Use of comb polymers as antifatigue additives

Details Use of comb polymers as antifatigue additives Use of comb polymers as antifatigue additives

C - Chemistry, Metallurgy

10

M

C10M 145/14 (2006.01)

Patent

CA 2755057

The invention relates to the use of comb polymers comprising repeating units in the main chain which repeating units are derived from polyolefin-based macromonomers having a molecular weight of at least 500 g/mol, and repeating units which are derived from low-molecular monomers having a molecular weight of less than 500 g/mol as antifatigue additives in lubricants. The invention further relates to novel comb polymers and methods for the production thereof and to lubricating oils comprising said comb polymers.

L'invention concerne l'utilisation, comme additifs antifatigue dans des lubrifiants, de polymères en peigne qui comprennent, dans la chaîne principale, des motifs répétitifs dérivés de macromonomères, à base de polyoléfines et dont le poids moléculaire est d'au moins 500 g/mol, et des motifs répétitifs dérivés de monomères de faible poids moléculaire, inférieur à 500 g/mol. L'invention concerne également de nouveaux polymères en peigne et un procédé pour leur fabrication ainsi que des huiles lubrifiantes renfermant ces polymères en peigne.

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