Simultaneously chlorinating and grafting a cure site onto polyet

Details Simultaneously chlorinating and grafting a cure site onto polyet Simultaneously chlorinating and grafting a cure site onto polyet

1983-12-15

1984-10-16

Schofer, Joseph L.

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

Synthetic resins

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

525301, 525356, C08F 846

Patent

active

044776330

ABSTRACT:
A chlorinated polyethylene elastomer is made by mixing polyethylene with water to form an aqueous suspension of the polyethylene and simultaneously chlorinating and grafting a cure site on the polyethylene by mixing and heating the aqueous suspension containing a free radical initiator, gaseous chlorine and about 0.1-1.5 moles per kg of polyethylene of an alkyl or alkylaryl monester of butenedioic acid having the formulas ##STR1## or mixtures thereof, where R.sub.1 is an alkyl or alkylaryl group having from about 8-20 carbon atoms and R.sub.2 and R.sub.3 are hydrogen, chlorine or an alkyl group having from about 1-4 carbon atoms.

REFERENCES:
patent: 3563974 (1971-02-01), Eckardt et al.
patent: 3594451 (1971-07-01), Keown
patent: 3646165 (1972-02-01), Favie et al.
patent: 3928497 (1975-12-01), Ohmori et al.
patent: 3932368 (1976-01-01), McConnell et al.
patent: 4376855 (1983-03-01), Ames

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