Formed article

Patent metadata

Field	Value
Publication number	US-10072108-B2
Application number	US-201515312983-A
Country	US
Kind code	B2
Filing date	Apr 20, 2015
Priority date	May 23, 2014
Publication date	Sep 11, 2018
Grant date	Sep 11, 2018

Abstract

Provided is a film, sheet, plate, or other such formed article having excellent transparency made of a copolymer obtained from a cyclic olefin monomer and an α-olefin monomer. The present invention provides a formed article made from a copolymer having Tg of 170° C. or higher and an Al content of 50 ppm or less that is a copolymer including a structural unit of a cyclic olefin monomer (A) derived from norbornene and a structural unit of a monomer (B) derived from at least one C4-C12 α-olefin.

First claim

What is claimed is:

1. A formed article comprising a copolymer, the copolymer comprising;
a structural unit of a cyclic olefin monomer (A) derived from norbornene, and
a structural unit of a monomer (B) derived from at least one of C4 to C12 α-olefins,
wherein the copolymer has a Tg of 200° C. or more and an Al content of 50 ppm or less.

2. The formed article according to claim 1 , wherein the formed article is a transparent film having a value of haze of 0.1 to 1.0% as measured in accordance with JIS K7136 method.

3. The formed article according to claim 1 , wherein the number average molecular weight of the copolymer is 20,000 or more and 200,000 or less.

4. The formed article according to claim 1 , wherein a value of haze as measured in accordance with JIS K7136 method is 0.1 to 1.0%.

5. A transparent electrically conductive layered product, comprising the formed article according to claim 1 and a transparent electrically conductive layer, wherein a value of haze of the transparent electrically conductive layer as measured in accordance with JIS K7136 method is 5% or less.

Assignees

• Daicel Corp

Inventors

• Yaegashi Takayuki
• Osano Keiichi
• Okano Yoshimichi
• Umemoto Kouichi
• Yagi Takeshi

Classifications

• C08F232/00 Primary

  Copolymers of cyclic compounds containing no unsaturated aliphatic radicals in a side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic ring system · CPC title

• C08F210/00 Primary

  Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond · CPC title

• C08F210/14

  Monomers containing five or more carbon atoms · CPC title

• C08J5/18 Primary

  Manufacture of films or sheets · CPC title

• C08F210/04

  Monomers containing three or four carbon atoms · CPC title