POLYMER COMPOSITION, MOLDED BODY, OPTICAL MEMBER AND METHOD FOR PRODUCING POLYMER COMPOSITION

WIPO Patent Application WO/2020/240924

A1

The present invention provides a polymer composition which has sufficient heat resistance and optical characteristics.　A polymer composition which contains a polymer containing a monomer unit having a ring structure, and which is a polymer composition A containing a polymer of a monomer having a ring structure, or the like. If a flat plate having a length of 120 mm, a width of 100 mm and a thickness of 3.0 mm is molded from the polymer composition under the injection molding conditions described below, the difference between the amount of monomers contained in the flat plate obtained after cooling of five minutes and the amount of monomers contained in the flat plate obtained after cooling of one minute is from 1,000 ppm by mass to 12,000 ppm by mass (inclusive). (1) A non-vent-type injection molding machine is used. (2) A cold runner type die is used. (3) The cylinder temperature is set to 260°C. (4) The ratio of the injection volume of the injection molding machine to the volume of a molded article is 4.5.

JPH07292202	METHYL METHACRYLATE/ALPHA-METHYLSTYRENE COPOLYMER RESIN COMPOSITION
JPH05140423	LIQUID CRYSTALLINE POLYESTER RESIN COMPOSITION

OKAZAKI RYOSUKE (JP)
MANABE MAKOTO (JP)

PCT/JP2020/003394

December 03, 2020

January 30, 2020

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SUMITOMO CHEMICAL CO (JP)

C08K5/49; C08L33/04; C08L35/00; C08F8/48

WO2019013186A1	2019-01-17
WO2017022393A1	2017-02-09
WO2019013186A1	2019-01-17

JP2018203911A	2018-12-27
JP2017101225A	2017-06-08
JP2017039951A	2017-02-23
JP2010111729A	2010-05-20
JP2019048965A	2019-03-28
JP2003105158A	2003-04-09
JP2004224813A	2004-08-12
JP2019203123A	2019-11-28
JP2009256406A	2009-11-05

See also references of EP 3978540A4

NAKAYAMA, Tohru et al. (JP)

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