Finishing process for syndiotactic vinyl aromatic polymers

Details Finishing process for syndiotactic vinyl aromatic polymers Finishing process for syndiotactic vinyl aromatic polymers

1998-01-30

1999-03-02

Teskin, Fred

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

Synthetic resins

Treating polymer containing material or treating a solid...

528481, 528501, 159 471, 264345, C08F 600, C08F 1204

Patent

active

058772715

ABSTRACT:
The present invention is an improvement in a solid state devolatilization finishing process for a wet feed material of syndiotactic vinyl aromatic polymer containing volatiles, including at least one vinyl aromatic monomer, wherein the improvement comprises: rapidly heating the wet feed material, such that the temperature of the wet feed material is increased at a rate of at least 10.degree. C./min., to a temperature between about 150.degree. C. and the melting point temperature of the syndiotactic vinyl aromatic polymer, while concurrently removing evolved volatiles.

REFERENCES:
patent: 5357014 (1994-10-01), Uchida et al.
patent: 5698652 (1997-12-01), Aoyama et al.

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