Polylactic resin compositions for paperboard coating and paperboard coating processes using the compositions
US11787932B2 · kind B2 · utility
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11References
10Claims
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Key dates
| Filing date | Nov 30, 2018 |
| Grant date | Oct 17, 2023 |
| Priority date | — |
| Expiry date | Jan 5, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2314/00
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A polyester blend is made in a reaction of a linear polylactide resin and a thermoplastic epoxy group-containing polymer. The polyester blend is blended with a polyester having a glass transition temperature below 0C to form a polyester blend that is particular useful for making paperboard coatings in a melt extrusion process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.