Polymer scale preventive agent containing a condensation product

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

1994-10-11

1996-11-19

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...

427230, 524430, 524431, 524510, 524557, C08K 322, C08K 336, C08K 220

Patent

active

055763707

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 of (A-1) a hydroxynaphthalene compound and (A-2) an aldehyde compound, and (B) an inorganic colloid. This agent 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, not only in the liquid-phase region but also in the vicinity of the interface between the gas and liquid phases in the vessel, and useful in producing a polymer that shows very few fish eyes and good whiteness when formed into sheets or the like.

REFERENCES:
patent: 3669946 (1972-06-01), Koyanagi
patent: 4111884 (1978-09-01), Takase
patent: 4200712 (1980-04-01), Cohen
patent: 4859717 (1989-08-01), Hoskin
patent: 5034478 (1991-07-01), Shimizu
patent: 5130386 (1992-07-01), Kaneko

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