Manufacture of vinylpyrrolidone polymers

Details Manufacture of vinylpyrrolidone polymers Manufacture of vinylpyrrolidone polymers

1975-11-17

1977-10-11

Wong, Jr., Harry

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymerizing in two or more physically distinct zones

260 302, 260895, 424 80, 526 18, 526 89, 526204, 526210, 526258, 526264, C08F 2610

Patent

active

040536963

ABSTRACT:
A process for the continuous manufacture of vinylpyrrolidone polymers of low K values, wherein vinylpyrrolidone, with or without comonomers copolymerizable therewith, is polymerized in organic solvents at elevated temperatures and superatmospheric pressures in the presence of a source of free radicals.

REFERENCES:
patent: 3171784 (1965-03-01), Witwer
patent: 3222329 (1965-12-01), Grosser et al.
patent: 3296231 (1967-01-01), Resz et al.
patent: 3459720 (1969-08-01), Grosser et al.
patent: 3806317 (1974-04-01), Viout et al.

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