JP5828172B2

JP5828172B2 - Gas leak repair method for gas piping and gas leak repair member for gas piping

Info

Publication number: JP5828172B2
Application number: JP2011134470A
Authority: JP
Inventors: 酒井　史郎; 史郎酒井; 佐竹　志伸; 志伸佐竹
Original assignee: Tokyo Gas Co Ltd
Current assignee: Tokyo Gas Co Ltd
Priority date: 2011-06-16
Filing date: 2011-06-16
Publication date: 2015-12-02
Anticipated expiration: 2031-06-16
Also published as: JP2013002561A

Description

本発明は、ガス配管の管壁からのガス漏れ箇所を修理する方法及びガス配管のガス漏れ箇所修理部材に関する。 The present invention relates to a gas leakage portion repairing member methods及beauty gas pipe to repair the gas leakage location from the tube wall of the gas pipe.

一般的に、都市ガス又はプロパンガス等を供給する場合、ガス導管の一つとして鋼管が使用されている。そして、その鋼管からなるガス配管が、高温多湿な配管環境や長期使用により、腐食して管壁に孔が開いたり、地中埋設管の場合は土木工事により不測に孔を開けてしまったり、また、建築工事の場合は、ドリルなどにより不測に孔を開けてしまい、管壁からガス漏れが発生することがある。
このような場合、配管の更新を行わなければならないが、ガスが供給されている活管状態では、早急にガス漏れを止めなければならず、その管壁の孔の開いた箇所に粘着テープを巻くか、もしくは、エポキシ樹脂等の合成樹脂接着剤等を、管壁に塗布してその外側からブチルゴムとポリエステルフィルムからなるシールテープを巻く等の方法が行われていた。尚、前記配管としては、鋼管のみならず、鋳鉄管やポリエチレン管も多く使用され、それらも修理の対象となる。 Generally, when supplying city gas or propane gas, a steel pipe is used as one of gas conduits. And, the gas pipe made of the steel pipe corrodes and opens a hole in the pipe wall due to a hot and humid piping environment and long-term use, or in the case of underground buried pipe, it opens unexpectedly by civil engineering work, Moreover, in the case of construction work, a hole may be unexpectedly opened by a drill or the like, and gas leakage may occur from the pipe wall.
In such a case, the pipe must be renewed, but in a live pipe state in which gas is supplied, gas leakage must be stopped immediately, and an adhesive tape is applied to the hole in the pipe wall. There has been a method of winding or applying a synthetic resin adhesive such as an epoxy resin to the tube wall and winding a sealing tape made of butyl rubber and a polyester film from the outside. As the piping, not only steel pipes but also cast iron pipes and polyethylene pipes are often used, and they are also subject to repair.

上述した方法では、前者の場合は、管壁と粘着テープとの密着性が水分や砂の混入により低下したり、管壁等に粘着テープが一時的に密着したとしても、管壁に開いた孔からのガス圧により、管壁と粘着テープとの間にガス漏洩路が形成される虞があり、また、後者の場合は、エポキシ樹脂などの合成樹脂接着剤の硬化に長時間を要し、未硬化状態の合成樹脂接着剤中に、ガス圧によるガス漏れ流路が形成されたりして、持続的にガス漏れを止めることは困難であった。 In the above-described method, in the former case, the adhesiveness between the tube wall and the adhesive tape is lowered due to mixing of moisture or sand, or even if the adhesive tape is temporarily adhered to the tube wall or the like, it opens to the tube wall. The gas pressure from the hole may cause a gas leakage path between the tube wall and the adhesive tape. In the latter case, it takes a long time to cure the synthetic resin adhesive such as epoxy resin. In the uncured synthetic resin adhesive, it has been difficult to stop gas leakage continuously by forming a gas leakage channel by gas pressure.

従って、本発明の目的は、上記問題点を解消し、短時間で鋼管、鋳鉄管、ポリエチレン管の管壁等からのガス漏れを止めて、しかも、持続的にその状態を維持できるようにするところにある。 Accordingly, an object of the present invention is to solve the above-mentioned problems, stop gas leakage from a steel pipe, cast iron pipe, polyethylene pipe wall, etc. in a short time, and maintain the state continuously. By the way.

本発明の第１のガス配管のガス漏れ箇所修理方法の特徴構成は、予め無着色透明ポリエチレンフィルムからなる透明樹脂フィルムの一方の面に、（Ａ）ビスフェノールＡ型エポキシアクリレート３０〜４０質量部、（Ｂ）チタノセン化合物１．０〜２．０質量部、（Ｃ）充填材３７〜４８質量部を混合した光硬化性樹脂組成物を塗布して未硬化樹脂層付着部を形成しておいて、その未硬化樹脂層付着部をガス配管における管外壁のガス漏れ箇所に貼着させて被覆部を形成し、前記透明樹脂フィルムをその外方から前記管外壁側に押付けて気密性を維持しながら、前記被覆部に前記透明樹脂フィルムを通して光を照射して前記光硬化性樹脂組成物を硬化反応させた後に、前記透明樹脂フィルムを剥離して、前記管外壁のガス漏れ箇所に対するシール部を形成するところにある。 The characteristic configuration of the gas leakage spot repairing method of the first gas pipe of the present invention is as follows . (A) 30-40 parts by mass of (A) bisphenol A type epoxy acrylate on one surface of a transparent resin film made of an uncolored transparent polyethylene film in advance . (B) A photocurable resin composition in which 1.0 to 2.0 parts by mass of a titanocene compound and (C) 37 to 48 parts by mass of a filler are mixed to form an uncured resin layer adhering part. Then, the uncured resin layer adhering portion is adhered to the gas leakage location on the outer wall of the pipe in the gas pipe to form a covering portion, and the transparent resin film is pressed from the outside to the outer tube wall side to maintain airtightness. while, said by irradiating light through the transparent resin film covering portion the photocurable resin composition after curing reaction, by peeling off the transparent resin film, sheet against gas leakage portion of the tube outer wall It is in place to form the pole tip.

本発明の第１の特徴構成によれば、予め透明樹脂フィルムの一方の面に光硬化性樹脂組成物を塗布して未硬化樹脂層付着部を形成しておくことで、いつでも短時間でガス配管の管壁に貼着することができ、管外壁に被覆部を形成して管壁からのガス漏れを止めることができる。その上、透明樹脂フィルムに塗布した光硬化性樹脂組成物に対し、透明樹脂フィルムを通して光を照射して硬化反応させることにより、管壁等に形成されるガス漏れ孔からのガス圧に持続的に対抗できるシール部を、短時間で形成できる。
従って、短時間で管壁からのガス漏れを止めて、しかも、持続的にその状態を維持できる。 According to the first characteristic configuration of the present invention, by previously applying the photocurable resin composition on one surface of the transparent resin film to form the uncured resin layer adhering portion, the gas can be quickly obtained in a short time. It can be attached to the pipe wall of the pipe, and a gas leakage from the pipe wall can be stopped by forming a covering portion on the pipe outer wall. In addition, the photocurable resin composition applied to the transparent resin film is irradiated with light through the transparent resin film to cause a curing reaction, thereby maintaining the gas pressure from the gas leakage holes formed in the tube wall and the like. Can be formed in a short time.
Therefore, gas leakage from the tube wall can be stopped in a short time and the state can be maintained continuously.

透明樹脂フィルムを通して光を照射して光硬化性樹脂組成物を硬化反応させた後に、透明樹脂フィルムを剥離することにより、被覆部は、その表面を切削したりして滑らかに整えることができ、その後の塗装仕上げ加工などが良好に行える。
また、光硬化性樹脂組成物を硬化させることにより、防食性が高まる。特に地中埋設管で付近に温泉などがある場合、イオウ成分やアルカリ成分、酸成分が多く、ガス管が腐食する場合が多いが、この光硬化性樹脂組成物を塗布し硬化させたガス管は、腐食に強く錆が発生しにくくなる。 By irradiating light through the transparent resin film and curing reaction of the photocurable resin composition, by peeling off the transparent resin film, the covering part can be smoothly prepared by cutting the surface, Subsequent paint finishing can be performed well.
Moreover, anticorrosion property improves by hardening a photocurable resin composition. In particular, when there are hot springs in the vicinity of underground pipes, there are many sulfur components, alkali components, and acid components, and gas pipes are often corroded, but gas pipes that have been coated and cured with this photo-curable resin composition. Is strong against corrosion and less likely to generate rust.

ビスフェノールＡ型エポキシアクリレート３０〜４０質量部を主材として使用することにより、耐水性、耐候性を有し、機械的強度の大きい被覆部ができ、チタノセン化合物１．０〜２．０質量部を光重合開始剤として使用することで可視光の波長で重合反応を開始して、迅速に硬化させることができ、また、充填材３７〜４８質量部を混合したことにより、全体の流動性を抑えて管外壁のガス漏れ箇所に、光硬化性樹脂組成物を密着保持させることができる。
しかも、上記組成物から形成されるシール部は、一般的に残存するアルコールや、エポキシ樹脂の硬化剤から発生するアミン臭などのガス検知器に感応する成分が残存しにくく、ガス検知器に感応しないために、被覆部形成後に、迅速にガス漏れ検査を行なって、補修箇所のガス漏洩が止まっている状態の確認をできるようになった。 By using 30 to 40 parts by mass of bisphenol A type epoxy acrylate as a main material, a coated part having water resistance and weather resistance and high mechanical strength can be formed, and 1.0 to 2.0 parts by mass of a titanocene compound can be obtained. By using it as a photopolymerization initiator, it can start the polymerization reaction at the wavelength of visible light and can be quickly cured. Also, by mixing 37 to 48 parts by mass of filler, the overall fluidity is suppressed. Thus, the photocurable resin composition can be held in close contact with the gas leakage location on the outer wall of the tube.
In addition, the seal portion formed from the above composition is less susceptible to gas detectors, such as generally remaining alcohol and components sensitive to gas detectors such as amine odor generated from epoxy resin curing agents. Therefore, after the covering portion is formed, the gas leak inspection can be quickly performed to confirm the state where the gas leakage at the repaired portion has stopped.

