Method for producing regenerated fluororesin and regenerated fluororesin article
US7223800B2 · kind B2 · utility
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14Claims
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Key dates
| Filing date | Jul 19, 2001 |
| Grant date | May 29, 2007 |
| Priority date | — |
| Expiry date | Sep 7, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/62
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method for producing a regenerated fluororesin, characterized in that it comprises subjecting a used melt-molded fluororesin article to a heat treatment at a temperature of from room temperature to the melting point of the resin; a method for producing a regenerated fluororesin, characterized in that it comprises subjecting a used melt-molded fluororesin article to a supercritical washing treatment at a temperature of from room temperature to the melting point of the resin; and a regenerated fluororesin article containing substantially no impurities which is obtainable by the above method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.