Process to prevent scale adhesion using the condensation product

Details Process to prevent scale adhesion using the condensation product Process to prevent scale adhesion using the condensation product

1994-06-16

1996-01-16

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, C08F 202, C08F 204, C08F 222, C08F 234

Patent

active

054848563

ABSTRACT:
A polymer scale preventive process for use in polymerization of a monomer having an ethylenically unsaturated double bond, comprising an alkaline solution containing a condensation product of (A) an aromatic amine compound having at least two amino groups and (B) an aromatic tetracarboxylic acid anhydride. This process is used for forming a coating on the inner wall, etc. of a polymerization vessel. Such a vessel is effective in preventing polymer scale deposition and useful in producing a polymer that shows very few fish eyes and good whiteness when formed into sheets or the like.

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