JP2001049464A - Member in contact with water - Google Patents

Member in contact with water

Info

Publication number
JP2001049464A
JP2001049464A JP11222377A JP22237799A JP2001049464A JP 2001049464 A JP2001049464 A JP 2001049464A JP 11222377 A JP11222377 A JP 11222377A JP 22237799 A JP22237799 A JP 22237799A JP 2001049464 A JP2001049464 A JP 2001049464A
Authority
JP
Japan
Prior art keywords
water
lead
contact member
member according
layer
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
JP11222377A
Other languages
Japanese (ja)
Inventor
Makoto Hayakawa
信 早川
Masanori Taneo
正規 種生
Nobuhiko Kanekuni
伸彦 兼国
Hiroyuki Togawa
裕行 砥川
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.)
Toto Ltd
Original Assignee
Toto 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 Toto Ltd filed Critical Toto Ltd
Priority to JP11222377A priority Critical patent/JP2001049464A/en
Publication of JP2001049464A publication Critical patent/JP2001049464A/en
Pending legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
    • F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
    • F16L58/04—Coatings characterised by the materials used

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)

Abstract

PROBLEM TO BE SOLVED: To obtain a material having free-cuttability and lead elution preventability, to which the adhesion of fur and scale is hard to occur, and patina caused by corrosion is hard to be generated by forming a lead elution-preventing layer on the surface of a copper alloy base material contg. lead and providing the surface with a layer contg. a water-repellent material. SOLUTION: Preferably, the water-repellent material is composed of a silicone resin or a fluororesin, and the silicone is composed of a dehydrated condensate of hydrolyzable alkoxysilane, hydrolyzable alkoxysilane, hydrolyzable fluoroalkylsilane or the like. Preferably, the lead elution-preventing layer is composed of a dense layer and contains a material fetching lead selectively and or the a binding agent hardening material. Preferably, the dense layer is composed of zirconia, titania, alumina, silica or the like, the material having lead selective capturability is composed of apatite, bone coal, an organic chelate compd. or the like, and the binder agent hardening material is composed of zirconia, titania, alumina or the like.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は、水栓金具、水道配
管、配管バルブ、水道メーター、給湯機用熱交換器、ポ
ンプ用品、配管継ぎ手、水温センサ保護管、スプリンク
ラー用部品、噴霧ノズル、ホース継ぎ手、太陽熱温水
器、ボールタップ装置、給水ヘッダー等の接水部材に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to faucet fittings, water pipes, pipe valves, water meters, heat exchangers for water heaters, pump supplies, pipe joints, water temperature sensor protection pipes, parts for sprinklers, spray nozzles, hoses. The present invention relates to a water contact member such as a joint, a solar water heater, a ball tap device, and a water supply header.

【０００２】[0002]

【従来の技術】水栓金具、水道配管等には、鋳造性、機
械加工性並びに経済性に優れた青銅や黄銅などの銅合金
製のものが多く用いられている。青銅では鋳造性や機械
加工性等の特性を良好にするため、黄銅では切削性や熱
間鍛造性等の特性を良好にするため、鉛を所定量添加し
た合金が使用されている。2. Description of the Related Art For faucet fittings, water pipes, and the like, those made of copper alloys such as bronze and brass, which are excellent in castability, machinability and economy, are often used. In order to improve the properties such as castability and machinability of bronze, and to improve the properties such as machinability and hot forgeability of brass, an alloy containing a predetermined amount of lead is used.

【０００３】しかし、一方、鉛含有銅合金で製造した水
栓金具やバルブ等に、水道水などの流体を供給すると鉛
が水道水に微量溶出し、使用環境に影響を与える虞があ
るため、銅合金の無鉛化の研究が進められている。On the other hand, when a fluid such as tap water is supplied to a faucet or valve made of a lead-containing copper alloy, trace amounts of lead may be eluted into the tap water, which may affect the use environment. Research into lead-free copper alloys is under way.

