Title:
透明性耐熱樹脂成形材料、その製造方法とその用途
Document Type and Number:
Japanese Patent JP4953494
Kind Code:
B2
Abstract:
The present invention provides a production process for a transparent heat-resistant resin, and further, a transparent heat-resistant resin and uses therefor, wherein the production process involves high dealcoholation conversion and a low content of residual volatiles in the resultant resin, and therefore can prevent foam or silver streak from occurring in the molded product, and further, facilitates melt-molding such as injection molding, and is fit for industrial production, and involves good efficiency. The production process for a transparent heat-resistant resin comprises the step of running a dealcoholation reaction of a polymer having a hydroxyl group and an ester group in its molecular chain to introduce a lactone ring structure into the polymer to obtain a transparent resin having the heat resistance, and is characterized in that the dealcoholation reaction is run in the presence of a solvent, and further characterized by further comprising a devolatilization step which is carried out jointly with the dealcoholation reaction.
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Inventors:
Hero Asano
Kazuchika Fujioka
Kazuchika Fujioka
Application Number:
JP24227299A
Publication Date:
June 13, 2012
Filing Date:
August 27, 1999
Export Citation:
Assignee:
Nippon Shokubai Co., Ltd.
International Classes:
C08F8/48; C08F120/06; C08F8/16; C08F20/26
Domestic Patent References:
| JP5374588A | ||||
| JP3205407A | ||||
| JP5269492A | ||||
| JP9241323A | ||||
| JP10324714A |
Attorney, Agent or Firm:
Takehiko Matsumoto