Method for producing coating powders catalysts and drier water-borne coatings by spraying compositions with compressed fluids
US5716558A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 14, 1994 |
| Grant date | Feb 10, 1998 |
| Priority date | — |
| Expiry date | Nov 14, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05D2401/90
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
This invention relates to methods for spraying liquid compositions containing volatile solvent by using compressed fluids, such as carbon dioxide or ethane, to form solid particulates, coating powders, and catalyst materials, which can be produced with narrow particle size distributions and can be sprayed at higher solids levels, in ambient air or with heated air applied to just the spray instead of a spray chamber. Novel catalyst supports can be produced having a beneficial morphology such as for olefin catalysis. Drier water-borne coatings can be applied to substrates by using compressed fluids to spray water-borne coating compositions having conventional water levels, thereby reducing runs and sags and shortening dry times.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.