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OSP-containing composition for automotive brake fluid

A vehicle braking and composition technology, which is applied in lubricating compositions, base materials, petroleum industry, etc., and can solve the problems of foreign matter, deterioration of brake fluid physical properties, boric acid precipitation, etc.

Inactive Publication Date: 2016-06-22
HYUNDAI MOTOR CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when moisture comes into contact with brake fluid, the borate compound in it may be hydrolyzed and boric acid may precipitate, which deteriorates the physical properties of the brake fluid and generates foreign matter

Method used

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  • OSP-containing composition for automotive brake fluid
  • OSP-containing composition for automotive brake fluid
  • OSP-containing composition for automotive brake fluid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～6 and comparative example 1 and 2

[0044] Examples 1-6 and Comparative Examples 1 and 2: Preparation of DOT-4-based composition for brake fluid

[0045] A DOT-4-based composition for brake fluid was prepared using ingredients having content ratios shown in Table 1 below.

[0046] [Table 1]

[0047]

[0048] OSP-32:Ucon TM OSP-32 lubricant (DowChemicalComp.)

[0049] Table 1 shows compositions for brake fluids in which OSP was added to compositions for DOT-4 brake fluids used according to the prior art and the OSP content was changed. In order to increase the content of OSP, as shown in Table 1, respectively reduce the amount of polyethylene glycol butyl ether, triethylene glycol methyl ether and borate compound in the mixed solvent, and the total reduction is consistent with the OSP increase. In addition, Comparative Examples 1 and 2 are compositions for DOT-4 brake fluids according to the prior art without adding OSP, so that Comparative Example 1 is a composition not containing polyalkylene glycol, an...

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Abstract

Disclosed is a composition of brake fluid for a vehicle. The composition includes an amount of about 30 to 60 wt % of a boric ester compound; an amount of about 30 to 60 wt % of alkylene glycol alkyl ether; and an amount of about 0.05 to 10 wt % of oil soluble polyalkylene glycol (OSP), based on the total weight of the composition. Accordingly, the OSP-containing composition for brake fluid may decreases a moisture absorption amount of the brake fluid in the air and maintain a high boiling point of the brake fluid for a long period of time, thereby extending a period for changing brake fluid and improving corrosion prevention performance, metal wear prevention performance, and an operation of a master cylinder.

Description

[0001] Cross References to Related Applications [0002] This application is based on and claims the benefit of priority from Korean Patent Application No. 10-2014-0181772 filed with the Korean Intellectual Property Office on December 16, 2014, the disclosure of which is incorporated herein by reference in its entirety. technical field [0003] The present invention relates to compositions for use in vehicle brake fluids. The composition can reduce the water absorption amount of the brake fluid in the air, and keep the high boiling point of the brake fluid for a long time, thereby prolonging the time for changing the brake fluid, and improving the anti-corrosion performance and anti-metal wear performance. Specifically, the composition contains oil-soluble polyalkylene glycol (OSP) in a predetermined quantitative ratio with respect to a mixed solvent containing boric acid ester and alkylene glycol alkyl ether in a predetermined quantitative ratio. Background technique [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/04C10M145/28C10N30/06C10N30/12C10N40/08
CPCC10M111/04C10M2207/026C10M2207/046C10M2209/1045C10M2209/1075C10M2209/1085C10M2215/04C10M2215/042C10M2215/223C10M2219/09C10M2227/061C10N2040/08C10M145/00C10M145/02C10M145/08C10M145/10C10M145/12C10M145/16C10M145/22C10M145/26C10M145/28C10M145/32C10M145/38
Inventor 李嘉恩李承昱朴载润赵昌烈李洪基
Owner HYUNDAI MOTOR CO LTD
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