Process for production of styrene polymers

Details Process for production of styrene polymers Process for production of styrene polymers

1989-09-07

1991-02-05

Smith, Edward J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526165, 5263472, 526905, C08F 4642, C08F 1208

Patent

active

049905805

ABSTRACT:
A process for production of styrene polymers is disclosed, comprising polymerizing styrene monomers by the use of a catalyst comprising (a) a titanium compound and (b) a contact product of an organoaluminum compound and a condensing agent, and further in the presence of hydrogen. The styrene polymers produced by the present process have a stereo structure that substituent groups are mainly in the syndiotactic configuration. Thus the styrene polymers have high heat resistance and high solvent resistance as compared with atactic polystyrene commonly used and are useful as materials for production of articles for which high heat resistance and high solvent resistance are required.

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patent: 3489737 (1970-01-01), Natta et al.
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patent: 4542199 (1985-09-01), Kaminsky et al.
Macromolecules-Crystalline Syndiotactic Polystyrene, vol. 19, pp. 2464-2465, Sep. 1986.
Vysokomol Soedin B 1973, 15(8), 612-615 and translation.

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