Additives for lubricating oils containing styrene and heavy C.su

Details Additives for lubricating oils containing styrene and heavy C.su Additives for lubricating oils containing styrene and heavy C.su

1982-01-08

1985-01-29

Ziegler, Jacob

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

Synthetic resins

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

252 56R, 525 85, 525 86, 525 96, 525260, 525263, 525279, 525281, C08L 3904, C08L 5100

Patent

active

044966911

ABSTRACT:
The present invention relates to additives for lubricating oils, constituted by a copolymer prepared from 35-55%, and preferably 40-50%, of substituted or non-substituted styrene monomers, and from 65-45%, and preferably 60-50% of heavy C.sub.12 -C.sub.20 alkyl esters of methacrylic acid, of which at least 80% consist of C.sub.16 -C.sub.20 alkylmethacrylates, said copolymer having a polydispersity which is as low as possible, a parameter of solubility close to that of the oil for which the additives are intended and a molecular weight of between 80,000 and 200,000 and being able, moreover, to be modified by a comonomer and vinyl compounds. One application of the invention is the formulation of lubricating oils.

REFERENCES:
patent: 3390089 (1968-06-01), Tirtiaux et al.
patent: 4073738 (1978-02-01), Ladenberger et al.
patent: 4123368 (1978-10-01), Leister et al.

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