Laminate containing coated polyester film
US11725089B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 3, 2020 |
| Grant date | Aug 15, 2023 |
| Priority date | — |
| Expiry date | Feb 22, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/50
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A bonding material is described that is well suited to bonding polymer films, such as polyester films, to other substrates. In one embodiment, for instance, the bonding material can be used to bond a polyester film to a polypropylene article. The bonding material generally comprises an adhesive agent combined with a cross-linking agent. The adhesive agent may comprise a carboxylic acid modified polypropylene homopolymer, copolymer or ionomer. In one embodiment, the adhesive agent comprises a polypropylene modified by an unsaturated dicarboxylic acid anhydride. The cross-linking agent, on the other hand, may comprise an oxazoline polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.