Modified polytetrafluoroethylene powder and method for producing tetrafluoroethylene polymer
US8883313B2 · kind B2 · utility
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11References
7Claims
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Key dates
| Filing date | Apr 4, 2005 |
| Grant date | Nov 11, 2014 |
| Priority date | — |
| Expiry date | Sep 29, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/3154
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention provides a polytetrafluoroethylene powder having moldability/processability as well as electrical characteristics in microwave bands. The present invention is a modified polytetrafluoroethylene powder which has (1) a dielectric loss tangent at 12 GHz of not higher than 2.0×10−4 and (2) a cylinder extrusion pressure of not higher than 45 MPa at a reduction ratio of 1600.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.