Process for production of styrene-based polymers

Details Process for production of styrene-based polymers Process for production of styrene-based polymers

1991-10-03

1993-05-18

Bleutge, John C.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524783, 524785, 524786, 524788, 524790, 526160, C08K 308, C08F 464

Patent

active

052122328

ABSTRACT:
A process for producing a styrene-based polymer, particularly a styrene-based polymer having mainly a syndiotactic structure by polymerizing a styrene-based monomer in the presence of a filler by using a catalyst containing (A) a titanium compound and (B) aluminoxane as main components. The filler acts as a catalyst carrier, increasing catalyst activity, and thus de-ashing treatment is not needed. When the filler is used in a large amount, there is obtained a composition in which the filler is uniformly dispersed in the styrene-based polymer. The styrene-based polymer or styrene-based polymer-containing composition is excellent in heat resistance and chemical resistance.

REFERENCES:
patent: 3864427 (1975-02-01), Nakane et al.
patent: 4447475 (1984-05-01), Lubbock et al.
patent: 4680353 (1987-07-01), Ishihara et al.

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