Process for preparing copolymers of ethylene and vinyl esters or

Details Process for preparing copolymers of ethylene and vinyl esters or Process for preparing copolymers of ethylene and vinyl esters or

1975-08-19

1976-09-21

Kight, III, John

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

44 62, 252 56R, 252 56S, 252 56D, 526331, C08F21002

Patent

active

039818500

ABSTRACT:
Polymers of 1,000 to 50,000 and preferably of 1,000 to 2,900 number average molecular weight, comprising 3 to 40 molar proportions of ethylene per molar proportion of an ethylenically unsaturated monomer, are prepared by free radical catalysts in a solvent at temperatures of less than 130.degree.C. in order to minimize ethylene branching, for use as wax crystal modifying agents, e.g. pour depressants and flow improvers for distillate mineral oil, e.g. middle distillate fuel oil.

REFERENCES:
patent: 3029230 (1962-04-01), Strauss
patent: 3131168 (1964-04-01), Ilncykyj et al.
patent: 3250714 (1966-05-01), Ilncykyj et al.
patent: 3627838 (1971-12-01), Ilncykyj et al.
Renfrew, Polythene (1957) pp. 38-39.
Wisotsky, M. J. et al. J.A.P.S. vol. 15 pp. 1737-1742 (1971).

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