Method of preventing polymer-scale formation

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

1988-12-07

1990-06-12

Schofer, Joseph L.

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

Synthetic resins

Polymerizing in reactor of specified material, or in reactor...

526 74, 526199, 526200, 526210, 526221, 526342, 427230, 427384, 4273881, C08F 212, B05D 138

Patent

active

049333992

ABSTRACT:
A method of preventing polymer scales from sticking in a polymerization vessel during the polymerization of a monomer having an ethylenically double bond, wherein said polymerization is carried out in a polymerization vessel of which the inner wall and other parts with which said monomer comes into contact during polymerization are previously first coated with (a) a coating solution comprising a cationic dye and the resulting coating is then coated with (b) a coating solution comprising at least one component selected from the group consisting of anionic polymeric compounds, amphoteric polymeric compounds and hydroxyl group-containing organic compounds. Polymer scale formation can be effectively prevented.

REFERENCES:
patent: 3669946 (1972-06-01), Koyanagi et al.
patent: 4272622 (1981-06-01), Kitamura et al.

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