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Title:
CYCLIC OLEFIN RESIN
Document Type and Number:
Japanese Patent JP2013018962
Kind Code:
A
Abstract:

To provide a cyclic olefin resin which hardly changes color even if it is exposed to light and heat for a long time.

The cyclic olefin resin includes a repeating unit originated from a cyclic olefin monomer and a repeating unit originated from a noncyclic olefin monomer, wherein the glass transition temperature is ≥120°C, the ratio of the repeating unit originated from the cyclic olefin monomer is ≥40 mol% and ≤60 mol%, the ratio of the repeating unit originated from the noncyclic olefin monomer is ≥40 mol% and ≤60 mol%, and in a dimer of the repeating unit originated from the cyclic olefin monomer, the ratio of a meso dyad to a racemo dyad (a meso dyad/a racemo dyad) is ≤0.1.


Inventors:
Kunimoto, Shigeki
Application Number:
JP2012000111909
Publication Date:
January 31, 2013
Filing Date:
May 15, 2012
Export Citation:
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Assignee:
POLYPLASTICS CO
International Classes:
C08F232/00; C08F210/00; C08K5/00; C08L45/00
Domestic Patent References:
JP2007009010A2007-01-18
JP2009003439A2009-01-08
JP2001072839A2001-03-21
Foreign References:
WO2006030797A12006-03-23
WO2006100974A12006-09-28
Attorney, Agent or Firm:
正林 真之
林 一好