Self lubricating polybenzimidazole shaped articles
US5384352A · kind A · utility
14Cited by
1References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 28, 1993 |
| Grant date | Jan 24, 1995 |
| Priority date | — |
| Expiry date | Jul 28, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K3/38
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A compactible polybenzimidazole composition contains from about 95 to about 5 weight percent of solid lubricant particles which are uniformly dispersed and encapsulated in from about 55 to about 95 weight percent of polybenzimidazole. The solid lubricant comprises graphite and boron nitride in a weight ratio of about 10:1 to about 1:10. The composition is useful for preparing self lubricating, shaped articles such as bearings, bearing sleeves, rings, seals, etc. which exhibit low friction properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.