Polymerization of ethylenic monomer with scale preventive agent

Details Polymerization of ethylenic monomer with scale preventive agent Polymerization of ethylenic monomer with scale preventive agent

1996-06-25

1997-04-01

Henderson, Christopher

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

Synthetic resins

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

5263442, C08F 224, C08F 220

Patent

active

056166605

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: 5548039 (1996-08-01), Shimizu

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