Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymerizing in reactor of specified material – or in reactor...
Patent
1976-12-03
1978-02-28
Holler, Alan
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymerizing in reactor of specified material, or in reactor...
C08F 218, C08F 220, C08F 1406
Patent
active
040769518
ABSTRACT:
In the suspension polymerization in an aqueous medium of vinyl chloride alone or of a monomer mixture comprising vinyl chloride as a major component and other monomers copolymerizable therewith as a minor component, depositin of polymer scales on the inside surfaces of the polymerization vessel is surprisingly prevented by coating the interior surface of the vessel and auxiliary equipment prior to the polymerization with at least one compound selected from the group consisting of hydroxyhydroquinone and pyrogallol.
REFERENCES:
patent: 3507849 (1970-04-01), Daues, Jr.
patent: 3669946 (1972-06-01), Koyanagi et al.
patent: 3778423 (1973-12-01), Reiter
Katayama Kazuhiko
Nakanishi Hirokazu
Nishigaki Masahiko
Nishizawa Minoru
Ohtani Akira
Holler Alan
Kanegafuchi Kagaku Kogyo & Kabushiki Kaisha
Kojima Moonray
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