Continuous process for the preparation of rubber modified polyme

Details Continuous process for the preparation of rubber modified polyme Continuous process for the preparation of rubber modified polyme

1982-09-29

1984-05-29

Michl, Paul R.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525316, C08F27902

Patent

active

044516126

ABSTRACT:
The present invention relates to a method for the production of high impact polystyrene utilizing a continuous process in place of the previously known batch polymerization techniques. The continuous process includes the steps of rubber solution preparation; prepolymerization; second stage polymerization; devolatilization and separation extrusion and pelletizing.

REFERENCES:
patent: 2727884 (1955-12-01), McDonald et al.
patent: 3123655 (1964-03-01), Otting
patent: 3243481 (1966-03-01), Ruffing et al.
patent: 3485782 (1969-12-01), Nagle
patent: 3658946 (1972-04-01), Bronstert
patent: 3903202 (1975-09-01), Carter
patent: 3945976 (1976-03-01), McCurdy
patent: 3954910 (1976-05-01), Kropp

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