Polytetrafluoroethylene composition, method for its production and granulated product
US6538058B2 · kind B2 · utility
11Cited by
3References
14Claims
0Family size
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Key dates
| Filing date | Sep 24, 2001 |
| Grant date | Mar 25, 2003 |
| Priority date | — |
| Expiry date | Sep 24, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/252
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A PTFE composition comprising a dispersion-polymerized polytetrafluoroethylene (PTFE) and a filler, wherein the powder irregular shape ratio of the PTFE is at most 50%, and a PTFE granulated product obtained by granulating the PTFE composition. The composition is produced by jetting high pressure water to a mixture comprising the dispersion-polymerized PTFE and the filler. The dispersion-polymerized PTFE composition and granulated product thus obtained are suitable for molding.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.