Dimer alkyl silicone polymers
View Patent ↗This invention relates to a novel class of Dimer Alkyl Silicone Polymers (DASP) and their use to reduce surface tension of lubrication oil. The improved lubricant composition based upon a very specific class of dimer alkyl silicone polymers (DASP) that despite their solubility in oil lower surface tension and improve lubrication when added at low concentrations to lubricating oils.
1. A dimer alkyl silicone polymer conforming to the following structure:
wherein:
a is an integer ranging from 1 to 200;
b is 1;
c is an integer ranging from 1 to 20;
d is an integer ranging from 11 to 15;
with the proviso that the ratio of a to c ranges from 1:1 to 10:1;
R is
e is an integer ranging from 0 to 100.
2. A dimer alkyl silicone polymer of claim 1 wherein d is 11.
3. A dimer alkyl silicone polymer of claim 1 wherein d is 15.
4. A dimer alkyl silicone polymer of claim 1 wherein c to a ranges from 1:1 to 1:5.
5. A dimer alkyl silicone polymer of claim 1 wherein c to a is 1:4.
6. A dimer alkyl silicon polymer of claim 1 wherein c to a is 1:3.
7. A process for lubricating metal which comprises contacting the metal with an effective lubrication concentration of a compound conforming to the following structure:
wherein:
a is an integer ranging from 1 to 200;
b is 1;
c is an integer ranging from 1 to 20;
d is an integer ranging from 11 to 15;
with the proviso that the ratio of a to c ranges from 1:1 to 1:10;
R is
e is an integer ranging from 0 to 100.