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ALS ANTIOXIDATIONS-SCHMIERMITTELZUSATZ VERWENDBARE DIHYDROXYARYL-HYDROXYALIPHATISCHE BORATE UND DIESE ENTHALTENDE SCHMIERMITTEL.

专利摘要

Dihydroxyaryl-hydroxyaliphatic borates have been found to be effective antioxidant additives when incorporated into various lubricating media. ......

基本信息

专利类型:
发明专利
申请/专利号:
AT1989906289T
申请日期:
1989-05-01
专利申请人:
美孚石油公司
分类号:
["C07F5/04","C10M139/00","C10N30/00","C10N30/10","C10N50/10"]
发明/设计人:
FARNG LIEHPAO OSCAR ， HORODYSKY ANDREW GENE
权利要求: 1. A reaction product which is preparable by reacting: (1) an unsubstituted or hydrocarbyl substituted hydroquinone or resorcinol of the formula: wherein R¹, R² and R³ represent a hydrogen atom or a C₁ to C₃₀ hydrocarbyl group; and one of Z¹ and Z² represents a hydroxyl group while the other represents a hydrogen atom or a C₁ to C₃₀ hydrocarbyl group; with (2) an aliphatic hydroxyester containing at least one free hydroxyl group; and (3) a borating agent.2. A product according to claim 1 wherein the aliphatic hydroxyester comprises at least one of: wherein: y represents 1 or 2; R⁵ and R⁶ each independently represent a C₃ to C₃₀ hydrocarbyl group; and R⁷ represents H or CH₂OH; and the borating agent is selected from boric acid, boric oxide, metaborates and (R¹⁰0)m B(0H)n wherein : R¹⁰ represents a C₁ to C₆ alkyl group; m represents 0 to 3; n represents 0 to 3, and m + n = 33. A product according to claim 1 or 2 wherein is hydroquinone and the aliphatic hydroxyester is wherein: R⁶ represents a C₃ to C₃₀ hydrocarbyl group; and R⁷ is H or CH₂OH.4. A product according to claim 1 or 2 wherein is resorcinol and the aliphatic hydroxyester is wherein: R⁶ represents a C₃ to C₃₀ hydrocarbyl group; and R⁷ is H or CH₂OH.5. A product according to any preceding claim wherein the aliphatic hydroxyester comprises glycerol monooleate.6. A lubricant composition comprising a major proportion of a lubricating oil or grease therefrom, and an oxidation inhibiting amount of the product of any preceding claim.7. A composition according to claim 6 wherein the lubricating oil is selected from mineral oil and synthetic oil.8. A composition according to claim 6 or 7 comprising a major proportion of grease containing hydroxycarboxylate soap thickener.9. Use of a product according to any of claims 1 to 5 to inhibit oxidation when added to a lubricant composition.10. Use of a product according to any of claims 1 to 5 to enhance friction reduction when added to a lubricant composition.