Method for controlling viscosity of lubricating oils

Compositions – Electrolytes for electrical devices

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252 32, 252 33, 252 35, 252 31, 252 41, 252 497, C01M 144

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active

039310213

ABSTRACT:
The instant invention relates to a process for controlling the viscosity of organic liquids by incorporating in said liquid a minor amount of an ionic polymer, and a cosolvent for the ionic groups of said polymer. The ionic polymer comprises a backbone which is substantially soluble in said organic liquid, and pendant ionic groups which are substantially insoluble in said organic liquid. A cosolvent is selected which will solubilize the pendant ionomeric groups and provide a reasonably homogeneous mixture of solvent, cosolvent and ionomeric polymer. The preferred compositions prepared by the method of the instant invention comprise an organic liquid having a solubility parameter of from 6 to 10.5 in combination with a sulfonated polymer containing from 0.2 up to 10.0 mole % ionic groups which has been neutralized by a basic material selected from Groups IA and IIA, IB and IIB of the Periodic Table of the Elements (and also lead, tin and antimony) and a nonvolatile alcohol or amine cosolvent. In a most preferred embodiment, the solvent is a high boiling paraffinic type oil, the polymer is a sulfonated noncrystalline olefin copolymer, comprising from 0.3 to 3.0 weight percent sodium or potassium sulfonate groups, and a C.sub.6 to C.sub.12 alcohol, or C.sub.2 --C.sub.12 glycol, or C.sub.3 -C.sub.12 triol is used as the cosolvent.

REFERENCES:
patent: 2449025 (1948-09-01), Turner
patent: 2454824 (1948-11-01), Moscowitz
patent: 2638445 (1953-05-01), Young et al.
patent: 3396136 (1968-08-01), Dickerson
patent: 3642728 (1972-02-01), Canter
patent: 3679382 (1972-07-01), Cohrs et al.

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