【０００４】[0004]

【発明が解決しようとする課題】しかしながら、加工の
ための快削性を銅合金に基礎づける基本成分は鉛であ
り、これを合金成分から排除したり減率したりすること
は加工のための快削性に直接影響するところとなる。However, the basic component that forms the basis of the copper alloy for the free-cutting property for processing is lead, and eliminating or reducing the rate of this component from the alloy component is not suitable for processing. This has a direct effect on free-cutting properties.

【０００５】また、上記接水部材では、水垢やスケール
の付着が生じやすい。また、腐食により緑青が発生す
る。[0005] In addition, in the above-mentioned water-contacting member, adhesion of scale and scale is likely to occur. Further, patina is generated by the corrosion.

【０００６】そこで、本発明は快削性を有するととも
に、鉛溶出防止性にも優れ、かつ水垢やスケールの付着
が生じにくく、腐食により緑青が発生しにくい接水部材
を提供することを目的とする。Accordingly, an object of the present invention is to provide a water-contacting member which has free cutting properties, is excellent in preventing lead from being eluted, hardly causes adhesion of scale and scale, and hardly generates patina due to corrosion. I do.

【０００７】[0007]

【課題を解決するための手段】本発明では、上記課題を
解決すべく、鉛を含有する銅合金基材表面に、鉛溶出防
止層が形成されており、さらにその上に撥水性物質を含
む層が設けられていることを特徴とする接水部材を提供
する。快削性を有する鉛を含有する銅合金基材表面に、
鉛溶出防止層を設けることにより鉛の水中への溶出が抑
制される。また、最表層にシリコーン又はフッ素樹脂等
の撥水性物質を含む層を設けることにより水垢やスケー
ルの付着が生じにくく、腐食により緑青が発生しにくく
なる。According to the present invention, in order to solve the above-mentioned problems, a lead elution preventing layer is formed on the surface of a lead-containing copper alloy base material, and further contains a water repellent substance thereon. Provided is a water-contact member, which is provided with a layer. On the surface of copper alloy base material containing lead with free-cutting properties,
By providing the lead elution preventing layer, elution of lead into water is suppressed. In addition, by providing a layer containing a water-repellent substance such as silicone or a fluororesin on the outermost layer, it is difficult for scale or adhesion of scale to occur, and it is difficult to generate patina due to corrosion.

【０００８】本発明の好ましい態様においては、鉛溶出
防止層は緻密層からなるようにする。そうすることで、
鉛イオンの水中への移動が防止されるので、鉛の水中へ
の溶出が抑制される。In a preferred embodiment of the present invention, the lead elution preventing layer is formed of a dense layer. By doing so,
Since the migration of lead ions into water is prevented, the elution of lead into water is suppressed.

【０００９】本発明の好ましい態様においては、前記鉛
溶出防止層は、鉛選択捕捉性を有する物質を含むように
する。鉛選択捕捉性を有する物質を含む層を設けること
により、鉛が前記層に捕捉されるので、鉛の水中への溶
出が抑制される。In a preferred aspect of the present invention, the lead elution preventing layer contains a substance having a selective lead trapping property. By providing a layer containing a substance having a selective lead trapping property, lead is trapped in the layer, so that elution of lead into water is suppressed.

【００１０】本発明の好ましい態様においては、鉛溶出
防止層は、鉛選択捕捉性を有する物質と結着剤硬化物と
を含むようにする。結着剤により、鉛選択捕捉性を有す
る物質を固着するようにすることで、耐摩耗性が増加
し、長期に亘り鉛の水中への溶出が抑制される。[0010] In a preferred embodiment of the present invention, the lead elution preventing layer contains a substance having a selective lead capturing property and a cured binder. By fixing the substance having the selective lead capturing property by the binder, the wear resistance is increased, and the elution of lead into water is suppressed for a long time.

