Biodegradable copolyester, molded article produced therefrom and process for producing the molded article
US5593778A · kind A · utility
138Cited by
1References
24Claims
0Family size
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Key dates
| Filing date | May 5, 1995 |
| Grant date | Jan 14, 1997 |
| Priority date | — |
| Expiry date | May 5, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2929
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A biodegradable copolyester having an average molecular weight of at least 50,000 produced by copolymerizing a lactic acid component as the main component with PEG, an aliphatic polyester or a sulfo group-containing ester-forming compound, a molded article produced using it, such as a conjugate fiber, and a process for producing the molded article.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.