Granular powder of filled polytetrafluoroethylene and process for the production thereof
US6037402A · kind A · utility
6Cited by
0References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 24, 1998 |
| Grant date | Mar 14, 2000 |
| Priority date | — |
| Expiry date | Apr 24, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2327/18
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Filler-containing polytetrafluoroethylene granular powder, which has a large apparent density, a small average particle size and a narrow particle size distribution and a superior powder flowability, and gives a molded product having a superior tensile strength, elongation and surface roughness, and a process for preparing the same. The granular powder is granulated by mixing, in water, of a PTFE powder and a filler in the state of slurry in the presence of a surfactant and stirring in the presence of an organic liquid forming liquid-liquid interface with water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.