【００１１】[0011]

【発明の実施の形態】以下に、本発明の詳細を説明す
る。本発明の接水部材とは、例えば、水栓金具、水道配
管、配管バルブ、水道メーター、給湯機用熱交換器、ポ
ンプ用品、配管継ぎ手、水温センサ保護管、スプリンク
ラー用部品、噴霧ノズル、ホース継ぎ手、太陽熱温水
器、ボールタップ装置、給水ヘッダー等である。特に、
アパタイトは鉛の選択捕捉性に非常に優れるので好まし
い。DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described below. The water contact member of the present invention includes, for example, faucet fittings, water pipes, pipe valves, water meters, heat exchangers for water heaters, pump supplies, pipe joints, water temperature sensor protection pipes, parts for sprinklers, spray nozzles, hoses Fittings, solar water heaters, ball tap devices, water supply headers, etc. In particular,
Apatite is preferred because it has excellent selectivity for lead.

【００１２】鉛を含有する銅合金基材には、例えば、青
銅、黄銅、真鍮のうちのいずれかが好適に利用可能であ
る。For the lead-containing copper alloy substrate, for example, any one of bronze, brass, and brass can be suitably used.

【００１３】撥水性物質には、シリコーン又はフッ素樹
脂が好適に利用できる。シリコーンとしては、例えば、
加水分解性アルコキシシラン、加水分解性アルキルシラ
ン、加水分解性フルオロアルキルシランから選ばれる少
なくとも１種の脱水縮合物が利用可能である。As the water-repellent substance, silicone or fluorine resin can be suitably used. As silicone, for example,
At least one dehydration condensate selected from hydrolyzable alkoxysilanes, hydrolyzable alkylsilanes, and hydrolyzable fluoroalkylsilanes can be used.

【００１４】緻密層は、例えば、ジルコニア、チタニ
ア、アルミナ、シリカ、ボロニア、アルカリシリケー
ト、アルミノシリケート、酸化スズ、ポリオルガノシロ
キサン、リン酸塩（鉛塩を除く）、重リン酸塩（鉛塩を
除く）、セリア、イットリア、セメント、炭酸カルシウ
ム（水和物）、硫酸カルシウム（水和物）、釉薬、プラ
スター、フッ素樹脂、アクリル樹脂、ポリエステル樹
脂、エポキシ樹脂、ポリカルボネート樹脂、熱硬化性樹
脂の群から選ばれる少なくとも１種を含む層で形成す
る。The dense layer is made of, for example, zirconia, titania, alumina, silica, boronia, alkali silicate, aluminosilicate, tin oxide, polyorganosiloxane, phosphate (excluding lead salts), and heavy phosphate (lead salts). Excluding), ceria, yttria, cement, calcium carbonate (hydrate), calcium sulfate (hydrate), glaze, plaster, fluororesin, acrylic resin, polyester resin, epoxy resin, polycarbonate resin, thermosetting resin And at least one layer selected from the group consisting of

【００１５】鉛選択捕捉性を有する物質としては、例え
ば、アパタイト、骨炭、有機キレート化合物、ゼオライ
ト、リン酸カルシウムの群から選ばれる１種以上が利用
できる。特に、アパタイト、骨炭、有機キレート化合物
は鉛の選択捕捉性に非常に優れるので好ましい。As the substance having a selective lead trapping property, for example, at least one selected from the group consisting of apatite, bone charcoal, organic chelate compounds, zeolite and calcium phosphate can be used. In particular, apatite, bone charcoal, and organic chelate compounds are preferable because they are very excellent in selectively capturing lead.

【００１６】結着剤硬化物としては、例えば、ジルコニ
ア、チタニア、アルミナ、シリカ、ボロニア、アルカリ
シリケート、アルミノシリケート、酸化スズ、ポリオル
ガノシロキサン、リン酸塩（鉛塩を除く）、重リン酸塩
（鉛塩を除く）、セリア、イットリア、セメント、炭酸
カルシウム（水和物）、硫酸カルシウム（水和物）、釉
薬、プラスター、フッ素樹脂、熱硬化性樹脂の群から選
ばれる少なくとも１種が利用できる。Examples of the cured binder include zirconia, titania, alumina, silica, boronia, alkali silicate, aluminosilicate, tin oxide, polyorganosiloxane, phosphates (excluding lead salts), and heavy phosphates. (Excluding lead salts), at least one selected from the group consisting of ceria, yttria, cement, calcium carbonate (hydrate), calcium sulfate (hydrate), glaze, plaster, fluororesin, and thermosetting resin it can.