本発明の第２の特徴構成は、光の波長が４００〜６５０ｎｍの光源を有し、測光量１５０ルーメンス以上を有する照明器具で前記被覆部に照射するところにある。 The 2nd characteristic structure of this invention exists in the place which irradiates the said coating | coated part with the lighting fixture which has a light source whose wavelength of light is 400-650 nm, and has a photometric quantity of 150 lumens or more.

本発明の第２の特徴構成によれば、１２０ルーメンスでも硬化をさせることは可能であるが、ガス漏れを活管状態で緊急に止めるためには、硬化時間を短くせねばならないため、測光量は１５０ルーメンス以上が適している。尚、これ以上高い光量では、硬化性に大きな差がない。従って、可視光域の簡単な照明器具を使用して光硬化性樹脂組成物を迅速に硬化反応させ、実用性及び取扱い上の安全性を向上させることができる。 According to the second characteristic configuration of the present invention, it is possible to cure even with 120 lumens, but in order to urgently stop the gas leakage in the active tube state, the curing time must be shortened. 150 lumens or more is suitable. It should be noted that there is no significant difference in curability when the light quantity is higher than this. Therefore, the photocurable resin composition can be rapidly cured using a simple lighting device in the visible light range, and the practicality and safety in handling can be improved.

本発明の第３のガス配管のガス漏れ箇所修理部材の特徴構成は、無着色透明ポリエチレンフィルムからなる透明樹脂フィルムの一方の面に、未硬化の状態で（Ａ）ビスフェノールＡ型エポキシアクリレート３０〜４０質量部、（Ｂ）チタノセン化合物１．０〜２．０質量部、（Ｃ）充填材３７〜４８質量部を混合した光硬化性樹脂組成物を塗布してあるところにある。 The characteristic configuration of the gas leakage spot repair member of the third gas pipe of the present invention is (A) bisphenol A type epoxy acrylate 30 to (A) in an uncured state on one surface of a transparent resin film made of an uncolored transparent polyethylene film. 40 parts by mass, (B) 1.0 to 2.0 parts by mass of a titanocene compound, and (C) 37 to 48 parts by mass of a filler are coated with a photocurable resin composition.

本発明の第３の特徴構成によれば、無着色透明ポリエチレンフィルムからなる透明樹脂フィルムの一方の面に未硬化の状態で（Ａ）ビスフェノールＡ型エポキシアクリレート３０〜４０質量部、（Ｂ）チタノセン化合物１．０〜２．０質量部、（Ｃ）充填材３７〜４８質量部を混合した光硬化性樹脂組成物を塗布してあるガス漏れ箇所修理部材を、ガス配管のガス漏れ箇所に貼着させて被覆することで、応急にガス漏れを抑えることができながら、その透明樹脂フィルム越しに光を照射することで、光硬化性樹脂組成物が硬化反応してそのガス漏れ抑制状態を維持できるようになる。
従って、短時間でガス漏れ箇所の修理ができる。 According to the third feature of the present invention, (A) 30 to 40 parts by mass of (A) bisphenol A type epoxy acrylate in an uncured state on one surface of a transparent resin film made of an uncolored transparent polyethylene film , and (B) titanocene. A gas leak point repair member coated with a photocurable resin composition in which 1.0 to 2.0 parts by mass of the compound and (C) 37 to 48 parts by mass of the filler are mixed is pasted on the gas leak point of the gas pipe. By covering and covering, the gas leakage can be suppressed promptly, but by irradiating light through the transparent resin film, the photocurable resin composition undergoes a curing reaction and maintains its gas leakage suppression state. become able to.
Therefore, the gas leak point can be repaired in a short time.

（ａ）ガス漏れ箇所に光硬化性樹脂組成物を貼着する前の状態説明図、（ｂ）ガス漏れ箇所に光硬化性樹脂組成物を貼着した後の状態説明図である。(A) State explanatory drawing before sticking a photocurable resin composition to a gas leak location, (b) State explanatory drawing after sticking a photocurable resin composition to a gas leak location. （ａ）光硬化性樹脂組成物を貼着した状態の部分縦断面図、（ｂ）光硬化性樹脂組成物に光照射する状態の部分縦断面図、（ｃ）透明樹脂フィルムを剥離した後の部分縦断面図である。(A) Partial longitudinal sectional view of a state where a photocurable resin composition is adhered, (b) Partial longitudinal sectional view of a state where light is irradiated to the photocurable resin composition, (c) After peeling a transparent resin film FIG. 各光硬化性樹脂（１）〜（１１）の組成を表す図表である。It is a chart showing the composition of each photocurable resin (1)-(11).

以下に本発明の実施の形態を図面に基づいて説明する。
〔実施形態１〕
ガス配管３の管壁に形成されるガス漏れ箇所４を修理してガス漏れを止める方法として、図１〜図２に示すように、予め透明樹脂フィルム１の一方の面に光硬化性樹脂組成物２を塗布して未硬化樹脂層付着部を形成しておき（図１（ａ））、その未硬化樹脂層付着部をガス配管３における管外壁のガス漏れ箇所４に貼着させて被覆部を形成し（図２（ａ））、透明樹脂フィルム１をその外方から管外壁側に押付けて圧入して気密性を維持しながら、被覆部に透明樹脂フィルム１を通して光を照射して光硬化性樹脂組成物２を硬化反応させ（図１（ｂ）、図２（ｂ））、管外壁のガス漏れ箇所４に対するシール部を形成し、その後、透明樹脂フィルム１は剥離する（図２（ｃ））。 Embodiments of the present invention will be described below with reference to the drawings.
Embodiment 1
As a method of repairing the gas leak location 4 formed on the pipe wall of the gas pipe 3 and stopping the gas leak, as shown in FIGS. 1 to 2, a photocurable resin composition is previously formed on one surface of the transparent resin film 1. An object 2 is applied to form an uncured resin layer adhering portion (FIG. 1 (a)), and the uncured resin layer adhering portion is adhered to a gas leaking portion 4 on the outer wall of the gas pipe 3 (FIG. 2 (a)), the transparent resin film 1 is pressed from the outside toward the outer wall of the tube and pressed to maintain the airtightness, and the cover portion is irradiated with light through the transparent resin film 1. The photocurable resin composition 2 is subjected to a curing reaction (FIGS. 1B and 2B) to form a seal portion for the gas leaking portion 4 on the outer wall of the tube, and then the transparent resin film 1 is peeled (FIG. 1). 2 (c)).

光硬化性樹脂組成物２として、図３に示す表のように、光硬化性樹脂（１）〜（１１）の各種異なった組成物を、製造例１〜製造例１１に基づいて製作準備した。尚、図３において、各数値は、質量部を表す。また、ビスコート＃１９２はフェノキシエチルアクリレート（大阪有機化学株式会社製）を示し、ＫＡＹＡＭＥＲＰＭ−２１はエチレンオキサイド変性リン酸ジメタクリレート（日本化薬株式会社製）を示し、ＱｕａｎｔａｃｕｒｅＩＴＸは、イソプロピルチオキサントン（日本シイベルヘグナー株式会社製）を示す。 As the photocurable resin composition 2, as shown in the table of FIG. 3, various different compositions of the photocurable resins (1) to (11) were prepared for production based on Production Examples 1 to 11. . In addition, in FIG. 3, each numerical value represents a mass part. In addition, biscoat # 192 represents phenoxyethyl acrylate (produced by Osaka Organic Chemical Co., Ltd.), KAYAMER PM-21 represents ethylene oxide-modified phosphoric acid dimethacrylate (produced by Nippon Kayaku Co., Ltd.), and Quantacure ITX represents isopropylthioxanthone (produced in Japan). Siebel Hegner Co., Ltd.).

製造例１
ビスフェノールＡ型エポキシアクリレート樹脂３０．０質量部（ＭｉｗｏｎＣｏｍｅｒｃｉａｌＣｏ.Ｌｔｄ製品名ＭｉｒａｍｅｒＰＥ２１０）、フェノキシエチルアクリレート２０．０質量部（大阪有機化学株式会社製品名ビスコート＃１９２）、エチレンオキサイド変性リン酸ジメタクリレート１．０質量部（日本化薬株式会社製品名ＫＡＹＡＭＥＲＰＭ−２１）、チタノセン化合物１．０質量部（チバ・ジャパン株式会社製製品名ＩＲＧＡＣＵＲＥ７８４）、充填剤４８．０質量部（製品名ＮＫ−６４富士タルク株式会社製）を、暗室内で、ミキサーで混錬して、パテ状物（光硬化性樹脂（１））を得た。 Production Example 1
30.0 parts by mass of bisphenol A type epoxy acrylate resin (product name: Miramer PE210 manufactured by Miwon Commercial Co. Ltd), 20.0 parts by mass of phenoxyethyl acrylate (product name: Biscoat # 192 manufactured by Osaka Organic Chemical Co., Ltd.), ethylene oxide-modified diphosphate 1.0 part by weight of methacrylate (product name KAYAMER PM-21, manufactured by Nippon Kayaku Co., Ltd.), 1.0 part by weight of titanocene compound (product name: IRGACURE 784, manufactured by Ciba Japan Co., Ltd.), 48.0 parts by weight (product name) NK-64 manufactured by Fuji Talc Co., Ltd. was kneaded with a mixer in a dark room to obtain a putty-like product (photocurable resin (1)).

