Polymerization of vinylic monomer in presence of benzothiazol-hy

Details Polymerization of vinylic monomer in presence of benzothiazol-hy Polymerization of vinylic monomer in presence of benzothiazol-hy

1978-12-20

1981-03-17

Henderson, C. A.

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

Synthetic resins

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

525328, 525349, 526 62, 526200, 526202, 526205, 526257, C08F 200, C08F 1406, C08L 2706

Patent

active

042568544

ABSTRACT:
The present invention provides a process for the manufacture of vinyl chloride polymers by polymerization of the monomer or monomer mixture in aqueous dispersion in the presence of radical-forming catalysts and optionally suspension stabilizers, emulsifiers and further polymerization auxiliaries, which comprises carrying out the polymerization in a reactor the inner walls of which and other parts where polymer deposits may form are coated partially or entirely with a coating containing determined compounds of the formula ##STR1## In accordance with this invention, a substantial suppression of polymer deposit formation is achieved especially in the case of vinyl chloride copolymers.

REFERENCES:
patent: 3669946 (1972-06-01), Koyanagi
patent: 4098972 (1976-07-01), Ogawa
patent: 4105838 (1978-08-01), Kitamura
patent: 4143097 (1979-03-01), Fischer

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