【００１７】鉛の水中への溶出量は１０ｐｐｂ以下であ
るのが好ましい。また、本発明では、亜鉛と銅の水中溶
出量も抑制させることも可能である。亜鉛、銅の溶出量
は各々１００ｐｐｂ以下であるようにするのが好まし
い。The amount of lead dissolved in water is preferably 10 ppb or less. In the present invention, it is also possible to suppress the amount of zinc and copper eluted in water. It is preferable that the amounts of zinc and copper eluted are each 100 ppb or less.

【００１８】本発明の接水部材を作製する１つの方法
は、例えば、鉛を含有する銅合金基材上に、上記鉛選択
捕捉性を有する物質と結着剤を適用し、さらにその上に
撥水性物質の前駆体を適用した後に、加熱処理して結着
剤及び撥水性物質を硬化させることによる。鉛を含有す
る銅合金基材では、表面近傍の鉛濃度が内部より高い場
合も多く、その場合には、上記工程を行う前に予め鉛を
含有する銅合金基材表面部分の鉛成分をエッチングや研
削により除去しておいてもよい。ここで、適用方法に
は、スプレーコーティング法、ディップコーティング
法、印刷法、転写法等が好適に利用できる。結着剤とし
ては、金属アルコキシド、水ガラス、フリット等の釉薬
原料、石膏、石灰、硬化前の液状の樹脂組成物、モノマ
ー等が好適に利用できる。One method for producing the water-contacting member of the present invention is, for example, to apply the above-mentioned substance having a selective lead-capturing property and a binder onto a lead-containing copper alloy base material, and further apply After applying the precursor of the water-repellent substance, heat treatment is performed to cure the binder and the water-repellent substance. In a lead-containing copper alloy base material, the lead concentration in the vicinity of the surface is often higher than that in the inside, in which case, the lead component of the lead-containing copper alloy base material surface portion is etched before performing the above steps. Or may be removed by grinding. Here, as an application method, a spray coating method, a dip coating method, a printing method, a transfer method, or the like can be suitably used. As the binder, glaze raw materials such as metal alkoxide, water glass, and frit, gypsum, lime, a liquid resin composition before curing, and monomers can be suitably used.

【００１９】本発明の接水部材を作製する他の方法は、
例えば、鉛を含有する銅合金基材上に、金属アルコキシ
ドを適用し、さらにその上に撥水性物質を適用した後
に、加熱処理して金属アルコキシドの加水分解反応及び
脱水縮合反応を促進させて緻密な層を形成するとともに
撥水性物質の前駆体を硬化させることによる。鉛を含有
する銅合金基材では、表面近傍の鉛濃度が内部より高い
場合も多く、その場合には、上記工程を行う前に予め鉛
を含有する銅合金基材表面部分の鉛成分をエッチングや
研削により除去しておいてもよい。ここで、適用方法に
は、スプレーコーティング法、ディップコーティング
法、印刷法、転写法等が好適に利用できる。Another method of making the water contact member of the present invention is as follows.
For example, after applying a metal alkoxide on a copper alloy base material containing lead and further applying a water-repellent substance thereon, heat treatment is performed to accelerate the hydrolysis reaction and dehydration condensation reaction of the metal alkoxide, thereby obtaining a dense body. And hardening the precursor of the water-repellent substance. In a lead-containing copper alloy base material, the lead concentration in the vicinity of the surface is often higher than that in the inside, in which case, the lead component of the lead-containing copper alloy base material surface portion is etched before performing the above steps. Or may be removed by grinding. Here, as an application method, a spray coating method, a dip coating method, a printing method, a transfer method, or the like can be suitably used.