製造例２
ビスフェノールＡ型エポキシアクリレート樹脂４０．０質量部（ＭｉｗｏｎＣｏｍｅｒｃｉａｌＣｏ.Ｌｔｄ製品名ＭｉｒａｍｅｒＰＥ２１０）、フェノキシエチルアクリレート２０．０質量部（大阪有機化学株式会社製品名ビスコート＃１９２）、エチレンオキサイド変性リン酸ジメタクリレート１．０質量部（日本化薬株式会社製品名ＫＡＹＡＭＥＲＰＭ−２１）、チタノセン化合物１．０質量部（チバ・ジャパン株式会社製製品名ＩＲＧＡＣＵＲＥ７８４）、充填剤３８．０質量部（製品名ＮＫ−６４富士タルク株式会社製）を、暗室内で、ミキサーで混錬して、パテ状物（光硬化性樹脂（２））を得た。 Production Example 2
Bisphenol A type epoxy acrylate resin 40.0 parts by mass (product name Miramer PE210 manufactured by Miwon Commercial Co. Ltd), 20.0 parts by mass of phenoxyethyl acrylate (product name Biscoat # 192 manufactured by Osaka Organic Chemical Co., Ltd.), ethylene oxide modified diphosphate 1.0 part by weight of methacrylate (product name KAYAMER PM-21, manufactured by Nippon Kayaku Co., Ltd.), 1.0 part by weight of titanocene compound (product name: IRGACURE 784, manufactured by Ciba Japan Co., Ltd.), 38.0 parts by weight (product name) NK-64 manufactured by Fuji Talc Co., Ltd. was kneaded with a mixer in a dark room to obtain a putty-like product (photocurable resin (2)).

製造例３
ビスフェノールＡ型エポキシアクリレート樹脂３０．０質量部（ＭｉｗｏｎＣｏｍｅｒｃｉａｌＣｏ.Ｌｔｄ製品名ＭｉｒａｍｅｒＰＥ２１０）、フェノキシエチルアクリレート２０．０質量部（大阪有機化学株式会社製品名ビスコート＃１９２）、エチレンオキサイド変性リン酸ジメタクリレート１．０質量部（日本化薬株式会社製品名ＫＡＹＡＭＥＲＰＭ−２１）、チタノセン化合物１．０質量部（チバ・ジャパン株式会社製製品名ＩＲＧＡＣＵＲＥ７８４）、イソプロピルチオキサントン０．５質量部（日本シイベルヘグナー株式会社製品名ＱｕａｎｔａｃｕｒｅＩＴＸ）、トリエタノールアミン０．５質量部（昭和化学株式会社製）、充填剤４７．０質量部（製品名ＮＫ−６４富士タルク株式会社製）を、暗室内で、ミキサーで混錬して、パテ状物（光硬化性樹脂（３））を得た。 Production Example 3
30.0 parts by mass of bisphenol A type epoxy acrylate resin (product name: Miramer PE210 manufactured by Miwon Commercial Co. Ltd), 20.0 parts by mass of phenoxyethyl acrylate (product name: Biscoat # 192 manufactured by Osaka Organic Chemical Co., Ltd.), ethylene oxide-modified diphosphate 1.0 part by weight of methacrylate (product name KAYAMER PM-21, manufactured by Nippon Kayaku Co., Ltd.), 1.0 part by weight of titanocene compound (product name: IRGACURE 784, manufactured by Ciba Japan Co., Ltd.), 0.5 part by weight of isopropylthioxanthone (Shibel Hegner, Japan) Product name Quantacure ITX), 0.5 parts by mass of triethanolamine (made by Showa Chemical Co., Ltd.), 47.0 parts by mass of filler (product name: NK-64 made by Fuji Talc Co., Ltd.), It knead | mixed with the mixer and the putty-like thing (photocurable resin (3)) was obtained.

製造例４
ビスフェノールＡ型エポキシアクリレート樹脂４０．０質量部（ＭｉｗｏｎＣｏｍｅｒｃｉａｌＣｏ.Ｌｔｄ製品名ＭｉｒａｍｅｒＰＥ２１０）、フェノキシエチルアクリレート２０．０質量部（大阪有機化学株式会社製品名ビスコート＃１９２）、エチレンオキサイド変性リン酸ジメタクリレート１．０質量部（日本化薬株式会社製品名ＫＡＹＡＭＥＲＰＭ−２１）、チタノセン化合物１．０質量部（チバ・ジャパン株式会社製製品名ＩＲＧＡＣＵＲＥ７８４）、イソプロピルチオキサントン０．５質量部（日本シイベルヘグナー株式会社製品名ＱｕａｎｔａｃｕｒｅＩＴＸ）、トリエタノールアミン０．５質量部（昭和化学株式会社製）、充填剤３７．０質量部（製品名ＮＫ−６４富士タルク株式会社製）を、暗室内で、ミキサーで混錬して、パテ状物（光硬化性樹脂（４））を得た。 Production Example 4
Bisphenol A type epoxy acrylate resin 40.0 parts by mass (product name Miramer PE210 manufactured by Miwon Commercial Co. Ltd), 20.0 parts by mass of phenoxyethyl acrylate (product name Biscoat # 192 manufactured by Osaka Organic Chemical Co., Ltd.), ethylene oxide modified diphosphate 1.0 part by weight of methacrylate (product name KAYAMER PM-21, manufactured by Nippon Kayaku Co., Ltd.), 1.0 part by weight of titanocene compound (product name: IRGACURE 784, manufactured by Ciba Japan Co., Ltd.), 0.5 part by weight of isopropylthioxanthone (Shibel Hegner, Japan) Product name Quantacure ITX), 0.5 parts by mass of triethanolamine (made by Showa Chemical Co., Ltd.), 37.0 parts by mass of filler (product name: NK-64 made by Fuji Talc Co., Ltd.), It knead | mixed with the mixer and obtained the putty-like thing (photocurable resin (4)).

製造例５
ビスフェノールＡ型エポキシアクリレート樹脂３０．０質量部（ＭｉｗｏｎＣｏｍｅｒｃｉａｌＣｏ.Ｌｔｄ製品名ＭｉｒａｍｅｒＰＥ２１０）、フェノキシエチルアクリレート２０．０質量部（大阪有機化学株式会社製品名ビスコート＃１９２）、エチレンオキサイド変性リン酸ジメタクリレート１．０質量部（日本化薬株式会社製品名ＫＡＹＡＭＥＲＰＭ−２１）、チタノセン化合物２．０質量部（チバ・ジャパン株式会社製製品名ＩＲＧＡＣＵＲＥ７８４）、イソプロピルチオキサントン０．５質量部（日本シイベルヘグナー株式会社製品名ＱｕａｎｔａｃｕｒｅＩＴＸ）、トリエタノールアミン０．５質量部（昭和化学株式会社製）、充填剤４６．０質量部（製品名ＮＫ−６４富士タルク株式会社製）を、暗室内で、ミキサーで混錬して、パテ状物（光硬化性樹脂（５））を得た。 Production Example 5
30.0 parts by mass of bisphenol A type epoxy acrylate resin (product name: Miramer PE210 manufactured by Miwon Commercial Co. Ltd), 20.0 parts by mass of phenoxyethyl acrylate (product name: Biscoat # 192 manufactured by Osaka Organic Chemical Co., Ltd.), ethylene oxide-modified diphosphate Methacrylate 1.0 parts by mass (Nippon Kayaku Co., Ltd., product name KAYAMER PM-21), titanocene compound 2.0 parts by mass (Ciba Japan Co., Ltd., product name IRGACURE 784), isopropylthioxanthone 0.5 parts by mass (Nippon Shibel Hegner) Product name Quantacure ITX), 0.5 parts by mass of triethanolamine (made by Showa Chemical Co., Ltd.), 46.0 parts by mass of filler (product name: NK-64 made by Fuji Talc Co., Ltd.) It knead | mixed with the mixer and obtained the putty-like thing (photocurable resin (5)).

製造例６
ビスフェノールＡ型エポキシアクリレート樹脂３０．０質量部（ＭｉｗｏｎＣｏｍｅｒｃｉａｌＣｏ.Ｌｔｄ製品名ＭｉｒａｍｅｒＰＥ２１０）、フェノキシエチルアクリレート２０．０質量部（大阪有機化学株式会社製品名ビスコート＃１９２）、エチレンオキサイド変性リン酸ジメタクリレート１．０質量部（日本化薬株式会社製品名ＫＡＹＡＭＥＲＰＭ−２１）、チタノセン化合物０．８質量部（チバ・ジャパン株式会社製製品名ＩＲＧＡＣＵＲＥ７８４）、イソプロピルチオキサントン０．５質量部（日本シイベルヘグナー株式会社製品名ＱｕａｎｔａｃｕｒｅＩＴＸ）、トリエタノールアミン０．５質量部（昭和化学株式会社製）、充填剤４７．２質量部（製品名ＮＫ−６４富士タルク株式会社製）を、暗室内で、ミキサーで混錬して、パテ状物（光硬化性樹脂（６））を得た。 Production Example 6
30.0 parts by mass of bisphenol A type epoxy acrylate resin (product name: Miramer PE210 manufactured by Miwon Commercial Co. Ltd), 20.0 parts by mass of phenoxyethyl acrylate (product name: Biscoat # 192 manufactured by Osaka Organic Chemical Co., Ltd.), ethylene oxide-modified diphosphate Methacrylate 1.0 parts by mass (Nippon Kayaku Co., Ltd., product name KAYAMER PM-21), titanocene compound 0.8 parts by mass (Ciba Japan Co., Ltd., product name IRGACURE 784), isopropylthioxanthone 0.5 parts by mass (Nippon Shibel Hegner) Product name Quantacure ITX), 0.5 parts by mass of triethanolamine (made by Showa Chemical Co., Ltd.), 47.2 parts by mass of filler (product name: NK-64 made by Fuji Talc Co., Ltd.), It knead | mixed with the mixer and the putty-like thing (photocurable resin (6)) was obtained.

