Title:
PROCESS FOR PRODUCTION OF POLYPHENYLENE ETHER RESIN MOLDED ARTICLE
Document Type and Number:
WIPO Patent Application WO/2012/008006
Kind Code:
A1
Abstract:
Provided is a process for producing a pellet that has good color and does not undergo the deterioration in physical properties from a polyphenylene ether resin raw material and a polystyrene resin raw material with high production efficiency.
Specifically provided is a process for producing a polyphenylene ether resin molded article (a pellet) by kneading a polyphenylene ether resin and a polystyrene resin with each other in a molten state and carrying out the extrusion molding of the kneaded material. The process is characterized in that 1) the polyphenylene ether resin to be used is a granular material which is produced by compressing a powdery material of a polyphenylene ether resin having a toluene concentration of 0.01-0.5 mass% at a temperature equal to or lower than Tg to solidify the powdery material and, if necessary, grinding a solidified material and which has an average particle diameter of 0.1-10 mm, an apparent density of 0.35-0.7 g/cm3 and a toluene concentration of 0.01-0.5 mass%, 2) the polystyrene resin to be used is a particulate material having an average particle diameter of 1-5 mm and an apparent density of 0.5-0.7 g/cm3, and these materials are fed into an extruder, heated, molten, kneaded and extruded.
Inventors:
TAJIRI Toshiyuki (C/O Mitsubishi Engineering-Plastics Corporation, 6-2 Higashi-yawata 5-Chome, Hiratsuka-sh, Kanagawa 16, 〒2540016, JP)
Application Number:
JP2010/061773
Publication Date:
January 19, 2012
Filing Date:
July 12, 2010
Export Citation:
Assignee:
Mitsubishi Engineering-Plastics Corporation (Shiodome Sumitomo-Bldg. 25F, 9-2 Higashi-shinbashi 1-Chome, Minato-k, Tokyo 21, 〒1050021, JP)
三菱エンジニアリングプラスチックス株式会社 (〒21 東京都港区東新橋一丁目９番２号 汐留住友ビル２５階 Tokyo, 〒1050021, JP)
三菱エンジニアリングプラスチックス株式会社 (〒21 東京都港区東新橋一丁目９番２号 汐留住友ビル２５階 Tokyo, 〒1050021, JP)
International Classes:
B29B9/06; B29C47/00; C08L25/04; C08L71/12; B29K71/00
Attorney, Agent or Firm:
KAWABI Kenji (Higashi-ikebukuro Orimoto Bldg, 6th floor 9-7, Higashi-ikebukuro 3-chome, Toshima-k, Tokyo 13, 〒1700013, JP)
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Claims:
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