Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymerizing in reactor of specified material – or in reactor...
Patent
1990-05-01
1992-03-24
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...
526206, 526210, 422131, C08F 204
Patent
active
050989685
ABSTRACT:
A method of preventing polymer scale deposition in a polymerization vessel during polymerization of a monomer having an ethylenically double bond, wherein said polymerization is carried out in a polymerization vessel of which the inner wall has a coating comprising a reaction product of a tannin and an acid halide. Polymer scale deposition on the inner wall, etc. of the polymerization vessel can be effectively prevented. The preventive agent used has neither risk of produced polymer being colored nor toxicity.
REFERENCES:
patent: 4105840 (1978-08-01), Cohen
patent: 4255470 (1981-03-01), Cohen et al.
patent: 4267291 (1981-05-01), Jones et al.
patent: 4555555 (1985-11-01), Toyooka et al.
Kaneko Ichiro
Ueno Susumu
Watanabe Mikio
Schofer Joseph L.
Shin-Etsu Chemical Co. , Ltd.
Weber Tom
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