Invention Grant
- Patent Title: Thermally stable subsea control hydraulic fluid compositions
- Patent Title (中): 热稳定的海底控制液压油组合物
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Application No.: US14157928Application Date: 2014-01-17
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Publication No.: US09458408B2Publication Date: 2016-10-04
- Inventor: Ian D. Smith
- Applicant: MacDermid Offshore Solutions, LLC
- Agency: Carmody Torrance Sandak & Hennessey LLP
- Main IPC: C10M173/02
- IPC: C10M173/02 ; C10M129/42 ; C10M133/38 ; C10M173/00

Abstract:
An aqueous hydraulic fluid composition comprising of one or more lubricants such as a monovalent metal salt, ammonium, or amine salt of a dicarboxylic acid, such as a C21 dicarboxylic acid is described in which the aqueous hydraulic fluid composition demonstrates increased thermal stability when exposed to elevated temperatures for a prolonged period of time while being able to tolerate the presence of 10% v/v synthetic seawater. The aqueous hydraulic fluid composition contains less than about 20% by weight (preferably none or substantially none) of an oil selected from the group consisting of mineral oils, synthetic hydrocarbon oils, and mixtures thereof. The hydraulic fluid hereof preferably comprises a cyclical or ring base tertiary amine with no hydroxyl functionality such as 1,4-dimethyl piperazine.
Public/Granted literature
- US20140135240A1 Thermally Stable Subsea Control Hydraulic Fluid Compositions Public/Granted day:2014-05-15
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