JPH03259965A - Top coating composition for preventing marine organism from adhering - Google Patents

Top coating composition for preventing marine organism from adhering

Info

Publication number
JPH03259965A
JPH03259965A JP5960990A JP5960990A JPH03259965A JP H03259965 A JPH03259965 A JP H03259965A JP 5960990 A JP5960990 A JP 5960990A JP 5960990 A JP5960990 A JP 5960990A JP H03259965 A JPH03259965 A JP H03259965A
Authority
JP
Japan
Prior art keywords
epoxy resin
silicone
coating composition
modified epoxy
aminoalkoxysilane
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP5960990A
Other languages
Japanese (ja)
Inventor
Susumu Kadota
進 門田
Yoshiteru Miki
芳昶 三木
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SAKAI TEKKOSHO KK
Nippon Paint Co Ltd
Original Assignee
SAKAI TEKKOSHO KK
Nippon Paint Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SAKAI TEKKOSHO KK, Nippon Paint Co Ltd filed Critical SAKAI TEKKOSHO KK
Priority to JP5960990A priority Critical patent/JPH03259965A/en
Publication of JPH03259965A publication Critical patent/JPH03259965A/en
Pending legal-status Critical Current

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  • Epoxy Resins (AREA)
  • Paints Or Removers (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

PURPOSE:To prepare the title compsn. which can be directly applied to a wet corrosion-resistant coating film, prevents a marine organism from adhering, and facilitates the mechanical removal of the adherent organism by compounding a silicone-modified epoxy resin and a specified amt. of an aminoalkoxysilane as the components for forming a coating film. CONSTITUTION:A silicone-modified epoxy resin (pref. comprising a reaction product of an epoxy resin with a diorganosiloxane oligomer and having an epoxy equivalent of 400-2000) and an aminoalkoxysilane in an equivalent ratio to the resin of 0.5-20 are compounded to give a top coating compsn., which can be directly applied to a wet, corrosion-resistant coating film which has been applied, e.g. to the internal surface of a conduit tube in a power plant or to the metal surface of a marine construction in contact with sea water, thus preventing a marine organism, such as barnacles, from adhering to the surface and/or enabling the removal or the adherend organism from the surface.

Description

【発明の詳細な説明】 土金里生公立 本発明は、発電所の導水管の内面や、各種海洋構造物等
の海水と接触する金属表面に上塗塗料として塗装し、フ
ジッボ等の海生生物の付着を妨げ、および/または付着
した海生生物の除去を容易にするための塗料組成物に関
する。
Detailed Description of the Invention The present invention is applied as a top coat to the inner surfaces of water pipes in power plants and metal surfaces that come into contact with seawater, such as various marine structures, to prevent the adhesion of marine organisms such as Fujibo. The present invention relates to a coating composition for preventing and/or facilitating the removal of attached marine organisms.

宜量技歪 例えば原子力または火力発電所においては冷却水として
大量に使用される海水を採取し、排出するための導水管
は、単にそれを腐食から保護するばかりでなく、フジッ
ボ等の海生生物から保護することが必要である。他の海
洋構築物の金属材料にも同様な問題がある。すなわち防
食塗料を塗装したままでは海生生物が多量に付着し、か
つフジッボ等が塗膜に食い込み、その除去作業が困難に
なり、また強固に付着した海生生物を機械的に除去する
と塗膜を傷つけ、防食性を低下させる。このため防食塗
料の上にシリコーンゴム被覆層を設けることが提案され
ているが、シリコーンゴムは防食塗膜との密着性が悪い
ため、中間に両者の密着性を増強するように設計された
中塗塗料の塗装を必要とし、工程が複雑化する。
For example, water pipes for collecting and discharging seawater, which is used in large quantities as cooling water in nuclear or thermal power plants, not only protect it from corrosion but also protect it from marine life such as Fujibo. It is necessary to protect from Similar problems exist with metallic materials for other marine structures. In other words, if the anti-corrosive paint is left on, a large amount of marine life will adhere to it, and Fujibo and other creatures will bite into the paint film, making it difficult to remove.Also, mechanically removing the strongly adherent marine life will damage the paint film. damage and reduce corrosion resistance. For this reason, it has been proposed to provide a silicone rubber coating layer on top of the anticorrosion paint, but since silicone rubber has poor adhesion to the anticorrosion paint, an intermediate coating designed to enhance the adhesion between the two is used. It requires painting, which complicates the process.

