Invention Grant
- Patent Title: Hydraulic fluid composition
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Application No.: US16301271Application Date: 2017-04-19
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Publication No.: US11261398B2Publication Date: 2022-03-01
- Inventor: Daniel J. Knapton , David Cressey , Daniel C. Visger
- Applicant: The Lubrizol Corporation
- Applicant Address: US OH Wickliffe
- Assignee: The Lubrizol Corporation
- Current Assignee: The Lubrizol Corporation
- Current Assignee Address: US OH Wickliffe
- Agency: Fay Sharpe LLP
- International Application: PCT/US2017/028306 WO 20170419
- International Announcement: WO2017/200688 WO 20171123
- Main IPC: C10M149/06
- IPC: C10M149/06 ; C10N30/04 ; C10N30/10 ; C10N30/12 ; C10N40/08 ; C10N30/00
Abstract:
A hydraulic fluid includes an oil of lubricating viscosity and at least 2 wt. % of an ester of a carboxy group-containing interpolymer comprising units derived from a vinyl aromatic monomer and units derived from a carboxylic acid monomer. The interpolymer also contains nitrogen functionality. The hydraulic fluid is at least substantially free of polyacrylates and polymethacrylates.
Public/Granted literature
- US20200318028A1 HYDRAULIC FLUID COMPOSITION Public/Granted day:2020-10-08
Information query
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