Process for producing rubber modified styrene resins

Details Process for producing rubber modified styrene resins Process for producing rubber modified styrene resins

1981-11-19

1983-06-14

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...

526 88, C08F27902

Patent

active

043884474

ABSTRACT:
Disclosed is a process for continuously producing rubber modified styrene resins wherein the rubbery phase including a rubber-like polymer is transformed into dispersed particles by using a reactor having both a helical-blade agitator mounted in a draft tube and an auxiliary agitator, by establishing a specified agitating force and a specified degree of circulation of the fluid within the reactor, and by maintaining a specified relation between the weight percentages, based on the total amount of all components within the reactor, of the rubber-like polymer and the monomer converted to polymer. According to this process, various grades of high-impact rubber modified styrene resins having excellent surface properties can be obtained without any adhesion of rubber-like matter to the reactor and without any formation of fisheyes in final products.

REFERENCES:
patent: 3438952 (1969-04-01), Christensen
patent: 3706719 (1972-12-01), Goffinet
patent: 4277585 (1981-07-01), Fournel
patent: 4282334 (1981-08-01), Walter

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