Fibers comprising polyhydroxyalkanoate copolymer/polylactic acid polymer or copolymer blends
US6905987B2 · kind B2 · utility
52Cited by
22References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 17, 2002 |
| Grant date | Jun 14, 2005 |
| Priority date | — |
| Expiry date | Mar 25, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/641
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Environmentally degradable melt spun fibers comprising a polyhydroxyalkanoate copolymer and a polylactic acid polymer or copolymer are disclosed. A preferred configuration of the present invention is directed to environmentally degradable fibers comprising a sheath/core structure where the core comprises a biodegradable polyhydroxyalkanoate copolymer and the sheath comprises a polymer or copolymer of polylactic acid. Nonwoven webs and disposable articles comprising the environmentally degradable fibers are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.