【００２０】撥水性物質の前駆体としては、例えば、平
均組成式ＲｐＳｉＸｑＯ（４−ｐ−ｑ）／２（式中、Ｒ
は、炭素数１〜１８の有機基、Ｘは炭素数１〜４のアル
コキシ基であり、ｐ及びｑは、０＜ｐ＜２、０＜ｑ＜
４、０＜ｐ＋ｑ＜４を満足する数である）で表される未
硬化のシリコーンや、ＲｒＳｉＸｓ（式中、Ｒは水素又
は炭素数１〜１８の有機基、Ｘは炭素数１〜４のアルコ
キシ基であり、ｒは１〜３の整数、ｓ＝４−ｒを満足す
る数である）で表されるシランが好適に利用できる。有
機基には、例えば、フルオロ基、フルオロオレフィン
基、フェニル基、メタクリロ基、アクリロ基、エポキシ
基、グリシドキシ基、オレフィン基、アミノ基、カルボ
キシル基、カルボニル基、メルカプト基等を含有する基
が利用できる。As a precursor of the water-repellent substance, for example, an average composition formula RpSiXqO (4-pq) / 2 (where R
Is an organic group having 1 to 18 carbon atoms, X is an alkoxy group having 1 to 4 carbon atoms, and p and q are 0 <p <2, 0 <q <
4, an uncured silicone represented by 0 <p + q <4) or RrSiXs (where R is hydrogen or an organic group having 1 to 18 carbon atoms, and X is a group having 1 to 4 carbon atoms). Which is an alkoxy group, r is an integer of 1 to 3, and s = 4-r). As the organic group, for example, a group containing a fluoro group, a fluoroolefin group, a phenyl group, a methacrylo group, an acrylo group, an epoxy group, a glycidoxy group, an olefin group, an amino group, a carboxyl group, a carbonyl group, a mercapto group, or the like is used. it can.

【００２１】金属アルコキシドとしては、シリコン、ジ
ルコニウム、チタン、アルミニウム、スズ等のアルコキ
シドが好適に利用可能である。As the metal alkoxide, alkoxides of silicon, zirconium, titanium, aluminum, tin and the like can be suitably used.

【００２２】[0022]

【発明の効果】本発明によれば、快削性を有するととも
に、鉛溶出防止性にも優れ、かつ水垢やスケールの付着
が生じにくく、腐食により緑青が発生しにくい接水部材
を提供することが可能となる。According to the present invention, there is provided a water-contacting member which has a free-cutting property, is excellent in preventing lead elution, hardly causes adhesion of scale and scale, and hardly generates patina due to corrosion. Becomes possible.

───────────────────────────────────────────────────── フロントページの続き (72)発明者 砥川 裕行 福岡県北九州市小倉北区中島２丁目１番１ 号 東陶機器株式会社内 Ｆターム(参考） 3H024 DA09 EA02 EB07 EC04 ED03 ED07 EE04 4K044 AA06 AB10 BA11 BA12 BA13 BA14 BA17 BA20 BA21 BB03 BC02 CA15 CA53 4K062 AA01 BC11 BC12 BC16 DA01 FA04 GA06  ────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroyuki Togawa 2-1-1, Nakajima, Kokurakita-ku, Kitakyushu-shi, Fukuoka F-term (reference) 3T024 DA09 EA02 EB07 EC04 ED03 ED07 EE04 4K044 AA06 AB10 BA11 BA12 BA13 BA14 BA17 BA20 BA21 BB03 BC02 CA15 CA53 4K062 AA01 BC11 BC12 BC16 DA01 FA04 GA06

Claims (12)

