Styrene-based polymer and method for the preparation thereof

Details Styrene-based polymer and method for the preparation thereof Styrene-based polymer and method for the preparation thereof

1990-01-02

1991-10-22

Schofer, Joseph L.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526336, 526347, C08F22210, C08F 1236

Patent

active

050596675

ABSTRACT:
The styrene-based polymer of the invention, which is excellent in the impact strength, rigidity and heat resistance as well as high-speed moldability, is characterized by a specified weight-average molecular weight and a specified relatively low content of a moiety derived from a polyfunctional vinyl compound, e.g., divinyl benzene. The polymer is also characterized by the behavior of kinematic viscosity. Such a styrene-based polymer can be prepared by the radical polymerization reaction of styrene monomer with admixture of a limited amounts of a polyfunctional vinyl compound and a polymerization initiator.

REFERENCES:
patent: 2665270 (1950-12-01), Howard et al.
patent: 3231544 (1966-01-01), Cotman, Jr. et al.
patent: 4228269 (1980-10-01), Loshack et al.

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