製造例７
ビスフェノールＡ型エポキシアクリレート樹脂３０．０質量部（ＭｉｗｏｎＣｏｍｅｒｃｉａｌＣｏ.Ｌｔｄ製品名ＭｉｒａｍｅｒＰＥ２１０）、フェノキシエチルアクリレート２０．０質量部（大阪有機化学株式会社製品名ビスコート＃１９２）、エチレンオキサイド変性リン酸ジメタクリレート１．０質量部（日本化薬株式会社製品名ＫＡＹＡＭＥＲＰＭ−２１）、チタノセン化合物０．４質量部（チバ・ジャパン株式会社製製品名ＩＲＧＡＣＵＲＥ７８４）、充填剤４８．６質量部（製品名ＮＫ−６４富士タルク株式会社製）を、暗室内で、ミキサーで混錬して、パテ状物（光硬化性樹脂（７））を得た。 Production Example 7
30.0 parts by mass of bisphenol A type epoxy acrylate resin (product name: Miramer PE210 manufactured by Miwon Commercial Co. Ltd), 20.0 parts by mass of phenoxyethyl acrylate (product name: Biscoat # 192 manufactured by Osaka Organic Chemical Co., Ltd.), ethylene oxide-modified diphosphate Methacrylate 1.0 parts by mass (Nippon Kayaku Co., Ltd., product name KAYAMER PM-21), titanocene compound 0.4 parts by mass (Ciba Japan Co., Ltd. product name IRGACURE 784), filler 48.6 parts by mass (product name) NK-64 manufactured by Fuji Talc Co., Ltd. was kneaded with a mixer in a dark room to obtain a putty-like product (photocurable resin (7)).

製造例８
ビスフェノールＡ型エポキシアクリレート樹脂３０．０質量部（ＭｉｗｏｎＣｏｍｅｒｃｉａｌＣｏ.Ｌｔｄ製品名ＭｉｒａｍｅｒＰＥ２１０）、フェノキシエチルアクリレート２０．０質量部（大阪有機化学株式会社製品名ビスコート＃１９２）、エチレンオキサイド変性リン酸ジメタクリレート１．０質量部（日本化薬株式会社製品名ＫＡＹＡＭＥＲＰＭ−２１）、チタノセン化合物２．５質量部（チバ・ジャパン株式会社製製品名ＩＲＧＡＣＵＲＥ７８４）、充填剤４６．５質量部（製品名ＮＫ−６４富士タルク株式会社製）を、暗室内で、ミキサーで混錬して、パテ状物（光硬化性樹脂（８））を得た。 Production Example 8
30.0 parts by mass of bisphenol A type epoxy acrylate resin (product name: Miramer PE210 manufactured by Miwon Commercial Co. Ltd), 20.0 parts by mass of phenoxyethyl acrylate (product name: Biscoat # 192 manufactured by Osaka Organic Chemical Co., Ltd.), ethylene oxide-modified diphosphate Methacrylate 1.0 parts by mass (Nippon Kayaku Co., Ltd., product name KAYAMER PM-21), titanocene compound 2.5 parts by mass (Ciba Japan Co., Ltd., product name IRGACURE 784), filler 46.5 parts by mass (product name) NK-64 manufactured by Fuji Talc Co., Ltd. was kneaded with a mixer in a dark room to obtain a putty-like product (photocurable resin (8)).

製造例９
ビスフェノールＡ型エポキシアクリレート樹脂５５．０質量部（ＭｉｗｏｎＣｏｍｅｒｃｉａｌＣｏ.Ｌｔｄ製品名ＭｉｒａｍｅｒＰＥ２１０）、フェノキシエチルアクリレート５．０質量部（大阪有機化学株式会社製品名ビスコート＃１９２）、エチレンオキサイド変性リン酸ジメタクリレート１．０質量部（日本化薬株式会社製品名ＫＡＹＡＭＥＲＰＭ−２１）、チタノセン化合物１．０質量部（チバ・ジャパン株式会社製製品名ＩＲＧＡＣＵＲＥ７８４）、充填剤３８．０質量部（製品名ＮＫ−６４富士タルク株式会社製）を、暗室内で、ミキサーで混錬して、パテ状物（光硬化性樹脂（９））を得た。 Production Example 9
55.0 parts by mass of bisphenol A type epoxy acrylate resin (product name: Miramer PE210 manufactured by Miwon Commercial Co. Ltd), 5.0 parts by mass of phenoxyethyl acrylate (product name: Biscoat # 192 manufactured by Osaka Organic Chemical Co., Ltd.), ethylene oxide-modified phosphoric acid diphosphate 1.0 part by weight of methacrylate (product name KAYAMER PM-21, manufactured by Nippon Kayaku Co., Ltd.), 1.0 part by weight of titanocene compound (product name: IRGACURE 784, manufactured by Ciba Japan Co., Ltd.), 38.0 parts by weight (product name) NK-64 manufactured by Fuji Talc Co., Ltd. was kneaded with a mixer in a dark room to obtain a putty-like product (photocurable resin (9)).

製造例１０
ビスフェノールＡ型エポキシアクリレート樹脂２５．０質量部（ＭｉｗｏｎＣｏｍｅｒｃｉａｌＣｏ.Ｌｔｄ製品名ＭｉｒａｍｅｒＰＥ２１０）、フェノキシエチルアクリレート２０．０質量部（大阪有機化学株式会社製品名ビスコート＃１９２）、エチレンオキサイド変性リン酸ジメタクリレート質量１．０部（日本化薬株式会社製品名ＫＡＹＡＭＥＲＰＭ−２１）、チタノセン化合物１．０質量部（チバ・ジャパン株式会社製製品名ＩＲＧＡＣＵＲＥ７８４）、充填剤５３．０質量部（製品名ＮＫ−６４富士タルク株式会社製）を、暗室内で、ミキサーで混錬して、パテ状物（光硬化性樹脂（１０））を得た。 Production Example 10
25.0 parts by mass of bisphenol A type epoxy acrylate resin (product name: Miramer PE210 manufactured by Miwon Commercial Co. Ltd), 20.0 parts by mass of phenoxyethyl acrylate (product name: Biscoat # 192 manufactured by Osaka Organic Chemical Co., Ltd.), ethylene oxide-modified diphosphate Methacrylate mass 1.0 part (Nippon Kayaku Co., Ltd. product name KAYAMER PM-21), titanocene compound 1.0 part by mass (Ciba Japan Co., Ltd. product name IRGACURE 784), filler 53.0 parts by mass (product name) NK-64 manufactured by Fuji Talc Co., Ltd. was kneaded with a mixer in a dark room to obtain a putty-like product (photocurable resin (10)).

製造例１１
ビスフェノールＡ型エポキシアクリレート樹脂３０．０質量部（ＭｉｗｏｎＣｏｍｅｒｃｉａｌＣｏ.Ｌｔｄ製品名ＭｉｒａｍｅｒＰＥ２１０）、フェノキシエチルアクリレート７．０質量部（大阪有機化学株式会社製品名ビスコート＃１９２）、エチレンオキサイド変性リン酸ジメタクリレート１．０質量部（日本化薬株式会社製品名ＫＡＹＡＭＥＲＰＭ−２１）、チタノセン化合物１．０質量部（チバ・ジャパン株式会社製製品名ＩＲＧＡＣＵＲＥ７８４）、充填剤６１．０質量部（製品名ＮＫ−６４富士タルク株式会社製）を、暗室内で、ミキサーで混錬して、パテ状物（光硬化性樹脂（１１））を得た。 Production Example 11
30.0 parts by mass of bisphenol A type epoxy acrylate resin (product name: Miramer PE210 manufactured by Miwon Commercial Co. Ltd), 7.0 parts by mass of phenoxyethyl acrylate (product name: Biscoat # 192 manufactured by Osaka Organic Chemical Co., Ltd.), ethylene oxide modified diphosphate 1.0 part by weight of methacrylate (product name KAYAMER PM-21, manufactured by Nippon Kayaku Co., Ltd.), 1.0 part by weight of titanocene compound (product name: IRGACURE 784, manufactured by Ciba Japan Co., Ltd.), 61.0 parts by weight (product name) NK-64 manufactured by Fuji Talc Co., Ltd. was kneaded with a mixer in a dark room to obtain a putty-like product (photocurable resin (11)).

次に、前記光硬化性樹脂（１）〜（１１）を夫々使用して、実施例１〜５、比較例１〜１１の性能試験を、以下に示すように行った。 Next, using the photocurable resins (1) to (11), performance tests of Examples 1 to 5 and Comparative Examples 1 to 11 were performed as shown below.

