Thermo-shrinkable polyester film
US11020947B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 17, 2015 |
| Grant date | Jun 1, 2021 |
| Priority date | — |
| Expiry date | Feb 10, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2519/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This disclosure relates to a thermo-shrinkable polyester film with excellent UV absorbance and heat resistance. According to one embodiment of the invention, provided is a thermo-shrinkable polyester film comprising a first resin layer comprising polyester resin comprising residues of dicarboxylic acid components comprising aromatic dicarboxylic acid, and residues of diol components comprising 4-(hydroxymethyl)cyclohexylmethyl 4′-(hydroxymethyl)cyclohexanecarboxylate, and 4,4-(oxybis(methylene)bis)cyclohexane methanol; and a second resin layer comprising the polyester resin and a UV absorber, formed on at least one side of the first layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.