The Lubrizol Corporation

David M Nickerson

Elizabeth A Schiferl

Kevin J Hughes

James H Bush

Jayasooriya Sujith Perera

Rochelle L Kovach

William R S Barton

Kamalakumari Kunchithapatham Salem

Tina M Adams

Dennis M Dishong

Michael E Huston

Paul Simon O'Hora

Sona Sivakova

Alonzo Smith

Sujith Perera

Donald J Knobloch

William Rs Barton

Christopher H Joniec

Kamalakumari K Salem

William RS Barton

There is disclosed an antifoam component which includes at least one poly(acrylate) copolymer for use in a fuel. Poly(acrylate) polymers prepared by polymerizing a (meth)acrylate monomer comprising Cto Calkyl esters of (meth)acrylic acid ('multifunctional monomer') are also disclosed. Other poly(acrylate) polymers prepared by polymerizing (i) a (meth)acrylate monomer comprising Cto Calkyl esters of (meth)acrylic acid (“solubility monomer”); (ii) a (meth)acrylate monomer comprising Cto Calkyl esters of (meth)acrylic acid (“surface tension monomer”); and (iii) optionally at least one additional monomer comprising a solubility monomer, a surface tension monomer, a monomer comprising Cto Calkyl esters of (meth)acrylic acid (“multifunctional monomer”), or combinations thereof are also disclosed.

Polyacrylate antifoam components for use in fuels

There is disclosed an antifoam component for a mechanical device which includes a fluorinated poly(acrylate) copolymer. The antifoam component has improved foam performance and thermal stability in finished fluids, such as driveline fluids.

Fluorinated polyacrylate antifoam components for lubricating compositions

There is disclosed an antifoam component which includes at least one acrylamide polymer for use in a diesel fuel. Acrylamide polymers prepared by polymerizing a (meth)acrylamide monomer to yield a homopolymer or, alternatively, the acrylamide polymer may be prepared by polymerizing a (meth)acrylamide monomer and a (meth)acrylate monomer to yield a heteropolymer.

Polyacrylamide antifoam components for use in diesel fuels

There is disclosed an antifoam component for a mechanical device which includes a poly(acrylate) copolymer. The antifoam component has improved foam performance in finished fluids utilizing dibutyl hydrogen phosphite compounds, such as driveline fluids. A lubricating composition comprising a) at least one oil of lubricating viscosity; and b) an antifoam component comprising a poly(acrylate) copolymer. The poly(acrylate) copolymer, b) may include (i) from about 30 wt % up to about 99 wt % of a (meth)acrylate monomer having Cto Calkyl esters of (meth)acrylic acid; and (ii) from about 1 wt % up to about 70 wt % of a fluorinated (meth)acrylate monomer.

Fluorinated polyacrylates antifoams in ultra-low viscosity (&#x3c;5 CST) finished fluids

A lubricant composition of an oil of lubricating viscosity, a grafted copolymer viscosity modifier that is an ashless condensation reaction product of an olefin polymer, having a number average molecular weight of about 1000 to about 10,000, comprising carboxylic acid or equivalent functionality grafted onto the polymer backbone, with a monoamine or a polyamine often having a single primary amino group, which exhibits good dispersancy and viscometric performance in a driveline device.

Nitrogen-functionalized olefin polymers for driveline lubricants

There is disclosed an antifoam component which includes at least one poly(acrylate) copolymer for use in a diesel fuel. Poly(acrylate) polymers prepared by polymerizing a (meth)acrylate monomer comprising Cto Calkyl esters of (meth)acrylic acid ('multifunctional monomer') are also disclosed. Other poly(acrylate) polymers prepared by polymerizing (i) a (meth)acrylate monomer comprising Cto Calkyl esters of (meth)acrylic acid ('solubility monomer'); (ii) a (meth)acrylate monomer comprising Cto Calkyl esters of (meth)acrylic acid (&#x201c;surface tension monomer&#x201d;); and (iii) optionally at least one additional monomer comprising a solubility monomer, a surface tension monomer, a monomer comprising Cto Calkyl esters of (meth)acrylic acid (&#x201c;multifunctional monomer&#x201d;), or combinations thereof are also disclosed.

Polyacrylate antifoam components for use in diesel fuels

Growing community of inventors

Concord Township, OH, United States of America

David M Nickerson