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Antifouling coating composition, antifouling coating film formed from the composition, coated object having the coating film on surface, and method of antifouling by forming the coating film

一种防污涂料、组合物的技术，应用在防污/水下涂料、薄料处理、松香涂料等方向，能够解决难以设计涂膜厚度、涂膜可溶性增加、涂膜呈脆性等问题，达到容易涂膜设计、粘附性高、温度依赖性低的效果

Active Publication Date: 2011-08-31
NITTO KASEI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when these copolymers are used, the coating film is brittle and may suffer from cracks, peeling, etc.
[0008] When using the copolymer containing triisopropylsilyl methacrylate or metal salts other than copper of rosin (or rosin derivatives), the coating film will show Stable solubility, however, when the seawater temperature becomes higher, the solubility of the coating film increases significantly, resulting in an unexpected large amount of dissolution of the coating film
Therefore, when the antifouling paint composition is applied to ships sailing in tropical seas, there is a problem that it is difficult to design the thickness of the coating film

Method used

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  • Antifouling coating composition, antifouling coating film formed from the composition, coated object having the coating film on surface, and method of antifouling by forming the coating film
  • Antifouling coating composition, antifouling coating film formed from the composition, coated object having the coating film on surface, and method of antifouling by forming the coating film
  • Antifouling coating composition, antifouling coating film formed from the composition, coated object having the coating film on surface, and method of antifouling by forming the coating film

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0132]

[0133] The antifouling coating composition of the present invention can be prepared by mixing the copolymer (A), the copper salt (B) and, if necessary, known additives such as the cuprous oxide and the plasticizer in a solvent. to prepare.

[0134] Properly adjust the usage amount of the copolymer (A), the copper salt (B) and the like so that each satisfies the requirement of the triorganosilyl ester-containing copolymer (A) in the antifouling coating composition. , the content of the copper salt (B) and the like.

[0135] Usable solvents include, for example, xylene, toluene, mineral spirits, MIBK, butyl acetate, and the like. Among them, xylene is particularly preferred. These solvents may be used alone or in combination of two or more.

[0136] When mixing, various materials such as the above-mentioned copolymer (A) may be dissolved or dispersed in a solvent in advance. or preferably performed. For example, the above-mentioned copolymer (A) and the above-men...

Embodiment

[0159] The features of the present invention are clearly described below with reference to Examples. However, the invention is not limited to the examples.

[0160] "%" in each of the following production examples, comparative production examples, examples, and comparative examples represents "% by weight". The viscosity is a value measured at 25°C, and is a value measured with a Brookfield rotational viscometer (B-type viscometer). The weight average molecular weight (Mw) is a value obtained by GPC (polystyrene conversion value). The conditions for GPC are as follows:

[0161] Device---HLC-8220GPC manufactured by Tosoh Corporation

[0162] Column---TSKgel SuperHZM-M 2pcs

[0163] Flow---0.35mL / min

[0164] Detector---RI

[0165] Column thermostat temperature---40℃

[0166] Eluent---THF

[0167] The non-volatile content is a value obtained by heating at 110° C. for 3 hours.

[0168] The unit of the compounding quantity of each component shown in Table 1 is "g".

manufacture example 1

[0169] Production example 1 (preparation of copolymer solution (A), S-1)

[0170] Put 230g of xylene into a 1000ml flask equipped with a thermometer, a reflux cooler, a stirrer and a dropping funnel, then stir at 100±2°C in nitrogen, while adding 230g of triisopropylsilyl methacrylate A mixture of ester, 210g methoxyethyl methacrylate, 30g methyl methacrylate, 30g ethyl acrylate and 4g (initial addition) tert-butyl peroxy-2-ethyl hexanoate was dropped over 1 hour into the flask. After dropping, polymerization reaction was performed at 100±2° C. for 2 hours. Afterwards, stir at 100±2°C, and add 1 g of tert-butylperoxy-2-ethyl hexanoate every 2 hours, add three times in total, add 270 g of xylene after the polymerization reaction and dissolve it, Thus, a triorganosilyl ester-containing copolymer solution S-1 was prepared. Table 1 shows the viscosity, non-volatile matter content, Mw and Tg of S-1.

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Abstract

Provided is a composition for forming an antifouling coating film which, in seawater, can effectively have antifouling performance over long and has a small temperature dependence of coating film dissolution rate and which is highly safe for the environment. The antifouling coating composition is characterized by comprising (A) a triorganosilyl-ester-containing copolymer obtained from a mixture of (a) a triorganosilyl methacrylate monomer represented by general formula (1) (wherein R<1>, R<2>, and R<3> are the same or different and each represents an alpha-branched C3-6 alkyl or phenyl) and (b) a methoxyalkyl methacrylate monomer represented by general formula (2) (wherein R<4> represents a C2-4 alkylene), the content of the monomer (a) in the mixture being 45 to 65 wt.% and the total content of the monomer (a) and the monomer (b) in the mixture being 80 wt.% or higher, and (B) at least one copper salt selected from the copper salt of rosin and the copper salts of rosin derivatives.

Description

technical field [0001] The present invention relates to an antifouling coating composition, an antifouling coating film formed from the composition, a coated object having the coating film on its surface, and an antifouling treatment method by forming the coating film. Background technique [0002] For example barnacle, Tubeworm, common mussel, Bugula neritina, sea squirt, green laver, sea squirt ( sea ​​lettuce), slime and other aquatic fouling organisms will adhere to ships (especially the bottom of ships), fishing gear such as fishing nets and fishing net accessories, and underwater structures such as power plant water pipes immersed in seawater, so they will Causes problems such as malfunction and damage to the appearance of ships, etc. [0003] Conventionally, the attachment of aquatic fouling organisms has been prevented by coating the surfaces of ships, fishing tools, underwater structures, etc. with antifouling paints containing organotin-containing copolymers. For...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/16C09D133/14C09D143/04C09D193/04
CPCC09D193/04C09D5/1618C08K3/10C08L93/04C09D143/04C08L43/04C09D5/165C08F20/10Y10T428/31663C08L2666/26C09D4/00C09D5/16C09D133/04
Inventor 毛利喜代美和久英典浜浦信之藤本贵义南野智史
Owner NITTO KASEI CO LTD
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