公开(公告)号：US11697783B2

公开(公告)日：2023-07-11

申请号：US16305993

申请日：2017-05-10

Applicant: EQUUS UK TOPCO LTD

Inventor： Ian Stuart Hobday ,  Aitziber Viadas Cienfuegos ,  John Eastwood

IPC: C10M169/04 ,  C10M145/18 ,  C10M145/22 ,  C10M145/28 ,  C10N20/02 ,  C10N20/04 ,  C10N30/06 ,  C10N40/04 ,  C10N40/08 ,  C10N40/22 ,  C10N40/25

CPC classification number: C10M169/041 ,  C10M145/18 ,  C10M145/22 ,  C10M145/28 ,  C10M2203/1025 ,  C10M2205/0285 ,  C10M2207/2835 ,  C10M2209/102 ,  C10M2209/104 ,  C10N2020/02 ,  C10N2020/04 ,  C10N2030/06 ,  C10N2040/04 ,  C10N2040/08 ,  C10N2040/22 ,  C10N2040/25 ,  C10M2209/102 ,  C10M2209/103 ,  C10M2209/102 ,  C10M2209/104 ,  C10M2203/1025 ,  C10N2020/02

Abstract: The present invention provides a non-aqueous lubricant composition comprising a base stock and 5 at least 0.02 wt % of a friction reducing additive which comprises a block co-polymer of at least one block A which is an oligo- or polyester residue of a hydroxycarboxylic acid and at least one block B which is a residue of a polyalkylene glycol. The invention also provides the use of a block co-polymer of at least one block A which is an oligo- or polyester residue of a hydroxycarboxylic acid and at least one block B which is a residue of a polyalkylene glycol to reduce the kinetic co-efficient 10 of friction in a non-aqueous lubricant composition when compared to an equivalent lubricant composition comprising no block co-polymer.