Polyolefin graft copolymers

Details Polyolefin graft copolymers Polyolefin graft copolymers

1977-10-18

1979-03-27

Gantz, Delbert E.

Compositions

Electrolytes for electrical devices

44 62, 44 63, 252 515A, 252 515R, 260878R, C10M 132, C10M 326, C10L 114, C08L 2300

Patent

active

041464893

ABSTRACT:
Graft copolymers wherein the backbone polymer is a rubbery, oil soluble ethylene-propylene copolymer or ethylene-propylene diene modified terpolymer and the graft monomer is a C-vinylpyridine or N-vinylpyrrolidone impart dispersant properties to hydrocarbon fuels and combined viscosity index improvement and dispersant properties to lubricating oils for internal combustion engines. The graft copolymers are prepared by intimate admixture of backbone polymer, graft monomer and free radical initiator at a temperature below initiation temperature, followed by a temperature increase to or above initiation temperature, thus providing a product containing little or no byproduct.

REFERENCES:
patent: 2838456 (1958-06-01), Banes et al.
patent: 2901458 (1959-08-01), Banes et al.
patent: 3089832 (1963-05-01), Black et al.
patent: 3551336 (1970-12-01), Jacobson et al.
patent: 3687849 (1972-08-01), Abbott
patent: 3929800 (1975-12-01), Horowitz
patent: 4092255 (1978-05-01), Chapelet et al.

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