Precipitation process for making polyvinylidene fluoride powder coatings and coatings made by the process
US6812267B2 · kind B2 · utility
4Cited by
15References
15Claims
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Key dates
| Filing date | May 21, 2003 |
| Grant date | Nov 2, 2004 |
| Priority date | — |
| Expiry date | May 21, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/3154
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for making pigmented PVDF-based powder coatings by coagulation and powder based coatings made by the process. The process involves blending a PVDF latex and a water reducible acrylic polymer and pigment dispersion, adding coagulant to precipitate solid PVDF and pigment associated by ionic interaction with acrylic polymer binder, separating solids and drying the precipitate. Also, methods for coating substrates with the powder coating and coated substrates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.