Compositions – Electrolytes for electrical devices
Patent
1980-01-29
1981-09-22
Gantz, Delbert E.
Compositions
Electrolytes for electrical devices
252 56R, 585 3, 585 12, C10M 126, C10M 118, C10M 320, C10M 312
Patent
active
042909252
ABSTRACT:
What is disclosed is a concentrated polymer emulsion useful as a lubricating oil additive for improving the viscosity index thereof, said emulsion comprising:
(1) a dispersed phase of an olefinic copolymer having a molecular weight complementary with respect to the thickening effect desired;
(2) a dispersing phase of a polymer predominantly comprising at least one member selected from the group consisting of acrylate ester and methacrylate ester monomers;
(3) a vehicle which is a good solvent for the esters in said dispersing phase and a substantially less good solvent for the olefinic copolymer by virtue of the esters dissolved in said vehicle; and
(4) an emulsifier, stabilizing phase distribution, which is a member selected from the group consisting of graft copolymers and block copolymers formed from olefinic monomers and at least one member selected from the group consisting of acrylate ester and methacrylate ester monomers.
REFERENCES:
patent: 2992987 (1961-07-01), Fields
patent: 3509056 (1970-04-01), Shepherd
patent: 3513096 (1970-05-01), Brownawell et al.
patent: 3522180 (1970-07-01), Sweeney et al.
patent: 3551336 (1969-06-01), Jacobsson et al.
patent: 3681302 (1972-08-01), Sweeney
patent: 3790480 (1974-02-01), Campbell et al.
Japanese Patent Application 50-111,138 (German translation) Sep. 1, 1975.
Benda Rainer
Jost Heinz
Knoell Helmuth
Pennewiss Horst
Gantz Delbert E.
Rohm GmbH
Vaughn Irving
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