そこで本発明は、防食塗料の塗膜の上に直接塗り重ねる
ことができ、海生生物の付着を減らし、および/または
付着した海生生物の機械的除去を容易化する上塗塗料組
成物を提供する。
Therefore, the present invention provides a top coat composition that can be applied directly onto a coating film of an anticorrosive paint, reduces the adhesion of marine organisms, and/or facilitates the mechanical removal of attached marine organisms. do.

主発里企皿玉 本発明により、海水と接触する金属表面に防食塗料を塗
装した上に海生生物の付着から保護するために上塗塗料
Mi戒酸物提供される。本発明の上塗塗料組成物は、塗
膜成分として、 (a)  シリコーン変性エポキシ樹脂、(b)  前
記シリコーン変性エポキシ樹脂のエポキシ当量に対し0
.5ないし2.0当量のアミノアルコキシシラン を含んでいる。
According to the present invention, an anticorrosive paint is applied to a metal surface that comes into contact with seawater, and an overcoat is provided for protecting the metal surface from adhesion by marine organisms. The top coating composition of the present invention has as coating film components: (a) a silicone-modified epoxy resin; (b) 0 with respect to the epoxy equivalent of the silicone-modified epoxy resin;
.. It contains 5 to 2.0 equivalents of aminoalkoxysilane.

シリコーン変性エポキシ樹脂は、エポキシ樹脂とジオル
ガノシロキサンオリゴマーとの反応生成物である。エポ
キシ樹脂は、ビスフェノールA型、ビスフェノールF型
、ノボラック型、ポリフェノール型等一般に塗料に使用
されるタイプのものでよく、エポキシ当量400〜20
00を有するものが好ましい。ジオルガノシロキサン例
えばジメチルシロキサンは、エポキシ樹脂と重量で3=
97ないし50 : 50、好ましくは5:95ないし
30ニア0の割合で反応させたものがよく、例えば信越
化学工業■からES−1002Tとして市販されている
。ジオルガノシロキサンの割合が少ないと、海生生物の
付着防止の効果が不十分であり、反対に大き過ぎると防
食塗料との密着性が低下する。
Silicone-modified epoxy resins are reaction products of epoxy resins and diorganosiloxane oligomers. The epoxy resin may be of a type commonly used in paints, such as bisphenol A type, bisphenol F type, novolac type, or polyphenol type, and has an epoxy equivalent of 400 to 20.
00 is preferred. Diorganosiloxane, such as dimethylsiloxane, is 3=3 by weight with the epoxy resin.
It is preferable to react at a ratio of 97 to 50:50, preferably 5:95 to 30:0, and is commercially available as ES-1002T from Shin-Etsu Chemical Co., Ltd., for example. If the proportion of diorganosiloxane is too small, the effect of preventing the adhesion of marine organisms will be insufficient; on the other hand, if the proportion is too large, the adhesion to the anticorrosive paint will decrease.

