Carbamate additives for low phosphorus or phosphorus free lubricating compositions

• US 4,758,362 A
• Filed: 03/18/1986
• Issued: 07/19/1988
• Est. Priority Date: 03/18/1986
• Status: Expired due to Fees

• Current Assignee: The Lubrizol Corporation (Berkshire Hathaway Incorporated)
• Original Assignee: The Lubrizol Corporation (Berkshire Hathaway Incorporated)
• Inventors: Butke, Betsy J.
• Primary Examiner(s): Dixon, Jr., William R.
• Assistant Examiner(s): MCAVOY, ELLEN M
• Application Number:
  US06/841,061
• Time in Patent Office: 854 Days
• Field of Search: 252/47, 252/47.5, 564/75, 558/49, 558/51, 558/52
• US Class Current: 508/229
• CPC Class Codes: C10M 135/18 thiocarbamic type, e.g. containing the groups
• CPC Class Codes: C10M 2205/00 Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
• CPC Class Codes: C10M 2205/06 containing conjugated dienes
• CPC Class Codes: C10M 2215/04 having amino groups bound to acyclic or cycloaliphatic carbon atoms
• CPC Class Codes: C10M 2215/042 containing hydroxy groups; Alkoxylated derivatives thereof
• CPC Class Codes: C10M 2215/064 Di- and triaryl amines
• CPC Class Codes: C10M 2215/08 Amides
• CPC Class Codes: C10M 2215/082 containing hydroxyl groups; Alkoxylated derivatives
• CPC Class Codes: C10M 2215/26 Amines
• CPC Class Codes: C10M 2215/28 Amides; Imides
• CPC Class Codes: C10M 2217/024 containing monomers having an unsaturated radical bound to an amido or imido group
• CPC Class Codes: C10M 2217/046 Polyamines, i.e. macromoleculars obtained by condensation of more than eleven amine monomers
• CPC Class Codes: C10M 2217/06 Macromolecular compounds obtained by functionalisation op polymers with a nitrogen containing compound
• CPC Class Codes: C10M 2219/022 of hydrocarbons, e.g. olefines polyolefins C10M2221/041
• CPC Class Codes: C10M 2219/024 of esters, e.g. fats
• CPC Class Codes: C10M 2219/046 Overbasedsulfonic acid salts
• CPC Class Codes: C10M 2219/066 Thiocarbamic type compounds
• CPC Class Codes: C10M 2219/10 Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring
• CPC Class Codes: C10M 2219/102 containing sulfur and carbon only in the ring
• CPC Class Codes: C10M 2219/104 containing sulfur and carbon with nitrogen or oxygen in the ring
• CPC Class Codes: C10M 2219/106 : Thiadiazoles
• CPC Class Codes: C10M 2221/043 : Polyoxyalkylene ethers with a thioether group
• CPC Class Codes: C10M 2229/02 : Unspecified siloxanes; Silicones
• CPC Class Codes: C10M 2229/05 : containing atoms other than silicon, hydrogen, oxygen or carbon
• CPC Class Codes: C10N 2040/04 : Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
• CPC Class Codes: C10N 2040/042 : for automatic transmissions
• CPC Class Codes: C10N 2040/044 : for manual transmissions
• CPC Class Codes: C10N 2040/046 : for traction drives
• CPC Class Codes: C10N 2040/08 : Hydraulic fluids, e.g. brake-fluids

Abstract

A phosphorus free or a low phosphorus containing lubricant composition is provided by formulating the composition with an additive of the formula ##STR1## wherein R₁ and R₂ are independently alkyl of 1 to about 7 carbons, aryl, aralkyl or together form an alicyclic or heteroalicyclic radical in which the ring is completed through the nitrogen; X is O or S; a is 1 or 2; R₃ and R₄ are independently H, alkyl or aryl; and Z is ##STR2## wherein R₅ is hydrogen, alkyl, or aralkyl, and ##STR3## wherein Y is H, OH, R₆ where R₆ is alkyl, aryl or aralkyl, OR₆, OR₇ --OH, where R₇ is alkylene of 1 to about 7 carbon atoms, and NR₈ R₉ where R₈ and R₉ are independently hydrogen, alkyl, cycloaliphatic, heteroalicyclic or together form an alicyclic or heteroalicyclic radical in which the ring is completed through the nitrogen; with the proviso that when a is 1, Y is not OR₆.

