Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1987-11-30
1990-07-31
Schofer, Joseph L.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
526201, C08F 200
Patent
active
RE0332844
ABSTRACT:
The invention provides an improvement in the suspension polymerization of vinyl chloride in an aqueous medium in the presence of a monomer-soluble polymerization initiator, according to which the amount of polymer scale deposition on the reactor walls can be greatly decreased. The improvement comprises admixing the aqueous polymerization medium with (a) a water-soluble crosslinked copolymer of an unsaturated carboxylic acid monomer, e.g. acrylic acid, and a crosslinking monomer such as di(methyl)allyl ether of diethyleneglycol and (b) a non-ionic surface active agent in combination.
REFERENCES:
patent: 2772258 (1956-11-01), Mangelli
patent: 2886552 (1959-05-01), Helligmann et al.
patent: 3488328 (1970-01-01), Koyanagi et al.
patent: 3907730 (1975-09-01), Jones
patent: 3966696 (1976-06-01), Kidoh et al.
patent: 4228264 (1980-10-01), Yamamoto et al.
patent: 4229547 (1980-10-01), Cohen et al.
patent: 4360651 (1982-11-01), Dinbergs
patent: 4377672 (1983-03-01), Geschonke et al.
patent: 4435524 (1984-03-01), Dinbergs
patent: 4458057 (1984-07-01), Basu
Itoh Ken'ichi
Noguki Genji
Ohba Hitoshi
Tanaka Motoaki
Watase Masahiko
Reddick J. M.
Schofer Joseph L.
Shin-Etsu Chemical Co. , Ltd.
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