Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymerizing in reactor of specified material – or in reactor...
Patent
1992-01-22
1993-08-31
Higel, Floyd D.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymerizing in reactor of specified material, or in reactor...
252 80, 252 82, 252180, 427230, 427384, 427239, 427327, 523464, 526 74, 5262181, 5262191, 5262193, 526191, 526201, 526204, 5263442, C08F 200, C08F 1606, C08F 1808, C08F 2042
Patent
active
052410226
ABSTRACT:
The present invention relates to a coating solution for preventing adhesion of polymer scale and a method for preventing scale adhesion during preparation of polymers which can provide polymers having high quality without coloring thereof while preventing adhesion of polymer scale to a polymerizer when a monomer having an ethylenically unsaturated double bond is polymerized. A coating solution for preventing adhesion of polymer scale which comprises anaphthoquinone natural dyestuffs, anthraquinone natural dyestuffs, tannin natural dyestuffs, xanthone natural dyestuffs, flavonoid natural dyestuffs, or/and benzoquinone natural dyestuffs and a polyvinyl alcohol having a degree of saponification of not less than 70 mole % was applied on at least a part of a polymerizer which comes in contact with a monomer having an ethylenically unsaturated double bond and was dried to give a coating film during polymerization thereof.
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Kitamura Hajime
Ueno Susumu
Usuki Masahiro
Watanabe Mikio
Yono Masayoshi
Higel Floyd D.
Shin-Etsu Chemical Co. , Ltd.
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