Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymerizing in reactor of specified material – or in reactor...
Patent
1975-10-23
1977-04-05
Smith, Ronald H.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymerizing in reactor of specified material, or in reactor...
427230, 427239, 427236, C08F 322
Patent
active
040163415
ABSTRACT:
Vinyl chloride monomer, or a mixture thereof with a copolymerizable monomer or monomers, is bulkpolymerized so that the deposition of polymer scale on the inner walls of the polymerization vessel and other surfaces in contact with the monomer or monomers can be greatly reduced by coating them with phosphoric esters, polyphosphoric esters or their alkali metal salts before the polymerization is commenced. Clean-up operations following each polymerization run are much simplified.
REFERENCES:
patent: 2380552 (1945-07-01), Semon et al.
patent: 3778423 (1973-12-01), Reiter
Eguchi Yoshitsugu
Kurimoto Kazuhiko
Kuwata Satoshi
Ogawa Kinya
Shin-Etsu Chemical Company Limited
Silverberg S.
Smith Ronald H.
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