Coal tar and hydrocarbon mixture pitch and the preparation and use thereof
US7066997B2 · kind B2 · utility
2Cited by
44References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 9, 2002 |
| Grant date | Jun 27, 2006 |
| Priority date | — |
| Expiry date | May 9, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2555/54
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method of making the saturated aircraft brake preform using a coal tar pitch having a softening point in the range of about 160° C. to 240° C. Also, a product having natural rubber in the formulation and the method of making the product using a coal tar pitch having a softening point in the range of about 140° C. to 200° C. A mesophase pitch is formed from quinoline insoluble free coal tar pitch distillate from a high efficiency evaporative distillation process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.