Graft copolymers and lubricants containing such as dispersant-vi

Details Graft copolymers and lubricants containing such as dispersant-vi Graft copolymers and lubricants containing such as dispersant-vi

1993-06-01

1994-03-29

Jagannathan, Vasu S.

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

Synthetic resins

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

525281, 525282, 525283, 525293, 525296, 525309, 525315, 252 50, C08F27902, C10M10714, C10M14910

Patent

active

052985652

ABSTRACT:
A graft polymer is prepared by grafting, onto a polymeric substantially saturated hydrocarbon backbone, a free-radical polymerizable vinyl nitrogen monomer, which grafting takes place with improved efficiency in the presence of minor amounts of a volatile aliphatic hydrocarbon substituted aromatic solvent capable of free-radical hydrogen atom chain transfer. The modified hydrocarbon based polymer finds utility as an additive for lubricating oils, particularly as dispersant-viscosity improvers for engine oils.

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