Radiation-modified poly (tetrafluoroethylene) resin feeds and a process for producing the same
US7220799B2 · kind B2 · utility
4Cited by
11References
3Claims
0Family size
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Key dates
| Filing date | May 28, 2004 |
| Grant date | May 22, 2007 |
| Priority date | — |
| Expiry date | Oct 15, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2205/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Unsintered poly(tetrafluoroethylene) resin feeds are treated with ionizing radiation in an absorbed dose of no more than 1,000 Gy at room temperature in air so that only the melting temperature of the resin feeds is shifted toward the lower end without changing the quantities of heat of fusion and crystallization.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.