Process for the preparation of polyolefin/acrylonitrile coployme

Details Process for the preparation of polyolefin/acrylonitrile coployme Process for the preparation of polyolefin/acrylonitrile coployme

1991-10-23

1994-02-08

Schofer, Joseph L.

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

Synthetic resins

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

44384, 44393, 44394, 252 50, 525418, 528362, 528363, C08F 830

Patent

active

052849244

ABSTRACT:
Terpolymers of polyolefin/acrylic acid or substituted acrylic acid/acrylonitrile are prepared by combining a polyolefin/acrylic acid or substituted acrylic acid copolymer with at least one dinitrile to form a mixture and reacting the mixture at a temperature of at least 200.degree. C. for a time sufficient to form the terpolymer. Copolymers of polyolefin/acrylonitrile are obtained when the reaction is carried to completion. The total reaction masses obtained comprising terpolymer or copolymer, cyclic imide, solvent, when used and any unreacted dinitrile find use as pour point depressants in heavy hydrocarbon oils.

REFERENCES:
patent: 2377795 (1945-06-01), Loder
patent: 3841850 (1974-10-01), Aaron et al.
patent: 4926582 (1990-05-01), Motz
"Nitrile Synthesis Via the Acid-Nitrile Exchange Reaction", by David A. Klein, J. Org. Chem., vol. 36, No. 20, 1971, pp. 3050-3051.

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