Method of producing polymer solutions of polymers or copolymers

Chemistry of carbon compounds – Miscellaneous organic carbon compounds

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260 326R, 260 793M, 526 87, 526220, 526225, 526296, 526321, 526328, 526330, 526342, 526344, C08K 520, C08L 2706, C08L 2708, C08L 3220

Patent

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040136086

ABSTRACT:
A method of producing a polymer or copolymer solution of vinyl chloride series, wherein polymerization of 100 parts by weight of a monomer mixture of at least 50 weight percent of vinyl chloride and less than 50 weight percent of one or more monomers copolymerizable therewith is carried out in a solvent mixture consisting essentially of 30 to 55 weight percent water, remainder N,N-dimethyl formamide, in the presence of 0.5 to 5 parts by weight of a salt of a monomeric compound having a sulphonic acid group and using an initiator for radical polymerization.

REFERENCES:
patent: 3551396 (1970-12-01), Lanthler
patent: 3790542 (1974-02-01), Koyanagi et al.
patent: 3847886 (1974-11-01), Blunt
patent: 3883494 (1975-05-01), Winter et al.

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