Biodegradable polymer recycling
US10344138B2 · kind B2 · utility
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5Claims
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Assignee
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Key dates
| Filing date | Sep 14, 2015 |
| Grant date | Jul 9, 2019 |
| Priority date | — |
| Expiry date | Sep 27, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/62
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A biodegradable material is capable of recovery and recycling by dissolution in water at a temperature 40° C. or higher. The material is insoluble in water at 25° C. The material includes one or both of virgin or scrap polyvinyl alcohol material resultant from manufacture of an article composed of polyvinyl alcohol, or a waste stream containing polyvinyl alcohol material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.