Compositions – Electrolytes for electrical devices
Patent
1984-05-14
1985-07-16
Niebling, John F.
Compositions
Electrolytes for electrical devices
252 475, 252 484, C10M 140, C10M 334
Patent
active
045295271
ABSTRACT:
The instant invention relates to an improved process for controlling the viscosity of organic liquids at low temperatures 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, wherein such ionic polymer or terpolymer is formed from at least one acrylate or methacrylate monomer having at least eight carbon atoms and a minor portion of a sulfonate-containing monomer. 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 co- or terpolymer containing from 0.2 up to 10.0 mole percent ionic groups which has been neutralized by a basic material selected from Group IA, IIA, IB and IIB of the Periodic Table of the Elements (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 metal sulfonate containing acrylate or methacrylate 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: 3396136 (1968-08-01), Dickerson
patent: 3856685 (1974-12-01), Mori
patent: 3931021 (1976-01-01), Lundberg
Lundberg Robert D.
McGrath James E.
Phillips Robert R.
Exxon Research and Engineering Co.
Nanfeldt Richard E.
Niebling John F.
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