Additive as component of mineral oil compositions

Details Additive as component of mineral oil compositions Additive as component of mineral oil compositions

2011-08-02

2011-08-02

McAvoy, Ellen M (Department: 1775)

Fuel and related compositions

Liquid fuels

Containing organic -c

C044S391000, C044S393000, C508S469000, C508S470000, C508S471000, C508S472000

Reexamination Certificate

active

07988748

ABSTRACT:
Mineral oil compositions with trace portions of additives contain as additive a comb polymer containing ester linkages, either based ona) ethylene-vinylester copolymers modified by hydroxy groups or glycidyl groups with molecular mass weight averages from 3000 to 50000 and an ethylene portion of 50 to 90 mass %, andb) partially imidated and/or partially esterified maleic anhydride copolymers,wherein in the comb polymer based on a) and b) the modified ethylene-vinylester copolymer component is connected by means of ester linkages to the partially imidated and/or partially esterified maleic anhydride copolymer component,or a comb polymer containing ester linkages based onc) ethylene-vinylester copolymers modified by acid and/or acid anhydride groups with molecular mass weight averages from 3000 to 50000 and an ethylene portion of 50 to 90 mass %, andd) polyalcohols partially esterified with C12-C40-monocarboxylic acidswherein in the comb polymer based on c) and d) the ethylene-vinylester copolymer component modified by acid and/or acid anhydride groups is connected by means of ester linkages with the polyalcohol component partially esterified with C12-C40-monocarboxylic acids.The mineral oil compositions are suitable as flowable media to be transported at low temperatures and as mineral oil fuels with high lubricity and flowability.

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