Process and premix for incorporating optical brighteners into a polymeric composition
US12037458B2 · kind B2 · utility
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13Claims
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Key dates
| Filing date | Sep 3, 2020 |
| Grant date | Jul 16, 2024 |
| Priority date | — |
| Expiry date | Jul 30, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09J183/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Methods for improving the dispersion of optical brighteners in polymeric compositions are provided. Polymeric compositions obtained by these methods are also provided. Premixes for use in the methods are also provided. In particular, methods for incorporating an optical brightener in a polymeric composition comprising dissolving the optical brightener in a solvent prior to adding the optical brightener to the polymeric compositions are provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.