Copolymers of vinyl chloride and 2-hydroxypropyl-alkyl maleate

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...

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260 336R, 260 37R, 526345, C08F 224, C08F21406

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active

039693287

ABSTRACT:
Copolymers of vinyl chloride and 2-hydroxypropyl-alkyl maleate and/or fumarate consisting of a copolymer with from 65% to 95% by weight of vinyl chloride monomer units and from 5% to 35% by weight of 2-hydroxypropyl-alkyl maleate and/or fumarate monomer units, where alkyl has from 8 to 18 carbon atoms and is preferably branched, optionally with up to 15% of a dialkyl maleate and/or fumarate monomer units, where each alkyl has from 8 to 18 carbon atoms, said copolymer having a K-value of from 20 to 50 measured in cyclohexanone, as well as the method of producing the same by continuous addition of the monomer mix to an aqueous emulsion.

REFERENCES:
patent: 2689242 (1954-09-01), Lucht
patent: 3260704 (1966-07-01), Slocombe
patent: 3392137 (1968-07-01), Slocombe
patent: 3635914 (1972-01-01), Daniels et al.

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