Grafted ethylene polymers usable more especially as additives fo

Details Grafted ethylene polymers usable more especially as additives fo Grafted ethylene polymers usable more especially as additives fo

1985-10-23

1986-08-26

Seccuro, Carman J.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524531, 525285, 525301, 525304, C08L 5100, C08F26504, C08F26304

Patent

active

046084118

ABSTRACT:
The present invention provides grafted ethylene copolymers usable more especially as additives for inhibiting the depositions in crude oils.
Said copolymer being formed of ethylene and at least one monomer with ethylenic unsaturation, chosen from vinyl esters of C.sub.2 to C.sub.18 monocarboxylic acids, the alkyl esters in the C.sub.1 to C.sub.12 range of unsaturated monocarboxylic acids from the C.sub.3 to C.sub.12 range and the .alpha., .beta.-unsaturated dicarboxylic compounds, on which are fixed the grafts of a homo or copolymer of an .alpha., .beta.-unsaturated monocarboxylic acid ester with at least one alkanol of a chain length equal to or greater than C.sub.12 and at least 20% of which is of a chain length equal to or greater than C.sub.22. Such copolymers may be used more especially as additives for inhibiting the deposition of paraffins and for improving the flow properties of the crude oils.

REFERENCES:
patent: 3304261 (1967-02-01), Ilnckyj et al.
patent: 3341309 (1967-09-01), Ilnyckyj
patent: 3749756 (1973-07-01), Kasaka et al.
patent: 4094927 (1978-06-01), Harrop et al.

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