Carbamate additives for low phosphorus or phosphorus free lubricating compositions
First Claim
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.
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Accused Products
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.
103 Citations
5 Claims
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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:
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(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.
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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:
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(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. - View Dependent Claims (3, 4, 5)
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Specification