Process for producing a highly syndiotactic styrene-based polyme

Details Process for producing a highly syndiotactic styrene-based polyme Process for producing a highly syndiotactic styrene-based polyme

1990-03-09

1991-07-16

Teskin, Fred

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526 86, 526138, 526151, 526159, 526160, 526165, 526346, 5263471, C08F 1208

Patent

active

050326503

ABSTRACT:
A process for producing a styrene-based polymer having a high syndiotactic configuration, which comprises polymerizing a styrene-based monomer with addition of catalyst in such amounts that the conversion at 30 minutes after the polymerization starts becomes 2 to 50%, and then continuing the polymerization with additions of the catalyst when the conversion exceeds 10%.
According to the process, the productivity can be improved while easily attaining safe running of the reactor and successful controlling of reaction heat.

REFERENCES:
patent: 4680353 (1987-07-01), Ishihara et al.

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