These additives impart improved extreme pressure and anti-wear properties to lubricant compositions.

Claims

1. A low-phosphorus containing or phosphorus-free lubricating composition comprising a major amount of an oil of lubricating viscosity and a minor amount of an additive derived from reactants comprising:

(A) CS₂, COS or a source material therefor;

(B) an amine of the formula;

R'"'"'R"NH, wherein R'"'"' and R" are the same or different and are alkyl groups of 1 to about 7 carbon atoms, aryl or aralkyl, or together form an alicyclic or heteroalicyclic radical in which the ring is completed through the nitrogen, and

(C) a reactant of the formula;

space="preserve" listing-type="equation">(CR.sub.10 R.sub.11 (CR'"'"').sub.x (R'"'"'.sub.3).sub.b)Z (II)

wherein R₁₀ and R₁₁ are independently H, alkyl, aryl, Cl or Br;

R'"'"' is H, alkyl, aryl or aralkyl;

x is 0 or 1, b is 0 or 1 where x+b is 1;

R'"'"'₃ is H, alkyl or aryl, chloro or bromo and Z is CN, ##STR9## wherein R₅ is H, alkyl or aralkyl, and wherein Y is H, OH, R₆ or OR₆ where R₆ is alkyl, aryl or aralkyl, OR₇ --OH where R₇ is alkylene of 1 to about 7 carbon atoms and NR₈ R₉ where R₈ and R₉ are independently H, alkyl, cycloaliphatic, heteroalicyclic or together form an alicyclic or heteroalicyclic radical in which the ring is completed through the nitrogen;

with the proviso that when x is O, Y is not OR₆.

2. An additive for preparing a low-phosphorus containing or phosphorus-free lubricating oil, grease or automatic transmissions fluid derived from reactants comprising a major amount of an oil of lubricating viscosity and a minor amount of an additive derived from reactants comprising:

(A) CS₂, COS or a source material therefor;

(B) an amine of the formula;

R'"'"'R"NH, wherein R'"'"' and R" are the same or different and are alkyl groups of 1 to about 7 carbon atoms, aryl or aralkyl, or together form an alicyclic or heteroalicyclic radical in which the ring is completed through the nitrogen, and

(C) a reactant of the formula;

space="preserve" listing-type="equation">(CR.sub.10 R.sub.11 (CR'"'"').sub.x (R'"'"'.sub.3).sub.b)Z (II)

wherein R₁₀ and R₁₁ are independently H, alkyl, aryl, Cl or Br;

R'"'"' is H, alkyl, aryl or aralkyl;

x is 0 or 1, b is 0 or 1 where x+b is 1;

R'"'"'₃ is H, alkyl or aryl, chloro or bromo and Z is CN, ##STR10## wherein R₅ is H, alkyl or aralkyl, and wherein Y is H, OH, R₆ or OR₆ where R₆ is alkyl, aryl or aralkyl, OR₇ --OH where R₇ is alkylene of 1 to about 7 carbon atoms and NR₈ R₉ where R₈ and R₉ are independently H, alkyl, cycloaliphatic, heteroalicyclic or together form an alicyclic or heteroalicyclic radical in which the ring is completed through the nitrogen;

with the proviso that when x is O, Y is not OR₆.

3. A grease composition comprising the additive of claim 2.

4. An automatic transmission fluid comprising the additive of claim 2.

5. A hydraulic fluid comprising the additive of claim 2.