Process of preparing polymer-coated powder particles
US3969547A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 15, 1974 |
| Grant date | Jul 13, 1976 |
| Priority date | — |
| Expiry date | Aug 15, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D5/03
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Organic or inorganic particulate solid substances are coated with a polymeric material by dispersing the particulate solids, the surfaces of which have been treated so as to be compatible with the polymer coating, in a solution containing the polymer dissolved in a water-immiscible solvent, slowly introducing into the dispersion an aqueous solution of a hydrophilic protective colloid, thus producing an emulsifying liquid medium, and removing therefrom the solvent, to finally obtain polymer coated solid particles. The polymer-coated powder thus obtained is useful for application to various substrates by fluidized bed coating, electrostatic spraying, or electrophoretic deposition, followed by sintering to form films.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.