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Patent Searching and Data


Title:
PRODUCTION OF THERMOPLASTIC RESIN
Document Type and Number:
Japanese Patent JPS63304011
Kind Code:
A
Abstract:

PURPOSE: To obtain the titled resin outstanding in impact and heat distortion resistances, etc., by incorporating, in the presence of a rubbery polymer, a mixture comprising acrylonitrile and styrene, α-methylstyrene mixture and acrylonitrile mixture in the reaction system in this order while carrying out polymerization.

CONSTITUTION: First, 2W40pts.wt. of a monomer mixture of acrylonitrile and styrene in the weight ratio of the former to the latter of 10W40/90W60 is polymerized, using as the emulsifying agent a compound of formula (R is 10W24C alkyl or alkylene; M is Na or K), in the presence of 5W30pts.wt. of a rubbery polymer. Thence, 50W90pts.wt. of α-methylstyrene or a second monomer mixture containing ≥80wt.% of α-methylstyrene is added to the system followed by gradually adding a third monomer mixture containing ≥70wt.% of acrylonitrile so that, in combination with the second monomer mixture, the weight ratio: α-methylstyrene/acrylonitrile is 95W65/5W35, while carrying out polymerization, thus obtaining the objective thermoplastic resin.


Inventors:
MATSUMOTO SHIGEMI
SHIBATA TAKAO
Application Number:
JP14053887A
Publication Date:
December 12, 1988
Filing Date:
June 04, 1987
Export Citation:
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Assignee:
KANEGAFUCHI CHEMICAL IND
International Classes:
C08F2/00; C08F2/26; C08F2/44; C08F212/08; C08F212/10; C08F220/44; (IPC1-7): C08F2/00; C08F2/26; C08F2/44; C08F212/08; C08F220/44