Pretreatment of polyvinyl chloride plastics for electroless deposition
US4131698A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 16, 1977 |
| Grant date | Dec 26, 1978 |
| Priority date | — |
| Expiry date | Dec 16, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C18/22
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A process for pretreating polyvinyl chloride plastics to form adherent non-grainy conformal metal coatings by electroless deposition comprising immersing the polyvinyl chloride plastic in a solution comprising at least about 10 grams of alkali metal hydroxide dissolved in a solution consisting of about 5% to about 30% by volume of a water-soluble mono-, di-, or polyhydric alcohol and about 70% to about 95% by volume of water. The immersion time is variable from about 5 minutes in ultrasonically agitated, mildly heated solutions to about 6 to about 8 hours in non-agitated, unheated solutions. After pretreatment, the polyvinyl chloride plastic is treated by standard electroless plating procedures known in the art.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.