Molded parts containing a polylactic acid composition
US8637130B2 · kind B2 · utility
6Cited by
87References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 10, 2012 |
| Grant date | Jan 28, 2014 |
| Priority date | — |
| Expiry date | Feb 10, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1352
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A molded part that is formed from a thermoplastic composition that contains a polylactic acid, propylene/α-olefin copolymer, and a polyolefin compatibilizer is provided. The propylene/α-olefin copolymer can be dispersed as discrete physical domains within a continuous matrix of the polylactic acid. Without intending to be limited by theory, it is believed that the discrete domains can help resist the expansion of the composition during a molding operation, which minimizes the degree of expansion experienced by the composition during molding in comparison to conventional polylactic acid compositions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.