本発明の塗料組成物の他の必須成分であるアミノアルコ
キシシランは、前記シリコーン変性エポキシ樹脂の橋か
け剤であると同時に、形成された塗膜の臨界表面張力を
低下させ、海生生物の付着を妨げる効果を有する。具体
例としては、一般にシランカップリング剤として知られ
ているT−アミノプロピルトリメトキシシラン、γ−ア
ミノプロピルメチルジメトキシシランなどがあり、信越
化学工業株からKBM603として市販されている。こ
れらはシリコーン変性エポキシ樹脂のエポキシ当量に対
して0.5ないし2.0当量の割合で使用されるのが好
ましい。アミノアルコキシシランはシリコーン変性エポ
キシ樹脂を含む他の成分とは別の容器に収容し、使用時
混合する二液型塗料の形で提供するのが好ましい。
Aminoalkoxysilane, which is another essential component of the coating composition of the present invention, serves as a crosslinking agent for the silicone-modified epoxy resin, and at the same time lowers the critical surface tension of the formed coating film, thereby reducing the adhesion of marine organisms. It has the effect of hindering Specific examples include T-aminopropyltrimethoxysilane and γ-aminopropylmethyldimethoxysilane, which are generally known as silane coupling agents, and are commercially available from Shin-Etsu Chemical Co., Ltd. as KBM603. These are preferably used in an amount of 0.5 to 2.0 equivalents based on the epoxy equivalent of the silicone-modified epoxy resin. It is preferable that the aminoalkoxysilane is provided in the form of a two-component paint, which is stored in a separate container from other components including the silicone-modified epoxy resin and mixed at the time of use.

本発明の塗料組成物は、シリコーン変性エポキシ樹脂に
対し20重量%まで、例えば3〜15%のシリコーンオ
イルを含むことができる。シリコーンオイルの添加は塗
膜の臨界表面張力を下げ、海生生物の付着を困難にする
効果を有する。シリコーンオイルはジメチルシロキサン
を主体とした低分子量シリコーンであり、例えば信越化
学工業■よりKF96として市販されている。
The coating compositions of the present invention can contain up to 20% by weight of silicone oil, for example from 3 to 15%, based on the silicone-modified epoxy resin. Addition of silicone oil has the effect of lowering the critical surface tension of the coating film and making it difficult for marine organisms to adhere to it. The silicone oil is a low molecular weight silicone mainly composed of dimethylsiloxane, and is commercially available as KF96 from Shin-Etsu Chemical Co., Ltd., for example.

本発明の塗料組成物はさらに、先に述べたような未変性
エポキシ樹脂をシリコーン変性エポキシ樹脂に対して2
0重量%まで、例えば3〜15%の割合で含むことがで
きる。未変性エポキシ樹脂は、下塗防食塗料膜との密着
性を良くし、さらに上塗塗膜の機械的強度を増強する。
The coating composition of the present invention further comprises adding an unmodified epoxy resin as described above to a silicone-modified epoxy resin.
It can be present in proportions up to 0% by weight, for example from 3 to 15%. The unmodified epoxy resin improves the adhesion with the undercoat anticorrosive paint film and further increases the mechanical strength of the topcoat film.

本発明の塗料組成物は、以上述べた皮膜形成樹脂成分に
加え、二酸化チタン、グラファイト、弁柄などの着色顔
料、タルク、硫酸バリウム、炭酸カルシウムなどの体質
顔料、粘度調節剤、分散剤、消泡剤、色分れ防止剤など
の慣用の添加剤、アミノアルコキシシランによるシリコ
ーン変性エポキシ樹脂の橋かけ反応を促進する触媒など
を含んでもよいことは勿論である。溶剤としてはトルエ
ン、キシレンなどの芳香族炭化水素、メチルエチルケト
ン、メチルイソブチルケトンなどのケトン類、ブタノー
ル、イソプロピルアルコールなどのアルコール類、それ
らのl昆合物などを用いることができる。
In addition to the film-forming resin components described above, the coating composition of the present invention includes coloring pigments such as titanium dioxide, graphite, and Bengara, extender pigments such as talc, barium sulfate, and calcium carbonate, viscosity modifiers, dispersants, and erasers. Of course, it may also contain conventional additives such as foaming agents and color separation inhibitors, and catalysts that promote the crosslinking reaction of the silicone-modified epoxy resin with aminoalkoxysilane. As the solvent, aromatic hydrocarbons such as toluene and xylene, ketones such as methyl ethyl ketone and methyl isobutyl ketone, alcohols such as butanol and isopropyl alcohol, and mixtures thereof can be used.

