Perfluoroalkyl terminated urethane lubricants
US5502225A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 9, 1992 |
| Grant date | Mar 26, 1996 |
| Priority date | — |
| Expiry date | Nov 9, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2040/50
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
This invention relates to perfluoroalkyl group terminated urethanes, thiourethanes and ureas of the general formula EQU (R--X--CONH).sub.m A where m is 1, 2 or 3, R is R.sub.f -E and optionally R.sub.1 with the proviso that at least one R is R.sub.f -E, R.sub.f is a perfluoroalkyl group, R.sub.1 is a hydrocarbon group, E is a divalent linking group, X is --O--, --S--, --NR.sub.2 -- and R.sub.2 is H or lower alkyl and A is R.sub.f E or R.sub.1 if m is 1 and a divalent or trivalent linking group if m is 2 or 3 respectively. Compounds of this general formula are useful as solid lubricants or as additives for waxes and resins providing lubricating properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.