Stable lactide particles
US8203008B2 · kind B2 · utility
3Cited by
7References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 17, 2010 |
| Grant date | Jun 19, 2012 |
| Priority date | — |
| Expiry date | Feb 17, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G63/08
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention is directed to stable lactide particles, more specifically lactide particles which are stable enough to be stored and transported at room temperature and have a quality high enough for use as starting material for polylactic acid. The lactide particles have a surface/volume ratio of the particle is lower than 3000. Preferably the lactide in the particle has an optical purity of at least 95%. The lactide particles are prepared by subjecting lactide to a shaping step comprising extrusion, pastillation, prilling, tabletting, or flaking.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.