Polymer scale preventive agent comprising a condensation product

Details Polymer scale preventive agent comprising a condensation product Polymer scale preventive agent comprising a condensation product

1997-10-20

1999-03-30

Henderson, Christopher

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

252 80, 524548, 524557, 524592, 524704, 524734, C08K 300

Patent

active

058891030

ABSTRACT:
A polymer scale preventive agent for use in polymerization of a monomer having an ethylenically unsaturated double bond, comprising an alkaline solution containing (A) a condensation product having a molecular weight of 400 to 50,000 obtained by condensing a quinone compound. This agent is applied to the inner wall surfaces of a polymerization vessel, and dried to form a coating. Such a vessel is effective in preventing polymer scale deposition, not only on the areas located in the liquid-phase region but also on the areas around the interface between the gas and liquid phases in the vessel, and is useful in producing a polymer that shows few fish eyes and good whiteness when formed into sheets or the like.

REFERENCES:
patent: 4080173 (1978-03-01), Cohen
patent: 5241022 (1993-08-01), Watanabe et al.
patent: 5352748 (1994-10-01), Shimizu
patent: 5399613 (1995-03-01), Shimizu

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