Polyester film and manufacturing method thereof
US11396579B2 · kind B2 · utility
5Cited by
0References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 25, 2018 |
| Grant date | Jul 26, 2022 |
| Priority date | — |
| Expiry date | Jun 25, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2367/02
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a polyester film and a preparation method thereof. The polyester film is formed of a polyester resin having a specific content of isosorbide and diethylene glycol introduced therein, containing a low content of oligomer, and exhibiting a specific intrinsic viscosity, thereby exhibiting excellent mechanical properties, heat resistance and chemical resistance, and good heat sealability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.