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Non-toxic coating composition, methods of use thereof and articles protected from attachment of biofouling organisms

A technology of non-toxic coatings and compositions, applied in botanical equipment and methods, biocide-containing paints, antifouling/underwater coatings, etc., can solve problems such as high toxicity of shellfish, achieve low price, contact and growth effective effect

Inactive Publication Date: 2003-09-24
SYMRISE GMBH & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, tributyltin is known to be highly toxic to shellfish

Method used

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  • Non-toxic coating composition, methods of use thereof and articles protected from attachment of biofouling organisms
  • Non-toxic coating composition, methods of use thereof and articles protected from attachment of biofouling organisms
  • Non-toxic coating composition, methods of use thereof and articles protected from attachment of biofouling organisms

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] Anti-adhesion test method

[0063] a. Collection and cultivation of barnacles

[0064]Adults of barnacles (Balanus amphitrite Darwin) were collected from the Sacred Heart Marine Research Center, St. Mary's College, Tuticorin, India. The barnacles were crushed, and the larvae at the nauplius stage were collected, and cultured to the cyprid stage by the method of Rittschof et al., J. Exp. Mar. Bio. Ecol., 82: 131-146 (1984). Barnacle larval cyprids are capable of touching surfaces. After touching a surface, the larvae metamorphose into barnacles.

[0065] b. Sedimentation test

[0066] Barnacle settling experiments were performed using the method described in Rittschof et al., J. Chem. Ecol., 11:551-563 (1985), supra. Mainly, 5 ml of filtered seawater with a salinity of 33-35 parts per thousand (ppt) was poured into a Falcon 50×90 mm plastic Petri watch dish, and 3-day-old cyprid stage larvae were added thereto. Vari...

Embodiment 2

[0073] Determination of microbicidal activity against seawater bacteria associated with the barnacle B. amphitrite

[0074] The effect of (-)-menthol as a bacteriostatic compound was tested on nine bacterial strains using the conventional agar diffusion method as described above in Avelin et al., J. Chem. Ecol., 19(10), 2155-67 (1993). The test bacteria used are as follows: (i) Aeromonas Aeromonas sp (Ae 1 ); (ii) Aeromonas sp (Ae 2 ); (iii) Alcaligenes sp (Alcaligenes sp (Al 1 ); (iv) Alcaligenes sp (Alcaligenes sp (Al 2 ); Flavobacterium sp (F); (vi) Pseudomonas sp (P 1 ); (vii) Pseudomonas sp (P 1 ); (viii) Vibro sp (V 1 ); and (ix) Vibro sp (V 2 ). Isolated bacteria were grown on agar medium in 6.5 mm dishes and the compound was added at a concentration of 0.004 mg / ml.

[0075] Data from experiments on bacterial strains showed that Aeromonas sp (Ae 1 ) and Flavobacterium sp(F) were sensitive to (-)-menthol, and the radius of the inhibition zone was greater than ...

Embodiment 3

[0077] Determination of microbicidal activity against seawater bacteria associated with Perna sp

[0078] Basically the same test method as in Example 2 above was used.

[0079] The data obtained represent the results of tests on 8 bacterial strains, Vibrio sp. (V 1 & V 2 ) is sensitive to (-)-menthol, and the radius of the inhibition zone is greater than 8.5mm. Other bacterial strains are moderately sensitive. see Figure 4 .

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Abstract

Antifouling coating compositions and methods are disclosed, in which the active agent is preferably (-)trans-p-menthane-3,8-diol, (-)-menthol, (-)-menthyl chloride, menthoxypropanediol, (-)-isopulegol or (-)-menthone.

Description

Background of the invention [0001] The present invention relates to non-toxic coating compositions capable of protecting coated surfaces in contact with a variety of fouling organisms. The compositions described above are advantageous for use in paint, varnish and sealant formulations. [0002] Biocides can generally be used on a variety of coating materials that are used in different ways. For example in marine paints, biocides protect submerged structures from contact with a variety of clinging organisms such as: algae, barnacles, shipworms and other harmful aquatic organisms. In lakes and rivers, biocides are used to protect underwater structures from freshwater microorganisms, such as zebra mussels. Microorganisms, their slimes, bio-organic products and absorbed organics have been found to form strong slimes on the surface of underwater structures. The initial organisms in this attachment formation process are bacteria, followed by diatoms, soft water weeds, algae, bryo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D1/02A01N25/04A01N25/24A01N29/04A01N31/06A01N35/06B05D1/18B05D1/28B05D5/00B05D7/24C09D5/14C09D5/16C09D7/12C09D201/00
CPCA01N29/04A01N31/06A01N35/06C09D5/1625A01N25/24A01N25/10A01N2300/00A01N31/04
Inventor 乔纳森R·马泰尔斯
Owner SYMRISE GMBH & CO KG
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