Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymerizing in reactor of specified material – or in reactor...
Patent
1977-07-25
1978-05-16
Holler, Alan
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymerizing in reactor of specified material, or in reactor...
260880R, 526 74, 526340, C08F 224, C08F 200, C08F 1208, C08F27904
Patent
active
040900150
ABSTRACT:
In the emulsion polymerization of a dienic monomer or a mixture containing a dienic monomer and at least one other copolymerizable monomer in an aqueous medium, the deposition of polymer scale on the inner walls of the polymerization reactor and other surfaces in contact with the monomer or monomeric mixture can be remarkably reduced or prevented by providing coating layers of an organopolysiloxane on those surfaces, prior to the polymerization, by applying the organopolysiloxane directly to the surfaces or by applying one or a mixture of hydrolyzable organosilanes to the surfaces, followed by hydrolysis-condensation of the silanes, to form the organopolysiloxane in situ.
REFERENCES:
patent: 3201378 (1965-08-01), Ketterer
patent: 3669946 (1972-06-01), Koyanagi et al.
patent: 4007320 (1977-02-01), Petersen
Hasegawa Niichiro
Kaneko Ichiro
Katsushima Sensaku
Koyanagi Shunichi
Shimizu Toshihide
Holler Alan
Shin-Etsu Chemical Co. , Ltd.
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