〔実施例１〕
ガス配管３のガス漏れ箇所４の被覆部に、光硬化性樹脂（１）を使用した。ガス漏れ修理作業は、以下のように行った。硬質塩化ビニル被覆鋼管（口径２５Ａ商標ＰＬＶメーカーＪＦＥ継手株式会社製）の管外壁に孔５を開け、ガス漏れ箇所４を形成した。ガスを低圧（２．５ｋＰa）で通流させ、ガス検知器およびガス漏れ検知用発泡液でガス漏れを確認した。その管外壁のガス漏れ箇所４に、ガス漏れ修理を行った。
つまり、予め透明樹脂フィルム１としてポリエチレンフィルムの一方の面に光硬化性樹脂組成物２を塗布して未硬化樹脂層付着部を形成しておいて、その未硬化樹脂層付着部をガス配管３における管外壁のガス漏れ箇所４に貼着させて被覆部を形成し、しっかり巻きつけて手で押し付けて密着させるべく空気を追い出し遮断した。その後、ポリエチレンフィルムを通過してガスが漏れていないことを、ガス検知器およびガス漏れ検知用発泡液で確認した。この状態で、外部より、白色光を発光するＬＥＤライト６（波長５５０ｎｍ強度１５０ルーメンス）を、光の当たっている部位に３分程度あて、順次、照射位置を移動させ、各部に対して、３分照射し、全周に照射させた。照射させた後、無着色透明ポリエチレンフィルムを剥がした。光硬化性樹脂（１）の硬化物は、完全にタックフリーとなって、硬化していた。その後、ガス検知器（可燃性ガス検知器ＸＰ―７０２IIＺ−Ｂ検知感度１０ｐｐｍ）で検知したが、ガス漏れはなかった。
また、同時に、ガス検知用発泡液で確認したが、ガス漏れはなかった。また、防食試験として、この施工したガス配管３そのものを、塩水噴霧試験２４０時間を行なった。本材料の塗り付けたものは、全く剥がれておらず、且つ、その部分から発錆もなく、保護性能は高く、良好であった。 [Example 1]
A photocurable resin (1) was used for the covering portion of the gas leaking portion 4 of the gas pipe 3. The gas leak repair work was performed as follows. Hole 5 was made in the pipe outer wall of a hard vinyl chloride coated steel pipe (caliber 25A, trade mark, PLV manufacturer, JFE Fittings Co., Ltd.) to form a gas leak point 4. Gas was allowed to flow at a low pressure (2.5 kPa), and gas leakage was confirmed with a gas detector and a gas leakage detection foaming liquid. Gas leak repair was performed at the gas leak point 4 on the outer wall of the pipe.
That is, the photocurable resin composition 2 is previously applied to one surface of a polyethylene film as the transparent resin film 1 to form an uncured resin layer adhesion portion, and the uncured resin layer adhesion portion is connected to the gas pipe 3. A coating portion was formed by adhering to the gas leaking portion 4 on the outer wall of the tube, and the air was driven out and shut off so as to be tightly wound and pressed by hand. Thereafter, it was confirmed with a gas detector and a gas leakage detection foaming solution that gas did not leak through the polyethylene film. In this state, the LED light 6 that emits white light (wavelength 550 nm, intensity 150 lumens) is applied from the outside to the illuminated area for about 3 minutes, the irradiation position is sequentially moved, and each part has 3 The whole circumference was irradiated. After irradiation, the uncolored transparent polyethylene film was peeled off. The cured product of the photocurable resin (1) was completely tack-free and cured. Then, although it detected with the gas detector (Flammable gas detector XP-702IIZ-B detection sensitivity 10ppm), there was no gas leak.
At the same time, it was confirmed with a gas detection foaming liquid, but there was no gas leakage. In addition, as a corrosion prevention test, the constructed gas pipe 3 itself was subjected to a salt spray test 240 hours. The material coated with this material was not peeled off at all, and there was no rusting from the portion, and the protection performance was high and good.

〔実施例２〕
ガス配管３のガス漏れ箇所４の被覆部に、光硬化性樹脂（２）を使用した。ガス漏れ修理作業は、以下のように行った。硬質塩化ビニル被覆鋼管（口径２５Ａ商標ＰＬＶメーカーＪＦＥ継手株式会社製）の管外壁に孔５を開け、ガス漏れ箇所４を形成した。ガスを低圧（２．５ｋＰa）で通流させ、ガス検知器およびガス漏れ検知用発泡液でガス漏れを確認した。その管外壁のガス漏洩箇所に、ガス漏れ修理を行った。
つまり、予め透明樹脂フィルム１としてポリエチレンフィルムの一方の面に光硬化性樹脂組成物２を塗布して未硬化樹脂層付着部を形成しておいて、その未硬化樹脂層付着部をガス配管３における管外壁のガス漏れ箇所４に貼着させて被覆部を形成し、しっかり巻きつけて手で押し付けて密着させるべく空気を追い出し遮断した。その後、ポリエチレンフィルムを通過してガスが漏れていないことを、ガス検知器およびガス漏れ検知用発泡液で確認した。この状態で、外部より、白色光を発光するＬＥＤライト６（波長５５０ｎｍ強度１８０ルーメンス）を、光の当たっている部位に３分程度あて、順次、照射位置を移動させ、各部に対して、３分照射し、全周に照射させた。照射させた後、無着色透明ポリエチレンフィルムを剥がした。光硬化性樹脂（２）の硬化物は、完全にタックフリーとなって、硬化していた。その後、ガス検知器（可燃性ガス検知器ＸＰ―７０２IIＺ−Ｂ検知感度１０ｐｐｍ）で検知したが、ガス漏れはなかった。
また、同時に、ガス検知用発泡液で確認したが、ガス漏れはなかった。また、防食試験としていつも、この施工したガス配管３そのものを、塩水噴霧試験２４０時間を行なった。本材料の塗り付けたものは、全く剥がれておらず、且つ、その部分から発錆もなく、保護性能は高く、良好であった。 [Example 2]
A photocurable resin (2) was used for the covering portion of the gas leakage part 4 of the gas pipe 3. The gas leak repair work was performed as follows. Hole 5 was made in the pipe outer wall of a hard vinyl chloride coated steel pipe (caliber 25A, trade mark, PLV manufacturer, JFE Fittings Co., Ltd.) to form a gas leak point 4. Gas was allowed to flow at a low pressure (2.5 kPa), and gas leakage was confirmed with a gas detector and a gas leakage detection foaming liquid. A gas leak repair was performed at the gas leak location on the outer wall of the pipe.
That is, the photocurable resin composition 2 is previously applied to one surface of a polyethylene film as the transparent resin film 1 to form an uncured resin layer adhesion portion, and the uncured resin layer adhesion portion is connected to the gas pipe 3. A coating portion was formed by adhering to the gas leaking portion 4 on the outer wall of the tube, and the air was driven out and shut off so as to be tightly wound and pressed by hand. Thereafter, it was confirmed with a gas detector and a gas leakage detection foaming solution that gas did not leak through the polyethylene film. In this state, the LED light 6 that emits white light (wavelength 550 nm, intensity 180 lumens) is externally applied to the lighted portion for about 3 minutes, and the irradiation position is sequentially moved to The whole circumference was irradiated. After irradiation, the uncolored transparent polyethylene film was peeled off. The cured product of the photocurable resin (2) was completely tack-free and cured. Then, although it detected with the gas detector (Flammable gas detector XP-702IIZ-B detection sensitivity 10ppm), there was no gas leak.
At the same time, it was confirmed with a gas detection foaming liquid, but there was no gas leakage. Further, as a corrosion prevention test, the constructed gas pipe 3 itself was subjected to a salt spray test for 240 hours. The material coated with this material was not peeled off at all, and there was no rusting from the portion, and the protection performance was high and good.

〔実施例３〕
ガス配管３のガス漏れ箇所４の被覆部に、光硬化性樹脂（３）を使用した。ガス漏れ修理作業は、以下のように行った。硬質塩化ビニル被覆鋼管（口径２５Ａ商標ＰＬＶメーカーＪＦＥ継手株式会社製）の管外壁に孔５を開け、ガス漏れ箇所４を形成した。ガスを低圧（２．５ｋＰa）で通流させ、ガス検知器およびガス漏れ検知用発泡液でガス漏れを確認した。その管外壁のガス漏れ箇所４に、ガス漏れ修理を行った。
つまり、予め透明樹脂フィルム１としてポリエチレンフィルムの一方の面に光硬化性樹脂組成物２を塗布して未硬化樹脂層付着部を形成しておいて、その未硬化樹脂層付着部をガス配管３における管外壁のガス漏れ箇所４に貼着させて被覆部を形成し、しっかり巻きつけて手で押し付けて密着させるべく空気を追い出し遮断した。その後、ポリエチレンフィルムを通過してガスが漏れていないことを、ガス検知器およびガス漏れ検知用発泡液で確認した。この状態で、外部より、白色光を発光するＬＥＤライト６（波長５５０ｎｍ強度１８０ルーメンス）を、光の当たっている部位に３分程度あて、順次、照射位置を移動させ、各部に対して、３分照射し、全周に照射させた。照射させた後、無着色透明ポリエチレンフィルムを剥がした。光硬化性樹脂（３）の硬化物は、完全にタックフリーとなって、硬化していた。その後、ガス検知器（可燃性ガス検知器ＸＰ―７０２IIＺ−Ｂ検知感度１０ｐｐｍ）で検知したが、ガス漏れはなかった。
また、同時に、ガス検知用発泡液で確認したが、ガス漏れはなかった。また、防食試験として、この施工したガス配管３そのものを、塩水噴霧試験２４０時間を行なった。本材料の塗り付けたものは、全く剥がれておらず、且つ、その部分から発錆もなく、保護性能は高く、良好であった。
実施例２に比較して、光増感剤であるチオキサントン化合物およびアミン化合物を併用することにより、硬化性が改善され、より早く硬化し、ガス漏れを止めることができた。 Example 3
A photocurable resin (3) was used for the covering portion of the gas leaking portion 4 of the gas pipe 3. The gas leak repair work was performed as follows. Hole 5 was made in the pipe outer wall of a hard vinyl chloride coated steel pipe (caliber 25A, trade mark, PLV manufacturer, JFE Fittings Co., Ltd.) to form a gas leak point 4. Gas was allowed to flow at a low pressure (2.5 kPa), and gas leakage was confirmed with a gas detector and a gas leakage detection foaming liquid. Gas leak repair was performed at the gas leak point 4 on the outer wall of the pipe.
That is, the photocurable resin composition 2 is previously applied to one surface of a polyethylene film as the transparent resin film 1 to form an uncured resin layer adhesion portion, and the uncured resin layer adhesion portion is connected to the gas pipe 3. A coating portion was formed by adhering to the gas leaking portion 4 on the outer wall of the tube, and the air was driven out and shut off so as to be tightly wound and pressed by hand. Thereafter, it was confirmed with a gas detector and a gas leakage detection foaming solution that gas did not leak through the polyethylene film. In this state, the LED light 6 that emits white light (wavelength 550 nm, intensity 180 lumens) is externally applied to the lighted portion for about 3 minutes, and the irradiation position is sequentially moved to The whole circumference was irradiated. After irradiation, the uncolored transparent polyethylene film was peeled off. The cured product of the photocurable resin (3) was completely tack-free and cured. Then, although it detected with the gas detector (Flammable gas detector XP-702IIZ-B detection sensitivity 10ppm), there was no gas leak.
At the same time, it was confirmed with a gas detection foaming liquid, but there was no gas leakage. In addition, as a corrosion prevention test, the constructed gas pipe 3 itself was subjected to a salt spray test 240 hours. The material coated with this material was not peeled off at all, and there was no rusting from the portion, and the protection performance was high and good.
Compared to Example 2, by using a thioxanthone compound and an amine compound that are photosensitizers in combination, the curability was improved, the composition was cured more quickly, and gas leakage could be stopped.

