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특허 상세정보

Hydraulic fluids

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) C10M-014/110   
미국특허분류(USC) 508/287 ; 508/373 ; 508/375 ; 508/376 ; 508/551 ; 252/078.5
출원번호 US-0756923 (1996-12-02)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Rainear
인용정보 피인용 횟수 : 17  인용 특허 : 0
초록

Hydraulic fluid compositions and additive concentrates are described that provide improved wet filtrability. The additive components comprise a mixture formed from at least (a) a zinc dihydrocarbyl dithiophosphate anti-wear agent, (b) a succinimide compound, and optionally (c) one or more alkali metal or alkaline earth metal-containing detergents.

대표
청구항

[ I claim:] [1.] A hydraulic fluid comprising: a major amount of (i) a hydraulic base oil and (ii) a minor amount of an additive composition comprising(a) a hydraulic grade zinc dihydrocarbyl dithiophosphate anti-wear agent having a TBN of at least 10 mgKOH/g;(b) from 0.03 to less than 1% by weight of a compound of formula: [ STR 2 ] in which Z is a group R.sub.1 R.sub.2 CH-- in which R.sub.1 and R.sub.2 are each independently straight- or branched-chained hydrocarbon groups containing from 1 to 34 carbon atoms and the total number of carbon atoms in the...

이 특허를 인용한 특허 피인용횟수: 17

  1. Chen, Xin; Aswath, Pranesh B.; Elsenbaumer, Ronald L.. Alkylphosphorofluoridothioates having low wear volume and methods for synthesizing and using same. USP2014078791056.
  2. George,Herman F.; Burrington,James D.; Pudelski,John K.; Roski,James P.; Martin,John R.; Ineman,Jennifer M.; Garvin,Gary A.; van Lier,Frank M.; McCaughey,David A.. Controlled release of additive gel(s) for functional fluids. USP2008067384896.
  3. Syed Q. A. Rizvi. Functional fluids. USP2002086436882.
  4. Burrington, James D.; George, Herman F.; Martin, John R.; Kornbrekke, Ralph E.. Gels that reduce soot and/or emissions from engines. USP2009057534747.
  5. Patel, Krupal; Aswath, Pranesh B.; Shaub, Harold; Elsenbaumer, Ronald L.. High performance lubricant additives. USP2011027879776.
  6. Aswath, Pranesh B.; Shaub, Harold; Mourhatch, Ramoun; Patel, Krupal; Owen, David P.; Eisenbaumer, Ronald L.. High performance lubricants and lubricant additives for crankcase oils, greases, gear oils and transmission oils. USP2010077754662.
  7. Aswath, Pranesh B.; Shaub, Harold; Mourhatch, Ramoun; Patel, Krupal; Owen, David P.; Elsenbaumer, Ronald L.. High-performance lubricants and lubricant additives for crankcase oils, greases, gear oils and transmission oils. USP2012078227389.
  8. Qu, Jun; Luo, Huimin. Ionic liquids containing symmetric quaternary phosphonium cations and phosphorus-containing anions, and their use as lubricant additives. USP2018059957460.
  9. Parekh, Kajal; Aswath, Pranesh B.; Shaub, Harold; Elsenbaumer, Ronald L.. Low-phosphorous lubricant additive. USP2012078216986.
  10. Parekh, Kajal; Aswath, Pranesh B.; Shaub, Harold; Elsenbaumer, Ronald L.. Low-phosphorous lubricants. USP2012078216982.
  11. Wilk, Melody A.. Lubricants containing a bimetallic detergent system and a method of reducing NOx emissions employing same. USP2004046727208.
  12. Ozbalik, Nubar; Yatsunami, Kenji; Tersigni, Samuel H.; Saathoff, Lee D.. Lubricating compositions. USP2013108557752.
  13. Yagishita, Kazuhiro. Lubricating oil additive and lubricating oil composition. USP2009127629302.
  14. Burrington, James D.; Grasser, Bruce H.; George, Herman F.; Martin, John R.; Pudelski, John K.; Roski, James P.; Soukup, Barbara L.; Bartlett, Melinda E.. Slow release lubricant additives gel. USP2012108299000.
  15. Burrington, James D.; Grasser, Bruce H.; George, Herman F.; Martin, John R.; Pudelski, John K.; Roski, James P.; Soukup, Barbara L.; Bartlett, Melinda E.. Slow release lubricant additives gel. USP2011128076273.
  16. Burrington,James D.; Grasser,Bruce H.; George,Herman F.; Martin,John R.; Pudelski,John K.; Roski,James P.; Soukup,Barbara L.; Bartlett,Melinda E.. Slow release lubricant additives gel. USP2008087417012.
  17. Aswath, Pranesh; Chen, Xin; Sharma, Vibhu; Igartua, Maria Amaya; Pagano, Francesco; Binder, Wolfgang; Zare, Parvin; Doerr, Nicole. Synergistic mixtures of ionic liquids with other ionic liquids and/or with ashless thiophosphates for antiwear and/or friction reduction applications. USP2017089725669.