Method for preventing polymer scale deposition on the reactor wa

Details Method for preventing polymer scale deposition on the reactor wa Method for preventing polymer scale deposition on the reactor wa

1986-07-18

1987-11-24

Bell, Janyce A.

Coating processes

Interior of hollow article coating

427239, 4273977, 4273978, 526 62, C08F 200

Patent

active

047088907

ABSTRACT:
The invention provides an efficient method for preventing polymer scale deposition on the reactor walls in the suspension or emulsion polymerization of an ethylenically unsaturated monomer, e.g. vinyl chloride and styrene, by coating the reactor walls, prior to introduction of the polymerization mixture, with an aqueous coating solution containing (a) a silicic acid compound, e.g. colloidal silicic acid, and (b) a phosphorous compound, e.g. phytic acid and polyphosphoric acid, in a specified weight proportion followed by drying.

REFERENCES:
patent: 2380552 (1945-07-01), Simon et al.
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patent: 3994392 (1976-11-01), Kajiyama et al.
patent: 4016341 (1977-04-01), Ogawa et al.
patent: 4539230 (1985-09-01), Shimizu et al.
patent: 4564537 (1986-01-01), Austin et al.
patent: 4622245 (1986-11-01), Shimizu et al.

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