〔実施例４〕
ガス配管３のガス漏れ箇所４の被覆部に、光硬化性樹脂（４）を使用した。ガス漏れ修理作業は、以下のように行った。硬質塩化ビニル被覆鋼管（口径２５Ａ商標ＰＬＶメーカーＪＦＥ継手株式会社製））の管外壁に孔５を開け、ガス漏れ箇所４を形成した。ガスを低圧（２．５ｋＰa）で通流させ、ガス検知器およびガス漏れ検知用発泡液でガス漏れを確認した。その管外壁のガス漏れ箇所４に、ガス漏れ修理を行った。
つまり、予め透明樹脂フィルム１としてポリエチレンフィルムの一方の面に光硬化性樹脂組成物２を塗布して未硬化樹脂層付着部を形成しておいて、その未硬化樹脂層付着部をガス配管３における管外壁のガス漏れ箇所４に貼着させて被覆部を形成し、しっかり巻きつけて手で押し付けて密着させるべく空気を追い出し遮断した。その後、ポリエチレンフィルムを通過してガスが漏れていないことを、ガス検知器およびガス漏れ検知用発泡液で確認した。この状態で、外部より、白色光を発光するＬＥＤライト（波長５５０ｎｍ強度１８０ルーメンス）を、光の当たっている部位に３分程度あて、順次、照射位置を移動させ、各部に対して、３分照射し、全周に照射させた。照射させた後、無着色透明ポリエチレンフィルムを剥がした。光硬化性樹脂（４）の硬化物は、完全にタックフリーとなって、硬化していた。その後、ガス検知器（可燃性ガス検知器ＸＰ―７０２IIＺ−Ｂ検知感度１０ｐｐｍ）で検知したが、ガス漏れはなかった。
また、同時に、ガス検知用発泡液で確認したが、ガス漏れはなかった。また、防食試験としていつも、この施工したガス配管３そのものを、塩水噴霧試験２４０時間を行なった。本材料の塗り付けたものは、全く剥がれておらず、且つ、その部分から発錆もなく、保護性能は高く、良好であった。
実施例２に比較して、光増感剤であるチオキサントン化合物およびアミン化合物を併用することにより、硬化性が改善され、より早く硬化し、ガス漏れを止めることができた。 Example 4
A photocurable resin (4) was used for the covering portion of the gas leakage part 4 of the gas pipe 3. The gas leak repair work was performed as follows. Hole 5 was made in the pipe outer wall of a hard vinyl chloride coated steel pipe (caliber 25A, trade mark, PLV manufacturer, JFE Fittings Co., Ltd.) to form a gas leak point 4. Gas was allowed to flow at a low pressure (2.5 kPa), and gas leakage was confirmed with a gas detector and a gas leakage detection foaming liquid. Gas leak repair was performed at the gas leak point 4 on the outer wall of the pipe.
That is, the photocurable resin composition 2 is previously applied to one surface of a polyethylene film as the transparent resin film 1 to form an uncured resin layer adhesion portion, and the uncured resin layer adhesion portion is connected to the gas pipe 3. A coating portion was formed by adhering to the gas leaking portion 4 on the outer wall of the tube, and the air was driven out and shut off so as to be tightly wound and pressed by hand. Thereafter, it was confirmed with a gas detector and a gas leakage detection foaming solution that gas did not leak through the polyethylene film. In this state, an LED light that emits white light (wavelength: 550 nm, intensity: 180 lumens) is externally applied to the lighted area for about 3 minutes, and the irradiation position is sequentially moved to each part for 3 minutes. Irradiated and irradiated all around. After irradiation, the uncolored transparent polyethylene film was peeled off. The cured product of the photocurable resin (4) was completely tack-free and cured. Then, although it detected with the gas detector (Flammable gas detector XP-702IIZ-B detection sensitivity 10ppm), there was no gas leak.
At the same time, it was confirmed with a gas detection foaming liquid, but there was no gas leakage. Further, as a corrosion prevention test, the constructed gas pipe 3 itself was subjected to a salt spray test for 240 hours. The material coated with this material was not peeled off at all, and there was no rusting from the portion, and the protection performance was high and good.
Compared to Example 2, by using a thioxanthone compound and an amine compound that are photosensitizers in combination, the curability was improved, the composition was cured more quickly, and gas leakage could be stopped.

〔実施例５〕
ガス配管３のガス漏れ箇所４の被覆部に、光硬化性樹脂（５）を使用した。ガス漏れ修理作業は、以下のように行った。硬質塩化ビニル被覆鋼管（口径２５Ａ商標ＰＬＶメーカーＪＦＥ継手株式会社製）の管外壁に孔５を開け、ガス漏れ箇所４を形成した。ガスを低圧（２．５ｋＰa）で通流させ、ガス検知器およびガス漏れ検知用発泡液でガス漏れを確認した。その管外壁のガス漏洩箇所に、ガス漏れ修理を行った。
つまり、予め透明樹脂フィルム１としてポリエチレンフィルムの一方の面に光硬化性樹脂組成物２を塗布して未硬化樹脂層付着部を形成しておいて、その未硬化樹脂層付着部をガス配管３における管外壁のガス漏れ箇所４に貼着させて被覆部を形成し、しっかり巻きつけて手で押し付けて密着させるべく空気を追い出し遮断した。その後、ポリエチレンフィルムを通過してガスが漏れていないことを、ガス検知器およびガス漏れ検知用発泡液で確認した。この状態で、外部より、白色光を発光するＬＥＤライト６（波長５５０ｎｍ、強度１８０ルーメンス）を、光の当たっている部位に３分程度あて、順次、照射位置を移動させ、各部に対して、３分照射し、全周に照射させた。照射させた後、無着色透明ポリエチレンフィルムを剥がした。光硬化性樹脂（５）の硬化物は、完全にタックフリーとなって、硬化していた。その後、ガス検知器（可燃性ガス検知器ＸＰ―７０２IIＺ−Ｂ検知感度１０ｐｐｍ）で検知したが、ガス漏れはなかった。
また、同時に、ガス検知用発泡液で確認したが、ガス漏れはなかった。また、防食試験としていつも、この施工したガス配管３そのものを、塩水噴霧試験２４０時間を行なった。本材料の塗り付けたものは、全く剥がれておらず、且つ、その部分から発錆もなく、保護性能は高く、良好であった。 Example 5
A photocurable resin (5) was used for the covering portion of the gas leakage part 4 of the gas pipe 3. The gas leak repair work was performed as follows. Hole 5 was made in the pipe outer wall of a hard vinyl chloride coated steel pipe (caliber 25A, trade mark, PLV manufacturer, JFE Fittings Co., Ltd.) to form a gas leak point 4. Gas was allowed to flow at a low pressure (2.5 kPa), and gas leakage was confirmed with a gas detector and a gas leakage detection foaming liquid. A gas leak repair was performed at the gas leak location on the outer wall of the pipe.
That is, the photocurable resin composition 2 is previously applied to one surface of a polyethylene film as the transparent resin film 1 to form an uncured resin layer adhesion portion, and the uncured resin layer adhesion portion is connected to the gas pipe 3. A coating portion was formed by adhering to the gas leaking portion 4 on the outer wall of the tube, and the air was driven out and shut off so as to be tightly wound and pressed by hand. Thereafter, it was confirmed with a gas detector and a gas leakage detection foaming solution that gas did not leak through the polyethylene film. In this state, the LED light 6 (wavelength 550 nm, intensity 180 lumens) that emits white light from the outside is applied to the lighted portion for about 3 minutes, and the irradiation position is sequentially moved to each part. Irradiated for 3 minutes and irradiated all around. After irradiation, the uncolored transparent polyethylene film was peeled off. The cured product of the photocurable resin (5) was completely tack-free and cured. Then, although it detected with the gas detector (Flammable gas detector XP-702IIZ-B detection sensitivity 10ppm), there was no gas leak.
At the same time, it was confirmed with a gas detection foaming liquid, but there was no gas leakage. Further, as a corrosion prevention test, the constructed gas pipe 3 itself was subjected to a salt spray test for 240 hours. The material coated with this material was not peeled off at all, and there was no rusting from the portion, and the protection performance was high and good.

