Title:
STYRENIC COPOLYMER AND PRODUCTION METHOD THEREFOR, AND EXTRUDED FOAM SHEET AND MOLDED ARTICLE THEREOF
Document Type and Number:
WIPO Patent Application WO/2017/170591
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a styrenic copolymer that exhibits superior formability, and contains less gelatinous material. This styrenic copolymer is formed from a conjugated divinyl compound having a number average molecular weight (Mn) of 850-100,000 and one or more types of monovinyl compounds containing at least a styrenic compound, wherein: the contained amount of the conjugated divinyl compound is 2.0×10-6 to 4.0×10-4 moles per 1 mole of the monovinyl compounds; and the styrenic copolymer has a weight average molecular weight (Mw) of 200,000-500,000, and the proportion of the copolymer having a molecular weight of 2,000,000 or more is 0.3-6.0%.
Inventors:
NAKAGAWA YU (JP)
KANAYAMA AKIHIRO (JP)
ODASHIMA SEIJI (JP)
KANAYAMA AKIHIRO (JP)
ODASHIMA SEIJI (JP)
Application Number:
PCT/JP2017/012725
Publication Date:
October 05, 2017
Filing Date:
March 28, 2017
Export Citation:
Assignee:
PS JAPAN CORP (JP)
International Classes:
C08F290/00; C08J9/12
Domestic Patent References:
| WO2011118640A1 | 2011-09-29 |
Foreign References:
| JP2011202071A | 2011-10-13 | |||
| JP2005281405A | 2005-10-13 | |||
| JP2007284591A | 2007-11-01 | |||
| JP2005053939A | 2005-03-03 | |||
| JP2007269848A | 2007-10-18 |
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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