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Additive for ship bottom paint and ship bottom paint comprising the same

A technology of additives and coatings, applied in biocide-containing paints, anti-fouling/underwater coatings, coatings, etc., can solve the problems of heavy coating film and insufficient effect, reduce the burden on ships, and solve the problem of waste Disposal issues, weight reduction effect

Inactive Publication Date: 2008-04-16
山崎 俊一 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, the paints of the above-mentioned prior art use expensive materials, and Patent Documents 1 and 3 are paints containing metals, resulting in a heavy coating film and failing to exhibit sufficient effects as expected.

Method used

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  • Additive for ship bottom paint and ship bottom paint comprising the same

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0019] The preparation of the additive for ship bottom coating of the present invention can be carried out as follows: use a mixing device to mix mechanically or manually mix pulverized fly ash and dried diatomaceous earth powder into 1-12 μm in a container. It is important at this point that the two ingredients are thoroughly mixed.

[0020] Can prevent or reduce shellfish by mixing 3% by weight to 10% by weight of the above-mentioned additive of the present invention based on the solid content of the paint in the ship bottom paint, preferably 3% by weight to 8% by weight, and particularly preferably 4% by weight to 7% by weight. Adhesion of fish and algae to the bottom coating. Even if the above-mentioned additives are mixed in a larger amount, the adhesion of shellfish and algae can be prevented or reduced, but since the strength of the coating film decreases with the increase of the amount mixed, it is not preferable.

[0021] The effect achieved by the additive of the pr...

Embodiment 1

[0029] Preparation of Additives for Ship Bottom Coatings

[0030] A) Preparation of crushed fly ash

[0031] 1) The fly ash having the particle size distribution described in Table 1 with an average particle size of 34.66 μm was pulverized by a jet mill to obtain pulverized fly ash with the particle size distribution described in Table 1 and an average particle size of 2.53 μm.

[0032] Table 1

[0033] Particle size distribution

10％

20％

30％

40％

50％

60％

70％

80％

90％

99％

Raw fly ash

4.30

μm

7.36

μm

11.58

μm

17.29

μm

23.46

μm

30.92

μm

40.75

μm

54.54

μm

79.24

μm

175.2

μm

crush fly ash

1.56

μm

1.82

μm

2.04

μm

2.24

μm

2.43

μm

2.64

μm

2.87

μm

3.16

μm ...

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Abstract

An additive for a ship bottom paint, characterized in that it comprisees a fly ash being pulverized so as to have a particle size of 1 to 12 mum on average and a dried powder of diatormaceous earth, preferably a beer yeast diatomaceous earth in a weight ratio of the pulverized fly ash and the diatomaceous earth powder of (7 to 3) : 1; and a ship bottom paint comprising the additive.

Description

technical field [0001] The present invention relates to an additive for ship bottom paint for reducing shellfish adhering to the bottom of a ship, and a ship bottom paint containing the additive. Background technique [0002] In order to reduce the adhesion ability of shellfish to ships, marine structures, and other various equipment used in the sea, various coatings for preventing shellfish adhesion have been proposed. [0003] Currently, coatings containing organic tin compounds such as tributyltin have been proposed and put into use in order to prevent shellfish from adhering. [0004] Patent Document 1 proposes an anti-algae and anti-shellfish coating in which an inorganic antibacterial agent containing silver and / or copper is substantially uniformly dispersed in a water-resistant coating. [0005] Patent Document 2 proposes a paint for preventing the adhesion of algae and shellfish containing far-infrared radioactive substances such as ceramics, anionic radioactive sub...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D5/16C09D7/12C09D201/00
Inventor 山崎俊一奥田稔
Owner 山崎 俊一
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