〔比較例１〕
ガス配管３のガス漏れ箇所４の被覆部に、光硬化性樹脂（６）を使用した。ガス漏れ修理作業は、以下のように行った。硬質塩化ビニル被覆鋼管（口径２５Ａ商標ＰＬＶメーカーＪＦＥ継手株式会社製）の管外壁に孔５を開け、ガス漏れ箇所４を形成した。ガスを低圧（２．５ｋＰa）で通流させ、ガス検知器およびガス漏れ検知用発泡液でガス漏れを確認した。その管外壁のガス漏洩箇所に、ガス漏れ修理を行った。
つまり、予め透明樹脂フィルム１としてポリエチレンフィルムの一方の面に光硬化性樹脂組成物２を塗布して未硬化樹脂層付着部を形成しておいて、その未硬化樹脂層付着部をガス配管３における管外壁のガス漏れ箇所４に貼着させて被覆部を形成し、しっかり巻きつけて手で押し付けて密着させるべく空気を追い出し遮断した。その後、ポリエチレンフィルムを通過してガスが漏れていないことを、ガス検知器およびガス漏れ検知用発泡液で確認した。この状態で、外部より、白色光を発光するＬＥＤライト６（波長５５０ｎｍ、強度１８０ルーメンス）を、光の当たっている部位に３分程度あて、順次、照射位置を移動させ、各部に対して、３分照射し、全周に照射させた。照射させた後、無着色透明ポリエチレンフィルムを剥がした。光硬化性樹脂（６）の硬化物は、完全にタックフリーとはならず表面がベタついて、半硬化状態であった。また、ガス漏れは、完全には止まらなかった。 [Comparative Example 1]
A photocurable resin (6) was used for the covering portion of the gas leaking portion 4 of the gas pipe 3. The gas leak repair work was performed as follows. Hole 5 was made in the pipe outer wall of a hard vinyl chloride coated steel pipe (caliber 25A, trade mark, PLV manufacturer, JFE Fittings Co., Ltd.) to form a gas leak point 4. Gas was allowed to flow at a low pressure (2.5 kPa), and gas leakage was confirmed with a gas detector and a gas leakage detection foaming liquid. A gas leak repair was performed at the gas leak location on the outer wall of the pipe.
That is, the photocurable resin composition 2 is previously applied to one surface of a polyethylene film as the transparent resin film 1 to form an uncured resin layer adhesion portion, and the uncured resin layer adhesion portion is connected to the gas pipe 3. A coating portion was formed by adhering to the gas leaking portion 4 on the outer wall of the tube, and the air was driven out and shut off so as to be tightly wound and pressed by hand. Thereafter, it was confirmed with a gas detector and a gas leakage detection foaming solution that gas did not leak through the polyethylene film. In this state, the LED light 6 (wavelength 550 nm, intensity 180 lumens) that emits white light from the outside is applied to the lighted area for about 3 minutes, and the irradiation position is sequentially moved to each part. Irradiated for 3 minutes and irradiated all around. After irradiation, the uncolored transparent polyethylene film was peeled off. The cured product of the photo-curable resin (6) was not completely tack-free but had a sticky surface and was in a semi-cured state. Moreover, the gas leak did not stop completely.

〔比較例２〕
ガス配管３のガス漏れ箇所４の被覆部に、光硬化性樹脂（１）を使用した。ガス漏れ修理作業は、以下のように行った。硬質塩化ビニル被覆鋼管（口径２５Ａ商標ＰＬＶメーカーＪＦＥ継手株式会社製）の管外壁に孔５を開け、ガス漏れ箇所４を形成した。ガスを低圧（２．５ｋＰa）で通流させ、ガス検知器およびガス漏れ検知用発泡液でガス漏れを確認した。その管外壁のガス漏れ箇所４に、ガス漏れ修理を行った。
つまり、予め透明樹脂フィルム１としてポリエチレンフィルムの一方の面に光硬化性樹脂組成物２を塗布して未硬化樹脂層付着部を形成しておいて、その未硬化樹脂層付着部をガス配管３における管外壁のガス漏れ箇所４に貼着させて被覆部を形成し、しっかり巻きつけて手で押し付けて密着させるべく空気を追い出し遮断した。その後、ポリエチレンフィルムを通過してガスが漏れていないことを、ガス検知器およびガス漏れ検知用発泡液で確認した。この状態で、屋内でのガス漏れを予定して、直射日光の当たらないようにして、1時間放置した。光硬化性樹脂（１）は、全く硬化せず、ガス漏れを止めることはできなかった。 [Comparative Example 2]
A photocurable resin (1) was used for the covering portion of the gas leaking portion 4 of the gas pipe 3. The gas leak repair work was performed as follows. Hole 5 was made in the pipe outer wall of a hard vinyl chloride coated steel pipe (caliber 25A, trade mark, PLV manufacturer, JFE Fittings Co., Ltd.) to form a gas leak point 4. Gas was allowed to flow at a low pressure (2.5 kPa), and gas leakage was confirmed with a gas detector and a gas leakage detection foaming liquid. Gas leak repair was performed at the gas leak point 4 on the outer wall of the pipe.
That is, the photocurable resin composition 2 is previously applied to one surface of a polyethylene film as the transparent resin film 1 to form an uncured resin layer adhesion portion, and the uncured resin layer adhesion portion is connected to the gas pipe 3. A coating portion was formed by adhering to the gas leaking portion 4 on the outer wall of the tube, and the air was driven out and shut off so as to be tightly wound and pressed by hand. Thereafter, it was confirmed with a gas detector and a gas leakage detection foaming solution that gas did not leak through the polyethylene film. In this state, an indoor gas leak was scheduled and left for 1 hour without direct sunlight. The photocurable resin (1) was not cured at all, and gas leakage could not be stopped.

〔比較例３〕
ガス配管３のガス漏れ箇所４の被覆部に、光硬化性樹脂（１）を使用した。ガス漏れ修理作業は、以下のように行った。硬質塩化ビニル被覆鋼管（口径２５Ａ商標ＰＬＶメーカーＪＦＥ継手株式会社製）の管外壁に孔５を開け、ガス漏れ箇所４に形成した。ガスを低圧（２．５ｋＰa）で通流させ、ガス検知器およびガス漏れ検知用発泡液でガス漏れを確認した。その管外壁のガス漏れ箇所４に、ガス漏れ修理を行った。
屋内で、ガス漏れ修理作業としては、硬質塩化ビニル被覆鋼管の露出した管壁部のガス漏れ箇所４に、光硬化性樹脂組成物２を、管壁部全体に塗りつけた。その後、透明無着色ポリエチレンフィルムで覆わずに、この状態で、外部より、白色光を発光するＬＥＤライト（波長５５０ｎｍ強度１８０ルーメンス）を、光の当たっている部位に３分程度あて、順次、照射位置を移動させ、各部に対して、３分照射し、全周に照射させた。光硬化性樹脂（１）の硬化物は、タックフリーとならず、表面が未硬化でべたつきが残った。その後、ガス検知器（可燃性ガス検知器ＸＰ―７０２IIＺ−Ｂ検知感度１０ｐｐｍ）で検知したが、ガス検知器で感応し、ガス漏れを止めることはできなかった。 [Comparative Example 3]
A photocurable resin (1) was used for the covering portion of the gas leaking portion 4 of the gas pipe 3. The gas leak repair work was performed as follows. Holes 5 were made in the pipe outer wall of a hard vinyl chloride coated steel pipe (caliber 25A, trade mark, PLV manufacturer, JFE Fittings Co., Ltd.), and formed in a gas leak location 4. Gas was allowed to flow at a low pressure (2.5 kPa), and gas leakage was confirmed with a gas detector and a gas leakage detection foaming liquid. Gas leak repair was performed at the gas leak point 4 on the outer wall of the pipe.
As a gas leak repair work indoors, the photocurable resin composition 2 was applied to the entire pipe wall portion at the gas leak portion 4 of the exposed pipe wall portion of the hard vinyl chloride coated steel pipe. After that, without covering with a transparent uncolored polyethylene film, in this state, an LED light (wavelength 550 nm, intensity 180 lumens) emitting white light is applied from the outside to the illuminated area for about 3 minutes and sequentially irradiated. The position was moved, each part was irradiated for 3 minutes, and the entire circumference was irradiated. The cured product of the photocurable resin (1) was not tack-free, and the surface was uncured and remained sticky. After that, it was detected by a gas detector (flammable gas detector XP-702IIZ-B detection sensitivity 10 ppm), but it was detected by the gas detector and gas leakage could not be stopped.