【特許請求の範囲】[Claims] 【請求項１】 鉛を含有する銅合金基材表面に、鉛溶出
防止層が形成されており、さらにその上に撥水性物質を
含む層が設けられていることを特徴とする接水部材。1. A water-contact member comprising a lead-eluting prevention layer formed on the surface of a lead-containing copper alloy base material, and a layer containing a water-repellent substance provided thereon. 【請求項２】 前記撥水性物質は、シリコーン又はフッ
素樹脂であることを特徴とする請求項１に記載の接水部
材。2. The water-contacting member according to claim 1, wherein the water-repellent substance is silicone or fluororesin. 【請求項３】 前記シリコーンは、加水分解性アルコキ
シシラン、加水分解性アルキルシラン、加水分解性フル
オロアルキルシランから選ばれる少なくとも１種の脱水
縮合物であることを特徴とする請求項２に記載の接水部
材。3. The silicone according to claim 2, wherein the silicone is at least one dehydration condensate selected from hydrolyzable alkoxysilanes, hydrolyzable alkylsilanes, and hydrolyzable fluoroalkylsilanes. Water contact member. 【請求項４】 前記鉛溶出防止層は、緻密層からなるこ
とを特徴とする請求項１〜３に記載の接水部材。4. The water contact member according to claim 1, wherein the lead elution preventing layer is formed of a dense layer. 【請求項５】 前記鉛溶出防止層は、鉛選択捕捉性を有
する物質を含むことを特徴とする請求項１〜４に記載の
接水部材。5. The water contact member according to claim 1, wherein the lead elution prevention layer contains a substance having a selective lead trapping property. 【請求項６】 前記鉛溶出防止層は、鉛選択捕捉性を有
する物質と結着剤硬化物とを含むことを特徴とする請求
項１〜５に記載の接水部材。6. The water contact member according to claim 1, wherein the lead elution preventing layer contains a substance having a selective lead trapping property and a cured binder. 【請求項７】 前記緻密層は、ジルコニア、チタニア、
アルミナ、シリカ、ボロニア、アルカリシリケート、ア
ルミノシリケート、酸化スズ、ポリオルガノシロキサ
ン、リン酸塩（鉛塩を除く）、重リン酸塩（鉛塩を除
く）、セリア、イットリア、セメント、炭酸カルシウム
（水和物）、硫酸カルシウム（水和物）、釉薬、プラス
ター、フッ素樹脂、熱硬化性樹脂の群から選ばれる少な
くとも１種を含む層であることを特徴とする請求項４〜
６に記載の接水部材。7. The dense layer is made of zirconia, titania,
Alumina, silica, boronia, alkali silicate, aluminosilicate, tin oxide, polyorganosiloxane, phosphate (excluding lead salts), biphosphate (excluding lead salts), ceria, yttria, cement, calcium carbonate (water 4) a layer containing at least one selected from the group consisting of a hydrate, a calcium sulfate (hydrate), a glaze, a plaster, a fluororesin, and a thermosetting resin.
7. The water contact member according to 6. 【請求項８】 前記鉛選択捕捉性を有する物質は、アパ
タイト、骨炭、有機キレート化合物、ゼオライト、リン
酸カルシウムの群から選ばれる１種以上であることを特
徴とする請求項５〜７に記載の接水部材。8. The contact according to claim 5, wherein the substance having a selective lead capturing property is at least one selected from the group consisting of apatite, bone charcoal, an organic chelate compound, zeolite, and calcium phosphate. Water member. 【請求項９】 前記結着剤硬化物は、ジルコニア、チタ
ニア、アルミナ、シリカ、ボロニア、アルカリシリケー
ト、アルミノシリケート、酸化スズ、ポリオルガノシロ
キサン、リン酸塩（鉛塩を除く）、重リン酸塩（鉛塩を
除く）、セリア、イットリア、セメント、炭酸カルシウ
ム（水和物）、硫酸カルシウム（水和物）、釉薬、プラ
スター、フッ素樹脂、熱硬化性樹脂の群から選ばれる少
なくとも１種であることを特徴とする請求項６〜８に記
載の接水部材。9. The cured product of the binder includes zirconia, titania, alumina, silica, boronia, alkali silicate, aluminosilicate, tin oxide, polyorganosiloxane, phosphate (excluding lead salt), and polyphosphate. (Excluding lead salts), at least one selected from the group consisting of ceria, yttria, cement, calcium carbonate (hydrate), calcium sulfate (hydrate), glaze, plaster, fluororesin, and thermosetting resin. The water contact member according to claim 6, wherein: 【請求項１０】 鉛の水中への溶出量が１０ｐｐｂ以下
であることを特徴とする請求項１〜９に記載の接水部
材。10. The water contact member according to claim 1, wherein the amount of lead dissolved into water is 10 ppb or less. 【請求項１１】 前記鉛を含有する銅合金は、青銅、黄
銅、真鍮のうちのいずれかであることを特徴とする請求
項１〜１０に記載の接水部材。11. The water-contacting member according to claim 1, wherein the lead-containing copper alloy is any one of bronze, brass, and brass. 【請求項１２】 前記接水部材は、水栓金具、水道配
管、配管バルブ、水道メーター、給湯機用熱交換器、ポ
ンプ用品、配管継ぎ手、水温センサ保護管、スプリンク
ラー用部品、噴霧ノズル、ホース継ぎ手、太陽熱温水
器、ボールタップ装置、給水ヘッダーのうちのいずれか
であることを特徴とする請求項１〜１１に記載の接水部
材。12. The water contact member includes a faucet, a water pipe, a pipe valve, a water meter, a heat exchanger for a water heater, a pump article, a pipe joint, a water temperature sensor protection pipe, a sprinkler part, a spray nozzle, and a hose. The water contact member according to any one of claims 1 to 11, wherein the water contact member is any one of a joint, a solar water heater, a ball tap device, and a water supply header.
JP11222377A 1999-08-05 1999-08-05 Member in contact with water Pending JP2001049464A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
JP11222377A JP2001049464A (en) 1999-08-05 1999-08-05 Member in contact with water

