Process for the manufacture of halogenated polymers

Details Process for the manufacture of halogenated polymers Process for the manufacture of halogenated polymers

1984-09-17

1985-10-22

Lipman, Bernard

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

5253303, 5253316, 5253317, 5253328, 5253329, 5253331, 5253332, 5253341, 525355, 525356, 5253591, 5253592, 5253593, C08F 822

Patent

active

045489955

ABSTRACT:
In a process for the continuous halogenation of polymers by contacting polymer and halogenating agent in a continuous flow device in which means are provided for disengaging reaction by-products and unreacted halogenating agent from the reaction mixture, by deforming and disrupting the halogenated polymer surface and injecting an inert gas into the halogenated polymers immediately after reaction thereby neutralizing the product. In a preferred embodiment the process is carried out in an extruder-reactor and an optional, supplementary inert gas scrubbing zone is included. The process is amenable to saturated and unsaturated polymers.

REFERENCES:
patent: 3023191 (1962-02-01), Tegge et al.
patent: 3242148 (1966-03-01), Kinchen et al.
patent: 3510416 (1970-05-01), Vaccari et al.
patent: 3936430 (1976-02-01), Schoen et al.
patent: 4185057 (1980-01-01), Rossiter et al.

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