Anti-fouling compositions
US4531975A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 25, 1984 |
| Grant date | Jul 30, 1985 |
| Priority date | — |
| Expiry date | Jan 25, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D5/1687
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Marine anti-fouling compositions contain, in addition to the conventional resin, toxin, solvent, pigment and other additives, hollow particles, of size from 1 to 800 microns, in an amount to give a particle concentration in a dry paint film of 10 to 80% by volume. The hollow particles are preferably hollow microspheres or microballoons of glass or plastics material having an apparent bulk density of from 0.03 to 0.5 g/cc. The compositions can be applied at high film thicknesses in a single coat without crack-formation. The particles assist in maintaining a controlled slow release of toxin from the paint film, and can enhance the useful protective life thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.