Polymeric leveling additive for acid electroplating baths
US5232575A · kind A · utility
20Cited by
7References
23Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 31, 1991 |
| Grant date | Aug 3, 1993 |
| Priority date | — |
| Expiry date | May 31, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25D3/02
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Acid, electroplating baths having consistent leveler activity contain levelers which are quaternized near-monodisperse polymers of acrylic or methacrylic trialkyl amine esters. The polymers may contain hydroxyalkyl acrylate or methacrylate ester components, unquaternized acrylic or methacrylic amine component as well as other polymeric components.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.