Method of preventing polymer scale formation

Details Method of preventing polymer scale formation Method of preventing polymer scale formation

1989-08-09

1993-03-23

Warden, Robert J.

Chemical apparatus and process disinfecting, deodorizing, preser

Process disinfecting, preserving, deodorizing, or sterilizing

422241, 427230, 526 62, C08F 200

Patent

active

051961644

ABSTRACT:
This process is a method of preventing polymer scale formation in a polymerization vessel during the polymerization of a monomer having an ethylenically unsaturated double bond. The inner wall surface of a polymerization vessel is coated with a water-based coating solution containing (A) a water-soluble anionic dye and (B) at least one water-insoluble cationic dye or water-insoluble nitrogen-containing organic compound, where the water-based coating solution has a pH of 7 or less. The coating solution is applied and then dried to form a coating.

REFERENCES:
patent: 3959235 (1976-05-01), Nishigaki et al.
patent: 4173696 (1979-11-01), Koyanagi et al.
patent: 4263421 (1981-04-01), Jones et al.
patent: 4757124 (1988-07-01), Koyanagi et al.
patent: 4933399 (1990-06-01), Shimizu et al.

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