Polyester packaging material
US11760873B2 · kind B2 · utility
0Cited by
13References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 27, 2018 |
| Grant date | Sep 19, 2023 |
| Priority date | — |
| Expiry date | Dec 27, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2205/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
White goniochromatic packaging article. The package wall containing a composition useful for blocking light in the spectrum ranges from about 200 nm to about 1200 nm. The composition has polyester, polymethylpentene, and a light scattering pigment. The composition optionally includes at least one other colorant. Each of the polymethylpentene and the light scattering pigment comprise about 0.1 to about 0.5 weight percent of the wall. The polyester and polymethylpentene are immiscible and when subjected to orientation stresses the composition produces a goniochromatic packaging article.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.