Process for graft copolymerization

Details Process for graft copolymerization Process for graft copolymerization

1980-12-15

1982-07-06

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...

C08F25502

Patent

active

043384188

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 et al.
patent: 3404091 (1968-10-01), Takashima et al.
patent: 3506574 (1970-04-01), Stambaugh et al.
patent: 4092255 (1978-05-01), Chapelet et al.
patent: 4098710 (1978-07-01), Elliott et al.
patent: 4146489 (1979-03-01), Stambaugh et al.

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