塗料化は、アミノアルコキシシランを除く他の成分をS
Gミル、ロールミル、ボールミル等を用いて均一に分散
し、使用特別容器に収容したアミノアルコキシシランの
溶液と混合し、エアレススプレー、刷毛塗り、ローラー
塗り等の常法によって塗装することができる。下塗塗料
は、タールエポキシ樹脂、エポキシ樹脂、ウレタン樹脂
等を塗膜成分とする慣用の防食塗料でよい。
To make the paint, other ingredients except the aminoalkoxysilane are mixed with S.
It can be uniformly dispersed using a G mill, roll mill, ball mill, etc., mixed with an aminoalkoxysilane solution stored in a special container, and coated by a conventional method such as airless spraying, brush coating, roller coating, etc. The undercoat may be a conventional anticorrosive paint containing tar epoxy resin, epoxy resin, urethane resin, or the like as a coating component.

本発明の塗料組成物は、臨界表面張力の低い、従って海
生生物の付着し難い塗膜を与え、また比較的硬度の高い
塗膜を与えるからフジッボ等が深く食い込むことはなく
、従ってそれらが付着しても容易に機械的に除去するこ
とができる。また、下塗塗膜との密着性がすぐれている
ので、中間に中塗りを必要としない。
The coating composition of the present invention has a low critical surface tension, so it provides a coating film that is difficult for marine organisms to adhere to, and it also provides a coating film with relatively high hardness, so Fujibuki etc. do not dig into it deeply, so they can Even if it adheres, it can be easily removed mechanically. Also, since it has excellent adhesion to the undercoat film, no intermediate coat is required.

以下に実施例を示す。Examples are shown below.

実施例1および2 (A 液) 二酸化チタン 沈降性硫酸バリウム タルク ヘントナイト キシレン (B 液) 比較例 (A 液) 一酸化チタン 沈降性硫酸バリウム タルク ベントナイト キシレン イソプロピルアルコール (B 液) 2二」五 30X300x300肛の軟鋼手反に、タールエポキシ
塗料(日本ペイント製エポタールBO,JISK−56
641種)を乾燥膜厚300μに塗装し、実施例1およ
び2にあってはA液とB液とを100=4の割合にd合
し、比較例ではA液とB液とを80:20の割合に混合
し、それぞれ乾燥膜厚50μに塗装してテストピースを
作成した。
Examples 1 and 2 (Liquid A) Titanium dioxide precipitated barium sulfate talcum bentonite xylene (Liquid B) Comparative example (Liquid A) Titanium monoxide precipitated barium sulfate talcum bentonite xylene Isopropyl alcohol (Liquid B) 22"5 30 x 300 x 300 Apply tar epoxy paint (Epotal BO manufactured by Nippon Paint, JISK-56) to the mild steel part of the anus.
641 types) to a dry film thickness of 300 μm, and in Examples 1 and 2, liquids A and B were combined at a ratio of 100=4, and in comparative examples, liquids A and B were mixed at a ratio of 80:1. A test piece was prepared by mixing 20 parts each and coating each part to a dry film thickness of 50 microns.

これらを岡山県玉野市の日本ペイント株式会社臨海試験
所において海中に水面下1mに3ケ月間浸漬し、海生生
物の付着状態を観察した。また付着したフジッボを鈍角
の刃を有するナイフでフジッボの底板部を横に押し、は
がれ易さを観察した。
These were immersed in the sea at 1 m below the water surface for 3 months at Nippon Paint Co., Ltd.'s marine laboratory in Tamano City, Okayama Prefecture, and the state of adhesion of marine organisms was observed. In addition, the bottom plate of the attached Fujibbo was pushed sideways with a knife having an obtuse edge, and the ease with which it came off was observed.

結果を下表に示す。The results are shown in the table below.

