GB823235A - Preparation of a zinc dialkyl dithiophosphate product - Google Patents

Preparation of a zinc dialkyl dithiophosphate product

Info

Publication number
GB823235A
GB823235A GB8965/56A GB896556A GB823235A GB 823235 A GB823235 A GB 823235A GB 8965/56 A GB8965/56 A GB 8965/56A GB 896556 A GB896556 A GB 896556A GB 823235 A GB823235 A GB 823235A
Authority
GB
United Kingdom
Prior art keywords
zinc
reaction product
product
alkanol
dialkyl dithiophosphate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB8965/56A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wyeth Holdings LLC
Original Assignee
American Cyanamid Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by American Cyanamid Co filed Critical American Cyanamid Co
Publication of GB823235A publication Critical patent/GB823235A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07FACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F9/00Compounds containing elements of Groups 5 or 15 of the Periodic Table
    • C07F9/02Phosphorus compounds
    • C07F9/06Phosphorus compounds without P—C bonds
    • C07F9/16Esters of thiophosphoric acids or thiophosphorous acids
    • C07F9/165Esters of thiophosphoric acids

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Lubricants (AREA)

Abstract

A zinc dialkyl dithiophosphate product particularly adapted for use as an improvement agent for lubricating oils is obtained by reacting phosphorus pentasulphide in a molar ratio of substantially 1 to 4 with an alcohol ROH wherein R is a higher alkyl radical of 6 to 18 carbon atoms at elevated temperature to form a reaction product containing a dialkyl dithiophosphoric acid, treating the reaction product with an alcohol having the formula R1OH wherein R1 is a lower alkyl radical having up to 4 carbon atoms at about 170 DEG F. to about 200 DEG F. for from about 1/2 to about 2 1/2 hours, neutralizing the product with a compound containing zinc to form a reaction product containing the zinc dialkyl dithiophosphate and ageing said reaction product by subjecting it to a temperature within the range of from about 140 DEG F. to 195 DEG F. for from about 1/2 to 6 hours. Specified higher alcohols are 4-methyl-2-pentanol (methylisobutylcarbinol), n-hexanol, n-octanol, iso-octanol, dodecanol, hexadecanol and octadecanol and specified lower alkanols are methanol, ethanol, propanol, isopropanol and butanol. The amount of lower alkanol may be from about 5 to 25% of the weight of the higher alkanol originally reacted with the phosphorus pentasulphide. The neutralization with the zinc compound may be effected by adding up to 150% of the theoretical excess of a zinc compound such as zinc oxide or hydroxide until a hydrogen sulphide test is negative. The neutralized, aged product may be blended with other additives such as silicone oil anti-foam agents, detergents such as sodium or barium petroleum sulphonate, dropped to a still, stripped, and then filtered. A blending oil (hydrocarbon lubricating oil) may be added before or during the neutralization or after the stripping or filtering to bring the concentration of the additive to a desired range. In the examples given, methyl isobutyl carbinol is used as the higher alkanol and ethanol, isopropanol and n-butanol respectively as the lower alkanol.
GB8965/56A 1955-05-12 1956-03-22 Preparation of a zinc dialkyl dithiophosphate product Expired GB823235A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US507984A US2837549A (en) 1955-05-12 1955-05-12 Zinc dialkyl dithiophosphates

Publications (1)

Publication Number Publication Date
GB823235A true GB823235A (en) 1959-11-11

Family

ID=24020906

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8965/56A Expired GB823235A (en) 1955-05-12 1956-03-22 Preparation of a zinc dialkyl dithiophosphate product

Country Status (2)

Country Link
US (1) US2837549A (en)
GB (1) GB823235A (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3121687A (en) * 1958-06-30 1964-02-18 Sinclair Research Inc Lubricating oil compositions containing sulfonates
US2983742A (en) * 1959-03-11 1961-05-09 Gulf Oil Corp Decolorizing and improving metal salts of partial esters of dithiophosphoric acids
US2990297A (en) * 1959-12-21 1961-06-27 California Research Corp Flameroofing of wood and article
GB1089463A (en) * 1965-02-24 1967-11-01 Exxon Research Engineering Co Improvements in or relating to grease compositions
US3514476A (en) * 1966-09-28 1970-05-26 Monsanto Co Making basic zinc double salts of o,o-dialkyl phosphorodithioic acids
US4215067A (en) * 1978-12-29 1980-07-29 Standard Oil Company (Indiana) Process for the preparation of zinc salts of dihydrocarbyldithiophosphoric acids
US5569643A (en) * 1991-03-07 1996-10-29 Nippon Oil Co., Ltd. Grease composition for constant velocity joint
JP2799634B2 (en) * 1991-03-07 1998-09-21 日本石油株式会社 Grease composition for constant velocity joints
US20080125337A1 (en) * 2006-11-29 2008-05-29 Guinther Gregory H Lubricant formulations and methods
US8084403B2 (en) * 2009-05-01 2011-12-27 Afton Chemical Corporation Lubricant formulations and methods

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2368000A (en) * 1941-12-04 1945-01-23 American Cyanamid Co Lubricating compositions
US2344393A (en) * 1942-02-18 1944-03-14 American Cyanamid Co Lubricating oil composition
US2358305A (en) * 1942-07-30 1944-09-19 American Cyanamid Co Lubricating composition
US2466408A (en) * 1946-01-26 1949-04-05 American Cyanamid Co Lubricating composition
BE510012A (en) * 1951-03-29

Also Published As

Publication number Publication date
US2837549A (en) 1958-06-03

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