Use of comb polymers for improving scuffing load capacity

Details Use of comb polymers for improving scuffing load capacity Use of comb polymers for improving scuffing load capacity

C - Chemistry, Metallurgy

10

M

C10M 145/14 (2006.01)

Patent

CA 2755054

The present invention relates to the use of comb polymers comprising, in the main chain, repeat units derived from polyolefin-based macromonomers with a molecular weight of at least 500 g/mol, and repeat units derived from low molecular weight monomers with a molecular weight less than 500 g/mol, for improving the load-bearing capacity of hydraulic fluids. Furthermore, the present invention describes new hydraulic fluids.

L'invention concerne l'utilisation de polymères en peigne qui comprennent, dans la chaîne principale, des motifs répétitifs dérivés de macromonomères à base de polyoléfines 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, pour améliorer la capacité de charge admissible de grippage propre à des fluides hydrauliques. L'invention concerne également de nouveaux fluides hydrauliques.

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