Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1993-10-22
1995-04-11
Zitomer, Fred
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, 525377, 525418, 528362, 528363, 252 50, C08F 830
Patent
active
054059160
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 et al.
"Nitrile Synthesis Via the Acid-Nitrile Exchange Reaction", by David A. Klein, J. Org. Chem., vol. 36, No. 20, 1971, pp. 3050-3051.
Pober Kenneth W.
Starks Charles M.
Conoco Inc.
Schupbach C. R.
Zitomer Fred
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