/18 ,  C08K3/00 ,  G02B1/04 ,  C08J5/18

CPC classification number: C08F220/18 ,  C08F220/14 ,  C08F2220/185 ,  C08J5/18 ,  C08J2333/10 ,  C08J2333/12 ,  C08K3/013 ,  G02B1/04 ,  C08L33/08 ,  C08L33/10

Abstract: An 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 −3.7×10−12 to 3.7×10−12 Pa−1, and, when formed into a 2 mm-thick formed body, has a haze of 1% or less.

Abstract translation: 光学热塑性树脂的熔融粘度降低率小于20％，取向双折射率为-1.7×10 -4〜1.7×10 -4，光弹性常数为-3.7×10-12〜3.7×10- 12Pa-1，当形成2mm厚的成形体时，雾度为1％以下。