Thermoformed article of poly(ethylene 2,5 furandicarboxylate) polyester
US11618204B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 28, 2017 |
| Grant date | Apr 4, 2023 |
| Priority date | — |
| Expiry date | Jul 17, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2995/0088
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Thermoformed article including poly(ethylene-2,5-furandicarboxylate) polyester, which polyester has a weight average molecular weight (Mw) of at least 50,000, determined by gel permeation chromatography using polystyrene as standard and which polyester is semicrystalline, is prepared in a process including: providing a sheet that includes poly(ethylene-2,5-furandicarboxylate) polyester, which polyester has a weight average molecular weight (Mw) of at least 50,000, determined by gel permeation chromatography using polystyrene as standard and which polyester is semicrystalline; heating the sheet to a temperature above its glass transition temperature to obtain a pliable sheet; shaping the pliable sheet in a mold to a desired shape to obtain a pliable shaped article; cooling the pliable shaped article; and releasing the thus cooled shaped article from the mold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.