Polylactic acid stereocomplex compositions and methods for making and using same
US8962791B2 · kind B2 · utility
4Cited by
8References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 24, 2007 |
| Grant date | Feb 24, 2015 |
| Priority date | — |
| Expiry date | May 26, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2205/02
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Thermoformed PLA stereocomplex parts are made using a PLA stereocomplex composition having a highest crystallization melting temperature from 200 to 215° C. The stereocomplex composition preferably has less than 5 J/g of lower melting (160 to 190° C.) crystallites. The stereocomplex can be pre-annealed in various ways to reduce thermoforming cycle times. The stereocomplex forms parts with low haze and good thermal resistance, at reasonable cycle times.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.