Self-lubricating composition containing polybenzimidazole, graphite and boron nitride
US5391605A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 14, 1993 |
| Grant date | Feb 21, 1995 |
| Priority date | — |
| Expiry date | Sep 14, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K3/38
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A polymeric composition containing internal lubricants is suitable for low friction applications. The composition contains from about 65 to about 85 weight percent of a polymeric blend and from about 15 to about 35 weight percent of internal lubricants, wherein said blend consists essentially of from about 35 to about 100 weight percent of polybenzimidazole and from about 0 to about 65 weight percent of poly(aryletherketone), and said lubricants consist essentially of graphite and boron nitride in a weight ratio of about 1:10 to about 10:1, respectively. The composition is useful for preparing shaped articles such as bearings, bearing sleeves, rings, etc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.