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Article having antifouling properties and intended to be used in aquatic applications, particularly marine applications

A product and performance technology, applied in the field of structural growth, can solve problems such as toxicity and pollution

Inactive Publication Date: 2013-07-10
BLUESTAR SILICONES FRANCE SAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] Tributyltin (TBT) is very effective and is therefore the most frequently used biocide in antifouling coatings, but degrading molecules of this product and its metabolites have proven to be serious and persistent fouling
[0043] However, although alkyltin-based catalysts are very effective, usually colorless, liquid and soluble in silicone oils, they have the disadvantage of being toxic (CMR2 reproductive toxicity)

Method used

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  • Article having antifouling properties and intended to be used in aquatic applications, particularly marine applications
  • Article having antifouling properties and intended to be used in aquatic applications, particularly marine applications
  • Article having antifouling properties and intended to be used in aquatic applications, particularly marine applications

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Embodiment

[0193] 1) Preparation of catalysts (5) and (6) according to the present invention

[0194] a) Synthesis of catalyst (5): [Zn (isopropyl acetoacetate) 2 ] or [Zn(iPr-AA) 2 ], where iPr-AA = isopropyl acetoacetate anion or enolate anion of isopropyl acetoacetate

[0195] A 97% solution of 100 mmol sodium methoxide (6.12 g) in 100 ml isopropanol was concentrated 20% by distillation, then 95% 100 mmol isopropyl acetoacetate (15.93 g) was added and the solution was heated at 80 °C for 1 Hours, an orange homogeneous solution was produced. A solution of zinc chloride (50 mmol, 7 g) in 50 ml isopropanol was then added at 70° C. within 1 hour. Heating is maintained between 80 and 90° C. for 3 hours and 30 minutes, and then, after cooling, the sodium chloride formed is filtered. The alcoholic solution was evaporated to dryness to obtain 25.3 g of a paste which was dissolved in 200 ml of ethanol. After hot filtration and evaporation to dryness, 17.2 g of white solid were obtained ...

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Abstract

The invention relates to an article having antifouling properties and intended to be used in aquatic applications, particularly marine applications, and to a method for slowing down the growth of aquatic organisms on submersible or semi-submersible structures.

Description

technical field [0001] The present invention relates to articles having antifouling properties for use in water-related, especially marine-related applications, and also to methods for slowing the growth of aquatic organisms on submersible or semi-submersible structures. [0002] This invention relates to the field of antifouling ("antifouling") marine coatings. Antifouling marine coatings are the final coating used to prevent the fixation of animals or plants to the underwater body of the vessel. They are used for reasons of safety, maintaining the maneuverability of the vessel, reducing fuel consumption, resisting corrosion and structural weight. Background technique [0003] The problem of "biofouling" is a major problem arising from the immersion of materials in marine media. Prevention of this phenomenon entails significant maintenance costs. [0004] Indeed, the formation of "biofouling" or "fouling" occurs during immersion in seawater, in which layers of organic an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D5/16C09D183/04B08B17/00B01J31/22B01J23/06C08G77/08
CPCB01J2231/14B01J2531/26C09D183/04B08B17/02B01J31/2234C09D5/1693C09D5/1618C09D5/1675
Inventor D·布朗克C·马利维尔尼R·费哈特
Owner BLUESTAR SILICONES FRANCE SAS