トルエン n−ブタノール 計  00toluene n-butanol total  00

Claims (6)

【特許請求の範囲】[Claims] (1)海水と接触する金属表面に防食塗料を塗装した上
に海生生物の付着から保護するため塗装される上塗塗料
組成物であって、 (a)シリコーン変性エポキシ樹脂、 (b)前記シリコーン変性エポキシ樹脂のエポキシ当量
に対し0.5ないし2.0当量のアミノアルコキシシラ
ン、 を塗膜成分として含有することを特徴とする上塗塗料組
成物。
(1) A top coat composition that is applied to a metal surface that comes into contact with seawater with an anticorrosive paint and then applied to protect the surface from adhesion of marine life, comprising: (a) a silicone-modified epoxy resin; (b) the silicone; A top coating composition comprising, as a coating component, an aminoalkoxysilane in an amount of 0.5 to 2.0 equivalents based on the epoxy equivalent of a modified epoxy resin.
(2)前記シリコーン変性エポキシ樹脂は、エポキシ当
量が100〜2000のエポキシ樹脂とジオルガノシロ
キサンとの反応生成物である第1項の上塗塗料組成物。
(2) The top coating composition of Item 1, wherein the silicone-modified epoxy resin is a reaction product of an epoxy resin having an epoxy equivalent of 100 to 2,000 and a diorganosiloxane.
(3)前記ジオルガノシロキサンとエポキシ樹脂の比は
重量で3:97ないし50:50である第2項の上塗塗
料組成物。
(3) The top coating composition of item 2, wherein the ratio of the diorganosiloxane to the epoxy resin is from 3:97 to 50:50 by weight.
(4)前記シリコーン変性エポキシ樹脂に対し20重量
%までのシリコーンオイルを含んでいる第1項ないし第
3項のいずれかの上塗塗料組成物。
(4) The top coating composition according to any one of Items 1 to 3, which contains up to 20% by weight of silicone oil based on the silicone-modified epoxy resin.
(5)前記シリコーン変性エポキシ樹脂の20重量%ま
での未変性エポキシ樹脂を含んでいる第1項ないし第4
項のいずれかの塗料組成物。
(5) Items 1 to 4 containing up to 20% by weight of unmodified epoxy resin of the silicone modified epoxy resin.
Coating composition according to any of paragraphs.
(6)アミノアルコキシシランと他の成分とを分離して
貯蔵し、使用時混合する二液性塗料の形の第1項ないし
第5項のいずれかの塗料組成物。
(6) The coating composition according to any one of items 1 to 5, which is in the form of a two-component paint in which the aminoalkoxysilane and other components are stored separately and mixed at the time of use.
JP5960990A 1990-03-09 1990-03-09 Top coating composition for preventing marine organism from adhering Pending JPH03259965A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5960990A JPH03259965A (en) 1990-03-09 1990-03-09 Top coating composition for preventing marine organism from adhering

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5960990A JPH03259965A (en) 1990-03-09 1990-03-09 Top coating composition for preventing marine organism from adhering

Publications (1)

Publication Number Publication Date
JPH03259965A true JPH03259965A (en) 1991-11-20

Family

ID=13118167

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5960990A Pending JPH03259965A (en) 1990-03-09 1990-03-09 Top coating composition for preventing marine organism from adhering

Country Status (1)

Country Link
JP (1) JPH03259965A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001060923A1 (en) * 2000-02-21 2001-08-23 Daikin Industries, Ltd. Resin composition for preventing attachment of aquatic organism or physiological substance
US8067066B2 (en) 2003-10-03 2011-11-29 Hempel A/S Tie-coat composition comprising at least two types of functional polysiloxane compounds and a method for using the same for establishing a coating on a substrate
JP2018184536A (en) * 2017-04-26 2018-11-22 株式会社Snt Falling film
CN111989373A (en) * 2018-04-27 2020-11-24 陶氏环球技术有限责任公司 Silicone resin composition

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001060923A1 (en) * 2000-02-21 2001-08-23 Daikin Industries, Ltd. Resin composition for preventing attachment of aquatic organism or physiological substance
US8067066B2 (en) 2003-10-03 2011-11-29 Hempel A/S Tie-coat composition comprising at least two types of functional polysiloxane compounds and a method for using the same for establishing a coating on a substrate
JP2018184536A (en) * 2017-04-26 2018-11-22 株式会社Snt Falling film
CN111989373A (en) * 2018-04-27 2020-11-24 陶氏环球技术有限责任公司 Silicone resin composition
US11472983B2 (en) 2018-04-27 2022-10-18 Dow Global Technologies Llc Polysiloxane resin composition

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