Stable antifouling paint composition containing metal salt of pyrithione and cuprous oxide
US7435771B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 23, 2005 |
| Grant date | Oct 14, 2008 |
| Priority date | — |
| Expiry date | Oct 15, 2026 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D7/61
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention describes a composition for stabilizing a paint or paint base composition against viscosity change, gelation and agglomeration during formulation and storage. Illustratively, an antifouling paint or paint base composition is disclosed that contains a hydrolysable acrylate resin such as copper acrylate, zinc acrylate, or silyl acrylate, a metal salt of pyrithione, cuprous oxide, and a primary stabilizing agent selected from the group consisting of benzoic acid, hydroxypyridine, metal salts of benzoic acid, and hydroxypyridine, with the proviso that said composition is essentially free of 2-hydroxypyridine N-oxide, and is also essentially free of the sodium, zinc and copper salts of 2-hydroxypyridine-N-oxide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.