Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymerizing in reactor of specified material – or in reactor...
Patent
1991-05-24
1992-10-06
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, 526200, C08F 200
Patent
active
051532816
ABSTRACT:
A method of preventing polymer scale deposition during polymerization of a monomer having an ethylenically double bond in a polymerization vessel, comprising the step of carrying out said polymerization in a polymerization vessel of which the inner wall surface has a coating comprising a water-soluble polysaccharide; and a polymer scale preventive agent comprising polysaccharide. By use of the method or agent, deposition of polymer scale can be effectively prevented; in addition, polymers with a high whiteness can be prepared. Moreover, the scale preventive agent used has no poisonousness or the like and is highly safe.
REFERENCES:
patent: 4182809 (1980-01-01), Hong et al.
patent: 4657820 (1987-04-01), Halpern et al.
Patent Abstracts of Japan, vol. 12, No. 450 (C-547) [3297], Nov. 25, 1988; & JP-A-63 175 002 (Shin Etsu Chem. Co., Ltd) Jul. 19, 1988 *abstract*.
Sato Takanori
Shimizu Toshihide
Schofer Joseph L.
Shin-Etsu Chemical Co. , Ltd.
Weber Tom
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