Anti-fouling compositions

Details Anti-fouling compositions Anti-fouling compositions

1996-06-17

1999-11-23

Clardy, S. Mark

Plant protecting and regulating compositions

Plant growth regulating compositions

504150, 504158, 504159, 504161, 424405, 514341, 514351, 514596, 514597, 514598, A01N 4340, A01N 4350, A01N 4734

Patent

active

059900431

DESCRIPTION:

BRIEF SUMMARY
The invention relates to a process and compositions for protecting against infestation of articles, especially ships' hulls, screens, nets, constructions, quays and signalling equipment, which come into contact with seawater or brackish water.
Infestation by species of the group Lepadomorpha (goose barnacles), such as various Lepas and Scalpellum species, or by species of the group Balanomorpha (acom bamacles), such as Balanus or Pollicipes species, increases the frictional resistance of ships and leads as a result, through increased energy consumption and fent spells in dry dock, to a marked increase in the operating costs.
In addition to infestation by algae, for example Ectocarpus species and Cerarium species, particular importance attaches to infestation by sessile Entomostraca groups, which are comprised under the name Cirripedia (curiped crustacens).
It is known, in addition, that insects can be controlled by means of active substances which act on the metamorphosis from the larval stage to the adult insect (K. H. Buichel, Pflanzenschutz und Schadlingsbekampftng [Plant protection and pest control], Georg Thieme Verlag, Stuttgart 1977 Farm Chemicals Handbook, Meister Publ. Comp. 1993; The Agrochemical Handbook, Third Edition, Royal Society of Chemistry, Cambridge 1991).
It has now been found that the insecticides, alone or in combination with other active substances, have an outstanding anti-fouling (anti-infestation) effect.
Since conventional anti-infestation compositions have a high content of heavy metals, for example tin or copper, it is of advantage here that by using the insecticides according to the invention it is now possible to dispense with the use of heavy metal compounds such as, for example, bis(trialkyltin) sulfides, tri-n-butyltin laurate, tri-n-butyltin chloride, copper(I) oxide, triethyltin chloride, tri-n-butyl(2-phenyl-4-chlorophenoxy)tin, tributyltin oxide, molybdenum disulfide, antimony oxide, polymeric butyl titanate, phenyl-(bis-pyridine)-bismuth chloride, tri-n-butyltin fluoride, manganese ethylenebisdithiocarbamate, zinc dimethyldithiocarbamate, zinc ethylenebisdithiocarbamate, the zinc salt of 2-pyridinethiol 1-oxide, bisdimethyldithiocaibamoylzinc ethylenebisdithiocarbamate, zinc oxide, copper(I) ethylene-bis-dithiocarbanate, copper thiocyanate, copper naphthenate and tributyltin halides, or substantially to reduce the concentration of these compounds.
The application therefore relates to antifouling compositions comprising at least one insecticide.
Preference is given to insecticides having a development-inhibiting action which are capable of inhibiting the metamorphosis from crustacean larvae to the adult stage.
The insecticides which can be employed in accordance with the invention are generally known and can come from different structural classes.
Particularly preferred compounds in the context of the invention are benzoyl ureas such as triflumuron, chlorfluazuron, diflubermiron, flufenoxuron, flucycloxuron, hexaflumuron, penfluron, teflubenzron, nitroimines and nitromethylenes such as 1-[(6 -chloro-3-pyridinyl)methyl]4,5-dihydro-N-nitro-1H-imidazol-2-amine (imidacloprid), N-[(6-chloro-3-pyriyl)methyl-]N.sup.2 -cyano-N.sup.1 -methylaceamides (NI-25); 1-[4-(4chlorophenoxy)-3,5-dichlorophenyl]-3-(2,6-difluoro-benzoyl)-urea and N-[[2,5-dichloro4-(1,1,2,3,3,3-hexafluoropropoxy)phenyl]-amino]-carbon yl]-2,6-difluorobenzamide.
Preference is likewise given to development inhibitors from other structrral classes, for example benzoic acid [2-benzoyl-1(1,1-dimethylethyl)]-hydrazide, 2,6-dimethoxy-N-[5-]4-(pentafluoroethoxy)phenyl[-1,3,4thiadiazol-2-yl]-bez amnide, N-cyclopropyl-1,3,5-triazine-2,4-triamine, 2-(4-phenoxyphenoxy)ethyl ethylcarbamate, 1-(decycloxy)-4[(6-methoxy4-hexinyl)-oxy]benzenes, (2-propinyl)4-methoxybenzoate, fenoxycarb, pyriproxyfen, triamathene, thiapronil, hexythiazox, clofentezine, 4-chloro-5-(6-chloro-3-pyridyhnethoxy)2-3,4dichlorophenyl)pyridazin-3(2H)o nes, buprofezin, hydroprene, kinoprene, methoprene, cycloprate, gush padan, paraxon, tribunil, isomers

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patent: 3679466 (1972-07-01), Bowman, Jr.
patent: 3912519 (1975-10-01), Takagi et al.
patent: 4468405 (1984-08-01), Rigterink et al.
patent: 4818534 (1989-04-01), Levy
patent: 4883158 (1989-11-01), Twydell et al.
patent: 4923894 (1990-05-01), Kanda et al.
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