公开(公告)号：US10464253B2

公开(公告)日：2019-11-05

申请号：US15300527

申请日：2015-03-26

Applicant: KURARAY CO., LTD.

Inventor： Toshiyuki Zento ,  Naoto Fukuhara ,  Eiji Nakamura ,  Michiyuki Nanba

IPC: B29C55/16 ,  B32B27/30 ,  B29C55/12 ,  C08J5/18 ,  B29C55/00 ,  B29C55/02 ,  G02B5/30 ,  G02B1/14 ,  B32B27/08 ,  B32B27/36 ,  B44C3/02 ,  B29K33/00 ,  B29K69/00 ,  B29K425/00

Abstract: A method of manufacturing a biaxially stretched film according by: (I) preheating a thermoplastic resin film to a temperature in a rubbery plateau region in a storage elastic modulus curve; (II) biaxially stretching the thermoplastic resin film under a condition that a stretching speed is 500%/min or higher while heating the thermoplastic resin film to the temperature in the rubbery plateau region; (III) cooling the thermoplastic resin film after the biaxially stretching (II) to a temperature in a glass-to-rubber transition region or a glass region in the storage elastic modulus curve; and (IV) relaxing the thermoplastic resin film after the cooling (III) at a temperature in the glass-to-rubber transition region.

公开(公告)号：US09796890B2

公开(公告)日：2017-10-24

申请号：US14915526

申请日：2014-08-29

Applicant: KURARAY CO., LTD.

Inventor： Masahiro Kawasaki ,  Isamu Okamoto ,  Eiji Nakamura

IPC: C08F293/00 ,  C09J153/00 ,  C08F8/32 ,  C09J133/24 ,  C09J133/26

CPC classification number: C09J153/005 ,  C08F8/32 ,  C08F293/00 ,  C09J133/24 ,  C09J133/26 ,  C08F293/005

Abstract: A modified acrylic block copolymer is obtained by a method comprising subjecting a block copolymer (C) to a reaction with an amine compound, wherein the block copolymer comprises a polymer block (A) comprising a (meth)acrylic acid ester unit (a) and a polymer block (B′) comprising a (meth)acrylic acid ester unit (b′), the (meth)acrylic acid ester unit (a) is structurally different from the (meth)acrylic acid ester unit (b′), thereby partly or entirely converting the (meth)acrylic acid ester unit (b′) into at least one selected from the group consisting of an N-substituted (meth)acrylamide unit (d), a (meth)acrylic acid unit (c), and an N-substituted bis((meth)acryl)amide unit (e).