Biodegradable polymer compositions and shrink films
US5866634A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 28, 1996 |
| Grant date | Feb 2, 1999 |
| Priority date | — |
| Expiry date | Aug 28, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L67/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention provides a novel biodegradable polymer compositions effecting superiority in elongation at break, Izod impact strength and mold releasability which has not been obtained before the past and provides a biodegradable shrink film exceling in transparency, strength, flexibility, mold releasability and shrinkability by applying the biodegradable polymer composition to the shrink film. Thus, the biodegradable polymer compositions are provided which comprise as a main component a mixture of two or more of polylactic acids, glycol/aliphatic dicarboxylic acid copolymers and polycaprolactones and these biodegradable polymer compositions are applied to shrink films.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.