Marine compositions bearing preferentially concentrated domains of non-tin, organo anti-fouling agents
US5441743A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 30, 1993 |
| Grant date | Aug 15, 1995 |
| Priority date | — |
| Expiry date | Apr 30, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D5/1625
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention is addressed to a curable, marine anti-fouling composition of a thermoplastic or thermosetting binder, solvent, non-tin, organo antifouling agent, and optionally conventional additives, e.g. leaching agents, opacifying pigments, etc. The anti-fouling agents are found in preferentially-concentrated domains (hereinafter, often referred to as "PCD") in the cured compositions. The PCDs can be termed non-homogeneous, phase-separated, or incompatible in the system. The art term used in describing the PCDs of anti-fouling agent is not limitative of the invention as the disclosure herein will demonstate. Preferably, PCDs are created by forming an oligomeric adduct of the anti-fouling agent which adduct is formed into PCDs upon the curing of the composition. Additional techniques for forming PCDs of anti-fouling agent are revealed herein. The present invention also is addressed to new, low toxicity anti-fouling agents which comprise pesticide or herbicide compounds having a X factor of between about 0.01 and 3, a Z value for vinyl or aromatic compounds of between about 0.01 and 0.08, and an LD50 value of greater than 200 mg/kg against rats or mice. Such pesticide or al…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.