Lubricant compositions

• US 4,957,643 A
• Filed: 09/29/1989
• Issued: 09/18/1990
• Est. Priority Date: 05/20/1988
• Status: Expired due to Fees

• Current Assignee: Ethyl Petroleum Additives Incorporated (Newmarket Corporation)
• Original Assignee: Ethyl Petroleum Additives Incorporated (Newmarket Corporation)
• Inventors: Lam, William Y.
• Primary Examiner(s): Chaudhuri, Olik
• Assistant Examiner(s): Johnson, Jerry D.
• Application Number:
  US07/415,093
• Time in Patent Office: 354 Days
• Field of Search: 250/47.5
• US Class Current: 508/249
• CPC Class Codes: C07C 333/20 having nitrogen atoms of dithiocarbamate groups bound to hydrogen atoms or to acyclic carbon atoms
• CPC Class Codes: C07D 295/21 Radicals derived from sulfur analogues of carbonic acid
• CPC Class Codes: C10M 135/18 thiocarbamic type, e.g. containing the groups
• CPC Class Codes: C10M 2219/066 Thiocarbamic type compounds
• CPC Class Codes: C10N 2040/25 Internal-combustion engines
• CPC Class Codes: C10N 2040/251 Alcohol-fuelled engines
• CPC Class Codes: C10N 2040/255 Gasoline engines
• CPC Class Codes: C10N 2040/28 Rotary engines
• CPC Class Codes: C10N 2070/02 Concentrating of additives

Abstract

Compounds having the formula: ##STR1## wherein: a. R is an organic radical selected from an alkyl group, an alkenyl group, an aryl group or an aralkyl group in which the alkyl or alkenyl groups contain up to 32 carbon atoms and the aryl or aralkyl groups contain up to 15 carbon atoms;

b. R¹ is hydrogen or an organic radical selected from an alkyl group or alkenyl group, an aryl or aralkyl group in which the alkyl or alkenyl groups contain up to 32 carbon atoms and the aryl or aralkyl groups contain up to 15 carbon atoms; and,

R² and R³ are the same or different alkyl groups containing from 1 to 32, more preferably 4 to 8, carbon atoms each

are effective antiwear and antioxidant additives in lubricating oil.

Claims

1. A lubricating composition containing a major amount of lubricating oil and a minor antiwear-antioxidant amount of an additive compound having the general formula:

##STR7## wherein;

a. R is an organic radical selected from an aryl group selected from a benzene or an naphthalene group or an aralkyl group, wherein the aryl portion is selected from a benzene or a naphthalene group, in which the aryl or aralkyl groups contain up to 15 carbon atoms;

b. R¹ is hydrogen or an organic radical selected from an alkyl group, an alkenyl group, an aryl group selected from a benzene or a naphthalene group or an aralkyl group, wherein the aryl portion is selected from a benzene or a naphthalene group, in which the alkyl or alkenyl groups contain up to 32 carbon atoms and the aryl or aralkyl groups contain up to 15 carbon atoms;

or

c. R and R¹ together with the nitrogen atom to which they are attached form a heterocyclic moiety selected from the group consisting of piperidine, morpholine and piperazine; and

d. R² and R³ are the same or different alkyl groups containing from 1 to 32 carbon atoms each.

2. A lubricating composition of claim 1 which comprises from 0.1 to 10 percent by weight of the additive compound.

4. The composition of claim 1 wherein both R and R¹ are selected from an aryl group or an aralkyl group.

5. The composition of claim 1 wherein R and R¹ together with the nitrogen to which they are attached form a heterocyclic moiety selected from the group consisting of piperidine, morpholine, and piperazine.

3. A concentrate for addition to a lubricating composition, said concentrate comprising a minor amount of a mineral or synthetic oil and a major amount of a compound having the general formula:

##STR8## wherein;

a. R is an organic radical selected from an aryl group selected from a benzene or a naphthalene group or an aralkyl group, wherein the aryl portion is selected from a benzene or a naphthalene group, in which the aryl or aralkyl groups contain up to 15 carbon atoms;

b. R¹ is hydrogen or an organic radical selected from an alkyl group, an alkenyl group, an aryl group selected from a benzene or a naphthalene group or an aralkyl group, wherein the aryl portion is selected from a benzene or a naphthalene group, in which the alkyl or alkenyl groups contain up to 32 carbon atoms and the aryl or aralkyl groups contain up to 15 carbon atoms;

or

c. R and R¹ together with the nitrogen atom to which they are arranged form a heterocyclic moiety selected from the group consisting of piperidine, morpholine and piperazine; and

,

d. R² and R³ are the same or different alkyl groups containing from 1 to 32 carbon atoms each.

6. The concentrate of claim 3 wherein both R and R¹ are selected from an aryl group or an aralkyl group.

7. The concentrate of claim 3 wherein R and R¹ together with the nitrogen to which they are attached form a heterocyclic moiety selected from the group consisting of piperidine, morpholine, and piperazine.