Polymer scale preventive agent

Details Polymer scale preventive agent Polymer scale preventive agent

1992-10-20

1994-04-12

Schofer, Joseph L.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524157, 524287, 524548, 252180, C08K 534, C08K 3906

Patent

active

053026390

ABSTRACT:
A polymer scale preventive agent for use in polymerization of a monomer having an ethylenic double bond, comprising (A) a nitrogen-containing organic compound having at least five continuous conjugated .pi. bonds, (B) an anionic organic compound having at least one group selected from the group consisting of the sulfonic acid group and the carboxylic group and having at least five continuous conjugated .pi. bonds, and (C) a vinylpyrrolidone-based polymer. The agent is used for forming a coating on the inner wall, etc. of a polymerization vessel. Deposition of polymer scale can be effectively prevented not only in the liquid phase area but also in the vicinity of the interface between the gas and liquid phases. Products formed from polymer obtained have very few fish eyes.

REFERENCES:
patent: 3876596 (1975-04-01), Grubert et al.
patent: 4396734 (1983-08-01), Williams et al.
patent: 5034477 (1991-07-01), Shimizu et al.
patent: 5084105 (1992-01-01), Morris et al.

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