Patent US4310769A successfully refreshed from Google Patents.
Patent EP0059461A1 successfully refreshed from Google Patents.
EP0059461A1
Expired / Lapsed
EP
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Water-based hydraulic fluids incorporating a polyether as a lubricant and corrosion inhibitor
Assignee: BASF Corp
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Filing: 1982-02-27
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Granted: —
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Expires: 2002-02-27
Abstract
Abstract In accordance with the instant invention, a water-based hydraulic fluid, havrhg improved lubricity, anti-wear and corrosion inhibition properties can be obtained by blending a heteric or block polyoxyalkylene copolymer nonionic surface-active agent with a conventional water-based hydraulic fluid composition. These heteric or block polyoxyalkylene copolymers are the reaction product of a linear or branched active hydrogen containing compound having from 1 to 6 carbon atoms with alkylene oxides having from 3 to 6 carbon atoms and an oxygen/carbon atom ratio of less than 0.4. Alternatively but advantageously, said copolymers may also be reacted with alkylene oxide having an oxygen/carbon atom ratio of greater than 0.4.
Inventors
- 👤 Ernest Jacob Labadie
- 👤 Cline Awyn Tincher
- 👤 Ellen Shirley Schwartz
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 14:34
CPC Classifications
C; C10; C10M; C10M173/00; C10M173/02; C08; C08G; C08G65/00; C08G65/02; C08G65/26; C08G65/2603; C08G65/2606; C08G65/2609; C10M2201/00; C10M2201/02; C10M2201/08; C10M2201/081; C10M2201/082; C10M2201/083; C10M2201/084; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/022; C10M2207/10; C10M2207/14; C10M2207/141; C10M2207/28; C10M2207/287; C10M2207/289; C10M2209/00; C10M2209/02; C10M2209/04; C10M2209/06; C10M2209/062; C10M2209/08; C10M2209/084; C10M2209/086; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/107; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10M2215/06; C10M2215/064; C10M2215/08; C10M2215/082; C10M2215/14; C10M2215/22; C10M2215/221; C10M2215/223; C10M2215/224; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/26; C10M2215/28; C10M2215/30; C10M2217/00; C10M2217/02; C10M2217/028; C10M2217/06; C10M2219/00; C10M2219/10; C10M2219/102; C10M2219/104; C10M2219/106; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10M2223/045; C10M2225/00; C10M2225/02; C10N; C10N2010/00; C10N2010/02; C10N2010/10; C10N2010/12; C10N2030/00; C10N2030/12; C10N2040/00; C10N2040/08; C10N2040/20; C10N2050/00; C10N2050/01; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
101 words
A hydraulic fluid composition containing a heteric or block polyoxyalkylene copolymer which is the reaction product of a. linear or branched active hydrogen containing compound having from 1 to 6 carbon atoms with alkylene oxides having from 3 to 6 carbon atoms and an oxygen/carbon atom ratio of less than 0.4, and optionally alkylene oxides having an oxygen/carbon atom ratio greater than 0.4, said copolymer having a molecular weight of the 3 to 6 carbon atom oxyalkylene groups from about 950 to 3500 and containing about 65 to 100 percent by weight of the 3 to 6 carbon atom oxyalkylene groups.
Claim 2
Dependent Claim
101 words
A hydraulic fluid composition containing a heteric or block polyoxyalkylene copolymer which is the reaction product of a. linear or branched active hydrogen containing compound having from 1 to 6 carbon atoms with alkylene oxides having from 3 to 6 carbon atoms and an oxygen/carbon atom ratio of less than 0.4, and optionally alkylene oxides having an oxygen/carbon atom ratio greater than 0.4, said copolymer having a molecular weight of the 3 to 6 carbon atom oxyalkylene groups from about 950 to 3500 and containing about 65 to 100 percent by weight of the 3 to 6 carbon atom oxyalkylene groups.
Claim 3
Dependent Claim
123 words
A hydraulic fluid composition containing a nonionic polyoxyalkylene block copolymer which is a cogeneric mixture of conjugated polyoxyalkylene compounds containing in their structure the residue of an active hydrogen containing compound having from 1 to 6 carbon atoms and at least one hydrophobic chain of 6 carbon atom oxyalkylene groups in which the oxygen/carbon atom ratio does not exeed 0.4 and optionally, in addition, at least one hydrophilic chain of oxyalkylene groups in which the oxygen/carbon atom ratio is greater than 0.4, and wherein the molecular weight of the 3 to 6 carbon atom oxyalkylene groups is from about 950 to 3500 and the copolymer contains from about 65 to 100 percent by weight of the 3 to 4 carbon atom oxyalkylene groups.
Claim 4
Dependent Claim
123 words
A hydraulic fluid composition containing a nonionic polyoxyalkylene block copolymer which is a cogeneric mixture of conjugated polyoxyalkylene compounds containing in their structure the residue of an active hydrogen containing compound having from 1 to 6 carbon atoms and at least one hydrophobic chain of 6 carbon atom oxyalkylene groups in which the oxygen/carbon atom ratio does not exeed 0.4 and optionally, in addition, at least one hydrophilic chain of oxyalkylene groups in which the oxygen/carbon atom ratio is greater than 0.4, and wherein the molecular weight of the 3 to 6 carbon atom oxyalkylene groups is from about 950 to 3500 and the copolymer contains from about 65 to 100 percent by weight of the 3 to 4 carbon atom oxyalkylene groups.
Claim 5
Dependent Claim
32 words
The hydraulic fluid of claim 2 wherein said fluid is a concentrate in which the amount of said conjugated polyoxyalkylene compounds is at least about 0.5 percent by weight of the concentrate.
Claim 6
Dependent Claim
81 words
The concentrate of claim 3 wherein said nonionic copolymer corresponds to the formula wherein Y is the residue of an organic compound having from about 1 to 6 carbon atoms and containing x reactive hydrogen atoms in which x has a value of at least one, n has a value such that the oxypropylene content of the molecule is from about 65 to 100 weight percent and the total molecular weight of the polyoxypropylene groups is from about 950 to 3500.
Claim 7
Dependent Claim
158 words
The composition of claim 3 wherein said concentrate includes a phosphate ester or salt thereof selected from the group consisting of and mixtures thereof wherein ethylene oxide groups are represented by EO; R is selected from the group consisting of linear or branched chain alkyl groups wherein said alkyl groups have about 6 to 30 carbon atoms, preferably about 8 to 20 carbon atoms, or alkylaryl groups wherein the alkyl groups have about 6 to 30 carbon atoms, preferably about 8 to 18 carbon atoms, and X is selected from the group consisting of hydrogen, alkali or alkaline earth metal, the residue of ammonia or an amine and mixtures thereof, and n is a number from 1 to 50; an alkyldialkanolamide of the formula wherein R1 is alkyl of about 4 to about 54 carbon atoms and R 2 is alkyl of about 2 to about 6 carbon atoms, a metal deactivator; and an additional conventional corrosion inhibitor.
References Cited (Backward Citations)
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