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Title:
METHOD FOR PRODUCING THERMOPLASTIC POLYMER COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2017/030095
Kind Code:
A1
Abstract:
Provided is a method for stably producing a thermoplastic polymer composition by easily supplying a polyisobutylene having a peak top molecular weight (Mp) of 5,000-80,000 to a hydrogenated block copolymer. Specifically provided is a method for producing a thermoplastic polymer composition containing (a) a hydrogenated block copolymer and (b) a polyisobutylene having a peak top molecular weight (Mp) of 5,000-80,000 in terms of standard polystyrene as determined by gel permeation chromatography, which comprises the following first step and second step. First step: a step for supplying the polyisobutylene (b) to a twin screw/single screw counter-rotating extruder and plasticizing the polyisobutylene (b) Second step: a step having the following step (i) and step (ii) (i) a step for supplying the hydrogenated block copolymer (a) to a twin screw extruder (ii) a step for supplying the polyisobutylene (b) plasticized in the first step to the twin screw extruder via a quantitative pump and kneading the plasticized polyisobutylene (b) together with the hydrogenated block copolymer (a) supplied in the step (i)

Inventors:
OSHITA SHINYA (JP)
JOGO YOSUKE (JP)
HIRAYAMA YOSHIO (JP)
Application Number:
PCT/JP2016/073788
Publication Date:
February 23, 2017
Filing Date:
August 12, 2016
Export Citation:
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Assignee:
KURARAY CO (JP)
International Classes:
C08J3/20; B29B7/20; B29C48/395
Domestic Patent References:
WO2011040586A12011-04-07
Foreign References:
JP2002219710A2002-08-06
JP2000052335A2000-02-22
JP2006256099A2006-09-28
Other References:
See also references of EP 3339353A4
Attorney, Agent or Firm:
OHTANI, Tamotsu et al. (JP)
Tamotsu Otani (JP)
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