Water-glycol hydraulic fluid

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12187977
APP PUB NO 20230383214A1
SERIAL NO

18248697

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Abstract

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This invention provides a water-glycol hydraulic fluid comprises from 0.2 to 0.6% by mass of a dimer acid as a fatty acid lubricant, and more than 0.10% by mass and 0.20% by mass or less of a phosphoric acid ester of Formula (1), wherein the sum of the dimer acid and the phosphoric acid ester is more than 0.35% by mass wherein R1 and R2 may be the same or different, each representing a hydrogen atom or a hydrocarbon group having from 1 to 30 carbon atoms, R3 represents a hydrocarbon group having from 1 to 20 carbon atoms, R4 represents a hydrogen atom or a hydrocarbon group having from 1 to 30 carbon atoms, and X1, X2, X3 and X4 may be the same or different, each representing an oxygen atom or a sulfur atom.

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Patent Owner(s)

  • SHELL USA, INC.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kaneko, Hiroshi Minato-ku, JP 118 822

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