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007060295A1 (en) * 2005-11-28 2007-05-31 Planar Systems Oy Method for preventing metal leaching from copper and its alloys
JP2012041635A (en) * 2010-11-22 2012-03-01 Kitz Corp Method for preventing elution of copper and zinc of copper alloy piping equipment such as valve and pipe fitting, and copper alloy piping equipment made using the method, and film forming agent

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007060295A1 (en) * 2005-11-28 2007-05-31 Planar Systems Oy Method for preventing metal leaching from copper and its alloys
EP1957722A1 (en) * 2005-11-28 2008-08-20 Beneq Oy Method for preventing metal leaching from copper and its alloys
EP1957722A4 (en) * 2005-11-28 2010-11-24 Beneq Oy Method for preventing metal leaching from copper and its alloys
JP2012041635A (en) * 2010-11-22 2012-03-01 Kitz Corp Method for preventing elution of copper and zinc of copper alloy piping equipment such as valve and pipe fitting, and copper alloy piping equipment made using the method, and film forming agent
WO2012070256A1 (en) * 2010-11-22 2012-05-31 株式会社キッツ Method for preventing dissolution of copper and zinc from copper alloy piping member such as valve or pipe joint, copper alloy piping member using same, and film forming agent
GB2499746A (en) * 2010-11-22 2013-08-28 Kitz Corp Method for preventing dissolution of copper and zinc from copper alloy piping member such as valve or pipe joint, copper alloy piping member using same,
US8936048B2 (en) 2010-11-22 2015-01-20 Kitz Corporation Copper and zinc elution preventing method of copper-alloy-made plumbing instrument including valve and pipe joint, copper-alloy-made plumbing instrument using the method, and film-forming agent
GB2499746B (en) * 2010-11-22 2016-11-02 Kitz Corp Method for preventing Cu and Zn elution from a copper-alloy-made plumbing instrument using a film forming organic substance containing unsaturated fatty acids

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