Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Having -c- – wherein x is chalcogen – bonded directly to...
Reexamination Certificate
2000-03-29
2001-06-12
Robinson, Allen J. (Department: 1616)
Drug, bio-affecting and body treating compositions
Designated organic active ingredient containing
Having -c-, wherein x is chalcogen, bonded directly to...
C504S156000, C504S130000, C504S244000, C504S252000
Reexamination Certificate
active
06245784
ABSTRACT:
The present invention relates to a process and composition for protecting articles against infestation, especially ships' hulls, screens, nets, constructions, quays and signalling equipment which come into contact with salt water or brackish water.
Infestation by sessile Oligochaetes, such as Serpulidae, and by bivalves and species of the group Lepadomorpha (goose barnacles), such as various Lepas and Scalpellum species, or by species of the group Balanomorpha (acorn barnacles), such as Balanus or Pollicipes species, increases the frictional resistance of ships and leads as a result, through increased energy consumption and, furthermore, through frequent spells in dry dock, to a marked increase in the operating costs.
In addition to infestation by algae, for example Ectocarpus species and Ceramium species, particular importance attaches to infestation by sessile Entomostraca groups, which are comprised under the name Cirripedia (cirriped crustaceans).
It is already known that N-[3-(6-chloropyridin-3-ylmethyl)thiazolidin-2-ylidene]cyanamide (thiacloprid) of the formula
possesses insecticidal properties (EP 235 725).
It has now surprisingly been found that thiacloprid, alone or in combination with other active substances, has an outstanding antifouling (antiinfestation) effect.
The use of thiacloprid alone or in combination with other active substances makes it possible to dispense with the use of heavy metals such as, for example, in 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(bispyridine)-bismuth chloride, tri-n-butyltin fluoride, manganese ethylenebisdithiocarbamate, zinc dimethyldithiocarbamate, zinc ethylenebisdithiocarbamate, zinc salt of 2-pyridinethiol 1-oxide, bisdimethyldithiocarbamoylzinc ethylenebisdithiocarbamate, zinc oxide, copper(I) ethylenebisdithiocarbamate, copper thiocyanate, copper naphthenate and tributyltin halides or to reduce significantly the concentration of these compounds.
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STN-International, Accession No. 1998-88049, XP002142576, Zusammenfassung, & Crop Prot., Bd. 17, Nr. 5, 1998, pp. 401-404, I. G. Borlongan et al “Molluscicidal Activity of Tobacco Dust Against Brackishwater Pond Snails (Cerithidae Cingulata Gmelin”.
STN-International, Accession No. 1992-87825 Cropu XP002142577, Zusammenfassung, & Biosci. Biotechnol. Biochem., Bd. 56, Nr. 8, 1992, pp. 1208-1211, R. Takasawa et al, “An Efficient Laboratory Matching and Screening Method for Antifouling Substances using the Blue Mussel Mytilus Edulis, and an Antimicrobial Assay”.
Kretschik Oliver
Kugler Martin
Kunisch Franz
Bayer Aktiengesellschaft
Eyl Diderico van
Gil Joseph C.
Henderson Richard E. L.
Pryor Alton
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