[특허]Alkylphosphorofluoridothioates having low wear volume and methods for synthesizing and using same

Alkylphosphorofluoridothioates having low wear volume and methods for synthesizing and using same 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	C07F-009/20 C10M-137/10
출원번호	US-0168478 (2011-06-24)
등록번호	US-8791056 (2014-07-29)
발명자 / 주소	Chen, Xin Aswath, Pranesh B. Elsenbaumer, Ronald L.
출원인 / 주소	Board of Regents, The University of Texas System
대리인 / 주소	Parks IP Law LLC
인용정보	피인용 횟수 : 0 인용 특허 : 83

초록

Alkylphosphorofluoridothioates containing alkyl groups of greater than four carbons which exhibit significantly lower wear volume compared to ZDDP, methods of making same with high yields, and methods of using same as lubricant additives.

대표청구항 ▼

1. A method for synthesizing an alkylphosphorofluoridothioate having desired alkyl groups, comprising the steps: i) reacting phosphorus pentasulfide with alcohol having the desired alkyl groups to form an O,O-dialkyl dithiophosphoric acid; andii) reacting the O,O-dialkyl dithiophosphoric acid with thionyl fluoride (SOF2)so that one of the thio groups is replaced by a fluoride to yield the alkylphosphorofluoridothioate. 2. A pure alkylphosphorofluoridothioate having the structure wherein R1 and R2 are the same or different and are alkyl groups with between 5 and 40 carbons. 3. The alkylphosphorofluoridothioate of claim 2 wherein R1 and R2 are alkyl groups with between 5 and 22 carbons. 4. A lubricant additive comprising a pure alkylphosphorofluoridothioate having the structure wherein R1 and R2 are the same or different and are alkyl groups with between 5 and 40 carbons. 5. The lubricant additive of claim 4, wherein R1 and R2 are alkyl groups with between 5 and 22 carbons. 6. A lubricant comprising a lubricant base and a lubricant additive of claim 4. 7. The lubricant of claim 6 further comprising one or more additional alkylphosphorofluoridothioates having the structure wherein R1 and R2 are the same or different and are alkyl groups with between 5 and 40 carbons. 8. The lubricant of claim 6 wherein R1 and R2 are alkyl groups with between 5 and 22 carbons. 9. The lubricant of claim 6 wherein the lubricant exhibits a wear volume less than a similarly formulated lubricant containing ZDDP, normalized for the same phosphorus amount. 10. The lubricant of claim 6 further comprising additional additives selected from additional antiwear compounds, detergents, dispersants, antioxidants, pour point depressants, viscosity modifiers, corrosion inhibitors, and combinations thereof. 11. The lubricant of claim 10, wherein the additional antiwear compound is selected from organophosphates such as zinc dialkyldithiophosphate (ZDDP), organofluorine compounds such as polytetrafluoroethylene (PTFE), ashless phosphates, ashless thiophosphates, and combinations thereof. 12. The lubricant of claim 11 wherein the alkylphosphorofluoridothioate comprises between 5 and 50% of the total antiwear compounds in the lubricant. 13. The lubricant of claim 8 wherein the lubricant is a motor oil, wherein the lubricant base is a base oil, and wherein the amount of alkylphosphorofluoridothioate in the lubricant is the amount that provides a phosphorous concentration of from about 0.01 to 0.15 wt % phosphorous. 14. The lubricant of claim 6 wherein the lubricant is a grease, wherein the lubricant base is a mixture of mineral oil and soap thickener, and wherein the amount of alkylphosphorofluoridothioate in the lubricant is the amount that provides a phosphorous concentration of from about 0.01 to 0.5 wt % phosphorous. 15. The lubricant of claim 6 wherein the lubricant is a gear oil or transmission oil and wherein the amount of alkylphosphorofluoridothioate in the lubricant is the amount that provides a phosphorous concentration of from about 0.01 to 0.3 wt % phosphorous. 16. The lubricant of claim 7 comprising at least two alkylphosphorofluoridothioates having different temperature decomposition profiles. 17. A lubricant additive comprising a pure alkylphosphorofluoridothioate having the structure wherein R1 and R2 are the same or different and are alkyl groups with between 5 and 22 carbons andwherein the additive provides lubricant having a lower wear volume than a similarly formulated lubricant containing ZDDP at an equivalent weight percentage of phosphorus.

이 특허에 인용된 특허 (83)

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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연합인증

Alkylphosphorofluoridothioates having low wear volume and methods for synthesizing and using same 원문보기

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Alkylphosphorofluoridothioates having low wear volume and methods for synthesizing and using same 원문보기

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