Lubricating oil composition containing sulfate rust inhibitors
First Claim
1. A lubricating composition of improved rust inhibitory capacity comprising a major amount of an oil of lubricating viscosity and a rust inhibiting amount of the sulfate of a polyoxyalkylenated alcohol or polyoxyalkylenated phenol or the sulfate salt thereof, said sulfate having a molecular weight in the range of from about 500 to about 5,000 and said sulfate salt being prepared by contacting said sulfate with the basic amine compound selected from ammonia, a primary or secondary alkyl monoamine, an alkanol amine, an alkylene polyamine or a succinimide of alkylene polyamine.
0 Assignments
0 Petitions
Accused Products
Abstract
A lubricating oil composition of improved rust inhibitory capability contains a small amount of the sulfate of an oxyalkylenated alcohol or phenol having a molecular weight of about 500-5,000.
-
Citations
18 Claims
- 1. A lubricating composition of improved rust inhibitory capacity comprising a major amount of an oil of lubricating viscosity and a rust inhibiting amount of the sulfate of a polyoxyalkylenated alcohol or polyoxyalkylenated phenol or the sulfate salt thereof, said sulfate having a molecular weight in the range of from about 500 to about 5,000 and said sulfate salt being prepared by contacting said sulfate with the basic amine compound selected from ammonia, a primary or secondary alkyl monoamine, an alkanol amine, an alkylene polyamine or a succinimide of alkylene polyamine.
- 2. A lubricating composition of improved rust inhibitory capability, comprising a major amount of an oil of lubricating viscosity and a rust inhibiting amount of the sulfate of a polyoxyalkylene alcohol, said sulfate having a molecular weight in the range of from about 500 to about 5,000.
-
10. A lubricating composition of improved rust inhibitory capability, comprising a major amount of an oil of lubricating viscosity, a rust inhibiting amount of the sulfate of a polyoxyalkylenated alcohol or polyoxyalkylenated phenol, or a sulfate salt thereof, wherein said sulfate has a molecular weight in the range of from about 500 to about 5,000, said sulfate salt being prepared by contacting said sulfate with ammonia, a primary or secondary alkyl monoamine, an alkanol amine, an alkylene polyamine or a succinimide of an alkylene polyamine, and sufficient alkaline earth metal carbonate dispersed in said oil to provide an alkalinity value of from 0.5 to 100 mg of KOH/gram.
-
13. A lubricating composition comprising a major portion of an oil of lubricating viscosity and from 10 to 10,000 parts per million of a sulfated alcohol having a molecular weight in the range of 500 to 5,000, said sulfated alcohol being prepared by the steps comprising (1) reacting (i) an aliphatic alcohol having from 1 to 20 carbon atoms, from 0 to 10 amino groups and from 1 to 10 hydroxy groups with (ii) ethylene oxide or propylene oxide or mixtures thereof, to form a polyoxyalkylenated alcohol, and (2) sulfating said polyoxyalkylenated alcohol by reaction with a sulfating agent selected from sulfur trioxide, sulfuric acid, chlorosulfonic acid, or sulfamic acid, to form said sulfated alcohol;
- with the proviso that when chlorosulfonic acid is employed as the sulfating agent, the polyoxyalkylenated alcohol is reacted with sodium hydride prior to its reaction with said chlorosulfonic acid.
- View Dependent Claims (14, 17)
-
15. A lubricating composition comprising a major portion of an oil of lubricating viscosity and from 10 to 10,000 parts per million of a sulfated phenol having a molecular weight in the range of 500 to 5,000, said sulfated phenol being prepared by the steps comprising (1) reacting (i) phenol or a C1 to C20 alkyl phenol with (ii) ethylene oxide or propylene oxide or mixtures thereof to form a polyoxyalkylenated phenol, and (2) sulfating said polyoxyalkylenated phenol by reaction with a sulfating agent selected from sulfur trioxide, sulfuric acid, chlorosulfonic acid or sulfamic acid, to form said sulfated phenol;
- with the proviso that when chlorosulfonic acid is employed as the sulfating agent, the polyoxylkylenated phenol is reacted with sodium hydride prior to its reaction with said chlorosulfonic acid.
- View Dependent Claims (16, 18)
Specification