Polymers based on vinyl chloride prepared by mass polymerization

Details Polymers based on vinyl chloride prepared by mass polymerization Polymers based on vinyl chloride prepared by mass polymerization

1992-09-08

1993-09-07

Henderson, Christopher

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C08F11406

Patent

active

052430073

ABSTRACT:
A process for preparing polymers and copolymers based on vinyl chloride by mass polymerization of a monomer composition based on vinyl chloride, comprising carrying out at least part of the polymerization reaction in a polymerization zone defined by an essentially spherical wall by effecting in the said polymerization zone a controlled and regulated circulation of the polymerization reaction mixture by means of a rotated blade-type turbine assembly, where the said blades pass by in the vicinity of the said wall over 10% to 60% of its surface, the reaction mixture being caused by the centrifugal force of said rotated blade-type turbine assembly to perform an at least partially ascending movement over at least part of the spherical wall and falling back, essentially under the action of gravity in the central part of the spherical polymerization zone, thus ensuring intensive mixing without dead space.

REFERENCES:
patent: 3546192 (1970-12-01), Borsini
patent: 3558584 (1971-01-01), Thomas
patent: 3687917 (1972-08-01), Wisseroth
patent: 3726648 (1973-04-01), Weber
patent: 4217444 (1980-08-01), Pompon
patent: 4501870 (1985-02-01), Kidoh
patent: 4740571 (1988-04-01), Nagano

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