Ashless dispersant polymethacrylate polymers

Details Ashless dispersant polymethacrylate polymers Ashless dispersant polymethacrylate polymers

C - Chemistry, Metallurgy

08

F

C08F 220/10 (2006.01) C08F 220/18 (2006.01) C10M 145/14 (2006.01)

Patent

CA 2090200

A novel polymer useful as an ashless dispersant additive which provides a combination of dispersancy, good cold cranking engine startup, low-temperature viscosity properties and neutral behavior towards fluoropolymer engine seal materials is produced by polymerizing several alkyl methacrylates with a hydroxyalkyl methacrylate while controlling the relative weight ratio of the component monomers to obtain an appropriate carbon atom content in the alkyl side chain portion of the methacrylate backbone polymer to achieve desired additive solubility properties.

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