Friction materials
US4226759A · kind A · utility
9Cited by
2References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 31, 1978 |
| Grant date | Oct 7, 1980 |
| Priority date | — |
| Expiry date | Jul 31, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K7/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Asbestos-free friction material compositions containing from about 20 to 45% by volume of the material of a thermoset binder of a phenol formaldehyde resin and optionally a heat and chemical reistant rubber, up to 10% by volume of an inert mineral filler and as the sole fibrous reinforcement 5 to 15% by volume of short lengths of steel fibers are disclosed. The compositions are useful as brake pads and the like and has properties comparable with asbestos-based materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.