Biodegradable vegetable oil grease
US5595965A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 8, 1996 |
| Grant date | Jan 21, 1997 |
| Priority date | — |
| Expiry date | May 8, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2010/04
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An environmentally friendly lubricating grease composition as well as several processes for preparing the grease composition is desecribed which comprises (A) a base oil wherein the base oil is a natural oil or synthetic triglyceride of the formula ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 are aliphatic groups that contain from about 7 to about 23 carbon atoms and PA0 (B) a thickener wherein the thickener (B) is a reaction product of (B1) a metal based material and (B2) a carboxylic acid or its ester, wherein the metal based material (B1) comprises a metal oxide, metal hydroxide, metal carbonate or metal bicarbonate, wherein the metal is an alkali or alkaline earth metal and wherein the carboxylic acid (B2) is of the formula R.sup.4 (COOR.sup.5).sub.n where R.sup.4 is an aliphatic or hydroxy substituted aliphatic group that contains from 4 to about 29 carbon atoms, R.sup.5 is hydrogen or an aliphatic group containing from 1 to 4 carbon atoms and n is an integer of from 1 to 4, wherein the equivalent ratio of (B1):(B2) is from about 0.70-1.10 and wherein the weight ratio of the base oil to the sum of the metal based material and the carboxylic acid is from 50:50 to 95:5.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.