C - Chemistry – Metallurgy – 10 – M
Patent
C - Chemistry, Metallurgy
10
M
253/114, 253/25
C10M 159/20 (2006.01)
Patent
CA 1092088
ABSTRACT This invention relates to colloidal dispersions of an alkaline earth metal salt in an oil-soluble acrylic polymer which is polymerized from a monomer system of at least one alkyl or hetero-substituted alkyl ester of an acrylic monomer selected from the group consisting of methacrylates and acrylates represented by the formula: Image (I) wherein R1 is a -CH3 or -H radical and R2 is selected from the group consisting of Cl-30 alkyl and hetero- substituted alkyl radicals. This invention also relates to colloidal dispersions as described hereinabove where- in the monomer system further includes at least one non- acrylic polymerizable ethylenically unsaturated nitrogen- containing compound. Preferred polymerizable ethylen- ically unsaturated nitrogen-containing compounds are those selected from the group consisting of 2- and 4- vinylpyridines and N-vinyl-2-pyrrolidinones. Further, this invention relates to finished lubrication oil compositions wherein the metal salt-polymer dispersions are incorporated into lubricating oil compositions, either alone or in combination with other oil additives, whereby the metal salt-polymer colloidal dispersions impart improved properties to the finished lubricating oil compositions.
298684
Leister Norman A.
Neuman Andrew
Gowling Lafleur Henderson Llp
Rohm And Haas Company
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