Cyclic olefin resin composition film

Patent metadata

Field	Value
Publication number	US-2017145174-A1
Application number	US-201515323880-A
Country	US
Kind code	A1
Filing date	Jul 14, 2015
Priority date	Jul 15, 2014
Publication date	May 25, 2017
Grant date	—

Abstract

A cyclic olefin resin composition film has excellent anti-blocking properties and toughness. A cyclic olefin resin composition film containing a cyclic olefin resin and a styrene-based elastomer; the cyclic olefin resin composition film having a first surface layer part having a thickness of from 25 to 45% of a total thickness, a second surface layer part having a thickness of from 25 to 45% of the total thickness, and an internal part having a thickness of from 10 to 50% of the total thickness between the first surface layer part and the second surface layer part; an average value of a minor-axis dispersion diameter of the styrene-based elastomer in the first surface layer part or the second surface layer part being from 75 to 125% of an average value of a minor-axis dispersion diameter of the styrene-based elastomer of the internal part.

First claim

1 . A cyclic olefin resin composition film comprising:
a cyclic olefin resin; and a styrene-based elastomer, the cyclic olefin resin composition film having, a first surface layer part having a thickness of from 25 to 45% of a total thickness, a second surface layer part having a thickness of from 25 to 45% of the total thickness, and an internal part having a thickness of from 10 to 50% of the total thickness between the first surface layer part and the second surface layer part, an average value of a minor-axis dispersion diameter of the styrene-based elastomer in the first surface layer part or the second surface layer part being from 75 to 125% of an average value of a minor-axis dispersion diameter of the styrene-based elastomer of the internal part.

2 . The cyclic olefin resin composition film according to claim 1 , wherein the average value of the minor-axis dispersion diameter of the styrene-based elastomer of the first surface layer part or the second surface layer part is from 90 to 110% of the average value of the minor-axis dispersion diameter of the styrene-based elastomer of the internal part.

3 . The cyclic olefin resin composition film according to claim 1 , wherein the minor-axis dispersion diameter of the styrene-based elastomer of the first surface layer part, the internal part, and the second surface layer part is not greater than 2.0 μm.

4 . The cyclic olefin resin composition film according to claim 1 , wherein an added amount of the styrene-based elastomer is not less than 5 wt. % and not greater than 35 wt. %.

5 . The cyclic olefin resin composition film according to claim 1 , wherein the cyclic olefin resin is an addition copolymer of ethylene and norbornene.

6 . The cyclic olefin resin composition film according to claim 1 , wherein the styrene-based elastomer is one or more types selected from the group consisting of styrene/ethylene/butylene/styrene block copolymers, styrene/ethylene/propylene/styrene block copolymers, and hydrogenated styrene/butadiene block copolymers.

7 . A transparent conductive element comprising the cyclic olefin resin composition film described in claim 1 as a substrate.

8 . (canceled)

9 . (canceled)

10 . (canceled)

11 . A production method for an olefin resin composition film comprising the steps of:
heat-melting a cyclic olefin resin and a styrene-based elastomer; and extruding the heat-melted cyclic olefin resin composition into a film with an extrusion method so as to obtain a cyclic olefin resin composition film; the cyclic olefin resin composition film having a first surface layer part having a thickness of from 25 to 45% of a total thickness, a second surface layer part having a thickness of from 25 to 45% of the total thickness, and an internal part having a thickness of from 10 to 50% of the total thickness between the first surface layer part and the second surface layer part; an average value of a minor-axis dispersion diameter of the styrene-based elastomer in the first surface layer part and the second surface layer part being from 75 to 125% of an average value of a minor-axis dispersion diameter of the styrene-based elastomer of the internal part.

12 . The cyclic olefin resin composition film according to claim 2 , wherein the minor-axis dispersion diameter of the styrene-based elastomer of the first surface layer part, the internal part, and the second surface layer part is not greater than 2.0 μm.

13 . The cyclic olefin resin composition film according to claim 2 , wherein an added amount of the styrene-based elastomer is not less than 5 wt. % and not greater than 35 wt. %.

14 . The cyclic olefin resin composition film according to claim 3 , wherein an added amount of the styrene-based elastomer is not less than 5 wt. % and not greater than 35 wt. %.

15 . The cyclic olefin resin composition film according to claim 2 , wherein the cyclic olefin resin is an addition copolymer of ethylene and norbornene.

16 . The cyclic olefin resin composition film according to claim 3 , wherein the cyclic olefin resin is an addition copolymer of ethylene and norbornene.

17 . The cyclic olefin resin composition film according to claim 4 , wherein the cyclic olefin resin is an addition copolymer of ethylene and norbornene.

18 . The cyclic olefin resin composition film according to claim 2 , wherein the styrene-based elastomer is one or more types selected from the group consisting of styrene/ethylene/butylene/styrene block copolymers, styrene/ethylene/propylene/styrene block copolymers, and hydrogenated styrene/butadiene block copolymers.

19 . The cyclic olefin resin composition film according to claim 3 , wherein the styrene-based elastomer is one or more types selected from the group consisting of styrene/ethylene/butylene/styrene block copolymers, styrene/ethylene/propylene/styrene block copolymers, and hydrogenated styrene/butadiene block copolymers.

20 . The cyclic olefin resin composition film according to claim 4 , wherein the styrene-based elastomer is one or more types selected from the group consisting of styrene/ethylene/butylene/styrene block copolymers, styrene/ethylene/propylene/styrene block copolymers, and hydrogenated styrene/butadiene block copolymers.

21 . The cyclic olefin resin composition film according to claim 5 , wherein the styrene-based elastomer is one or more types selected from the group consisting of styrene/ethylene/butylene/styrene block copolymers, styrene/ethylene/propylene/styrene block copolymers, and hydrogenated styrene/butadiene block copolymers.

Assignees

• Dexerials Corp

Inventors

• Ishimori Taku
• Horii Akihiro
• Obata Kei
• Hosoya Ken

Classifications

• B29C48/08

  flexible, e.g. films · CPC title

• B29C48/022

  characterised by the choice of material · CPC title

• C08L45/00 Primary

  Compositions of homopolymers or copolymers of compounds having no unsaturated aliphatic radicals in side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic or in a heterocyclic ring system; Compositions of derivatives of such polymers (of cyclic anhydrides or imides C08L35/00; of cyclic esters of polyfunctional acids C08L31/00) · CPC title

• C08J2323/08

  Copolymers of ethene (C08J2323/16 takes precedence) · CPC title

• B29K2995/0005

  Conductive · CPC title