Process for graft copolymerization

Details Process for graft copolymerization Process for graft copolymerization

1979-02-01

1981-07-28

Michl, Paul R.

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

Synthetic resins

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

252 515R, 252 515A, C08F25502

Patent

active

042810817

ABSTRACT:
What is disclosed are the method of making a lubricating-oil additive which improves the viscosity index and has a dispersing and detergent action, which method comprises graft copolymerizing, onto an oil-soluble base polymer, from 0.5 to 10 parts of a polymerizable lactam together with 0.1 to 3 parts of a polymerizable N-heterocyclic compound, said parts being by weight of said base polymer, and the lubricating-oil additives so produced.

REFERENCES:
patent: 3067163 (1962-12-01), Bauer
patent: 3089832 (1963-05-01), Black
patent: 4098710 (1978-07-01), Elliott
patent: 4146489 (1979-03-01), Stambaugh

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