Process for preparing chlorinated polymer or copolymer of vinyl

Details Process for preparing chlorinated polymer or copolymer of vinyl Process for preparing chlorinated polymer or copolymer of vinyl

1975-05-02

1977-09-20

Tillman, Murray

Chemistry: electrical and wave energy

Processes and products

Processes of treating materials by wave energy

260 296CM, 260 96HA, 526 17, 526 45, C08F 818

Patent

active

040495175

ABSTRACT:
A process for preparing a chlorinated polymer or copolymer of vinyl chloride which comprises varying the amount of ultraviolet rays irradiated to a unit amount of the polymer or copolymer to control the reaction rate within the range from 0.75-0.25 mole/hour/kilogram of the polymer or copolymer until the rate of substitution of chlorine attains at least 1.6 moles/kilogram of the polymer or copolymer, the polymer or copolymer being chlorinated in an aqueous suspension under irradiation of ultraviolet rays. The polymers so produced have excellent thermal stability and excellent processability.

REFERENCES:
patent: 2426080 (1947-08-01), Chapman et al.
patent: 3362896 (1968-01-01), Bier et al.
patent: 3487129 (1969-12-01), Platzer
patent: 3585117 (1971-06-01), Gresser et al.
patent: 3621078 (1971-11-01), Kitamura et al.
patent: 3700632 (1972-10-01), Beale et al.
patent: 3925337 (1975-12-01), Heiberger

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