〔比較例４〕
ガス配管３のガス漏れ箇所４の被覆部に、光硬化性樹脂（１）を使用した。ガス漏れ修理作業は、以下のように行った。硬質塩化ビニル被覆鋼管（口径２５Ａ商標ＰＬＶメーカーＪＦＥ継手株式会社製）の管外壁に孔５を開け、ガス漏れ箇所４を形成した。ガスを低圧（２．５ｋＰa）で通流させ、ガス検知器およびガス漏れ検知用発泡液でガス漏れを確認した。その管外壁のガス漏れ箇所４に、ガス漏れ修理を行った。
つまり、予め透明樹脂フィルム１としてポリエチレンフィルムの一方の面に光硬化性樹脂組成物２を塗布して未硬化樹脂層付着部を形成しておいて、その未硬化樹脂層付着部をガス配管３における管外壁のガス漏れ箇所４に貼着させて被覆部を形成し、しっかり巻きつけて手で押し付けて密着させるべく空気を追い出し遮断した。その後、ポリエチレンフィルムを通過してガスが漏れていないことを、ガス検知器およびガス漏れ検知用発泡液で確認した。この状態で、外部より、３６５ｎｍを発光するブラックライトを使用したライト（パナソニック株式会社型番ＢＦ−６４４）で、光の当たっている部位に３分程度あて、順次、照射位置を移動させ、各部に対して、３分照射し、全周に照射させた。照射させた後、無着色透明ポリエチレンフィルムを剥がした。光硬化性樹脂（１）の硬化物は、硬化不良であった。表面に、べたつきがあった。その後、ガス検知器（可燃性ガス検知器ＸＰ―７０２IIＺ−Ｂ検知感度１０ｐｐｍ）に感応し、ガス漏れを止められなかった。 [Comparative Example 4]
A photocurable resin (1) was used for the covering portion of the gas leaking portion 4 of the gas pipe 3. The gas leak repair work was performed as follows. Hole 5 was made in the pipe outer wall of a hard vinyl chloride coated steel pipe (caliber 25A, trade mark, PLV manufacturer, JFE Fittings Co., Ltd.) to form a gas leak point 4. Gas was allowed to flow at a low pressure (2.5 kPa), and gas leakage was confirmed with a gas detector and a gas leakage detection foaming liquid. Gas leak repair was performed at the gas leak point 4 on the outer wall of the pipe.
That is, the photocurable resin composition 2 is previously applied to one surface of a polyethylene film as the transparent resin film 1 to form an uncured resin layer adhesion portion, and the uncured resin layer adhesion portion is connected to the gas pipe 3. A coating portion was formed by adhering to the gas leaking portion 4 on the outer wall of the tube, and the air was driven out and shut off so as to be tightly wound and pressed by hand. Thereafter, it was confirmed with a gas detector and a gas leakage detection foaming solution that gas did not leak through the polyethylene film. In this state, with a light (Panasonic Corporation Model No. BF-644) using a black light that emits 365 nm from outside, the irradiation position is sequentially moved to the part that is exposed to light and moved to each part. On the other hand, it was irradiated for 3 minutes and irradiated all around. After irradiation, the uncolored transparent polyethylene film was peeled off. The cured product of the photocurable resin (1) was poorly cured. There was stickiness on the surface. After that, it was sensitive to a gas detector (flammable gas detector XP-702IIZ-B detection sensitivity 10 ppm), and gas leakage could not be stopped.

〔比較例５〕
ガス配管３のガス漏れ箇所４の被覆部に、光硬化性樹脂（１）を使用した。ガス漏れ修理作業は、以下のように行った。硬質塩化ビニル被覆鋼管（口径２５Ａ商標ＰＬＶメーカーＪＦＥ継手株式会社製）の管外壁に孔５を開け、ガス漏れ箇所４を形成した。ガスを低圧（２．５ｋＰa）で通流させ、ガス検知器およびガス漏れ検知用発泡液でガス漏れを確認した。その管外壁のガス漏れ箇所４に、ガス漏れ修理を行った。
つまり、予め透明樹脂フィルム１としてポリエチレンフィルムの一方の面に光硬化性樹脂組成物２を塗布して未硬化樹脂層付着部を形成しておいて、その未硬化樹脂層付着部をガス配管３における管外壁のガス漏れ箇所４に貼着させて被覆部を形成し、しっかり巻きつけて手で押し付けて空気を追い出し遮断した。その後、ポリエチレンフィルムを通過してガスが漏れていないことを、ガス検知器およびガス漏れ検知用発泡液で確認した。この状態で、外部より、７００nmを発光する砲弾型ＬＥＤを１０個使用したライトで、光の当たっている部位に３分程度あて、順次、照射位置を移動させ、各部に対して、３分照射し、全周に照射させた。照射させた後、無着色透明ポリエチレンフィルムを剥がした。光硬化性樹脂（１）の硬化物は、硬化不良であった。表面に、べたつきがあった。その後、ガス検知器（可燃性ガス検知器ＸＰ―７０２IIＺ−Ｂ検知感度１０ｐｐｍ）に感応し、ガス漏れを止められなかった。 [Comparative Example 5]
A photocurable resin (1) was used for the covering portion of the gas leaking portion 4 of the gas pipe 3. The gas leak repair work was performed as follows. Hole 5 was made in the pipe outer wall of a hard vinyl chloride coated steel pipe (caliber 25A, trade mark, PLV manufacturer, JFE Fittings Co., Ltd.) to form a gas leak point 4. Gas was allowed to flow at a low pressure (2.5 kPa), and gas leakage was confirmed with a gas detector and a gas leakage detection foaming liquid. Gas leak repair was performed at the gas leak point 4 on the outer wall of the pipe.
That is, the photocurable resin composition 2 is previously applied to one surface of a polyethylene film as the transparent resin film 1 to form an uncured resin layer adhesion portion, and the uncured resin layer adhesion portion is connected to the gas pipe 3. A coating portion was formed by adhering to the gas leaking portion 4 on the outer wall of the tube, and it was wound tightly and pressed by hand to block out air. Thereafter, it was confirmed with a gas detector and a gas leakage detection foaming solution that gas did not leak through the polyethylene film. In this state, from the outside, a light using 10 bullet-type LEDs emitting 700nm light is applied to the illuminated area for about 3 minutes, the irradiation position is moved sequentially, and each part is irradiated for 3 minutes. Then, the entire circumference was irradiated. After irradiation, the uncolored transparent polyethylene film was peeled off. The cured product of the photocurable resin (1) was poorly cured. There was stickiness on the surface. After that, it was sensitive to a gas detector (flammable gas detector XP-702IIZ-B detection sensitivity 10 ppm), and gas leakage could not be stopped.

〔比較例６〕
ガス配管３のガス漏れ箇所４の被覆部に、光硬化性樹脂（７）を使用した。ガス漏れ修理作業は、以下のように行った。硬質塩化ビニル被覆鋼管（口径２５Ａ商標ＰＬＶメーカーＪＦＥ継手株式会社製）の管外壁に孔５を開け、ガス漏れ箇所４を形成した。ガスを低圧（２．５ｋＰa）で通流させ、ガス検知器およびガス漏れ検知用発泡液でガス漏れを確認した。その管外壁のガス漏れ箇所４に、ガス漏れ修理を行った。
つまり、予め透明樹脂フィルム１としてポリエチレンフィルムの一方の面に光硬化性樹脂組成物２を塗布して未硬化樹脂層付着部を形成しておいて、その未硬化樹脂層付着部をガス配管３における管外壁のガス漏れ箇所４に貼着させて被覆部を形成し、しっかり巻きつけて手で押し付けて密着させるべく空気を追い出し遮断した。その後、ポリエチレンフィルムを通過してガスが漏れていないことを、ガス検知器およびガス漏れ検知用発泡液で確認した。この状態で、外部より、白色光を発光するＬＥＤライト（波長５５０ｎｍ強度１８０ルーメンス）を、光の当たっている部位に３分程度あて、順次、照射位置を移動させ、各部に対して、３分照射し、全周に照射させた。照射させた後、無着色透明ポリエチレンフィルムを剥がした。硬化性が悪く、未硬化であった。その後、ガス検知器（可燃性ガス検知器ＸＰ―７０２IIＺ−Ｂ検知感度１０ｐｐｍ）で検知したが、ガス検知器は感応した。ガス漏れを止めることはできなかった。 [Comparative Example 6]
A photocurable resin (7) was used for the covering portion of the gas leaking portion 4 of the gas pipe 3. The gas leak repair work was performed as follows. Hole 5 was made in the pipe outer wall of a hard vinyl chloride coated steel pipe (caliber 25A, trade mark, PLV manufacturer, JFE Fittings Co., Ltd.) to form a gas leak point 4. Gas was allowed to flow at a low pressure (2.5 kPa), and gas leakage was confirmed with a gas detector and a gas leakage detection foaming liquid. Gas leak repair was performed at the gas leak point 4 on the outer wall of the pipe.
That is, the photocurable resin composition 2 is previously applied to one surface of a polyethylene film as the transparent resin film 1 to form an uncured resin layer adhesion portion, and the uncured resin layer adhesion portion is connected to the gas pipe 3. A coating portion was formed by adhering to the gas leaking portion 4 on the outer wall of the tube, and the air was driven out and shut off so as to be tightly wound and pressed by hand. Thereafter, it was confirmed with a gas detector and a gas leakage detection foaming solution that gas did not leak through the polyethylene film. In this state, an LED light that emits white light (wavelength: 550 nm, intensity: 180 lumens) is externally applied to the lighted area for about 3 minutes, and the irradiation position is sequentially moved to each part for 3 minutes. Irradiated and irradiated all around. After irradiation, the uncolored transparent polyethylene film was peeled off. The curability was poor and uncured. Then, it detected with the gas detector (flammable gas detector XP-702IIZ-B detection sensitivity 10ppm), but the gas detector was sensitive. The gas leak could not be stopped.

〔比較例７〕
ガス配管３のガス漏れ箇所４の被覆部に、光硬化性樹脂（８）を使用した。ガス漏れ修理作業は、以下のように行った。硬質塩化ビニル被覆鋼管（口径２５Ａ商標ＰＬＶメーカーＪＦＥ継手株式会社製）の管外壁に孔５を開け、ガス漏れ箇所４を形成した。ガスを低圧（２．５ｋＰa）で通流させ、ガス検知器およびガス漏れ検知用発泡液でガス漏れを確認した。その管外壁のガス漏れ箇所４に、ガス漏れ修理を行った。
つまり、予め透明樹脂フィルム１としてポリエチレンフィルムの一方の面に光硬化性樹脂組成物２を塗布して未硬化樹脂層付着部を形成しておいて、その未硬化樹脂層付着部をガス配管３における管外壁のガス漏れ箇所４に貼着させて被覆部を形成し、しっかり巻きつけて手で押し付けて密着させるべく空気を追い出し遮断した。その後、ポリエチレンフィルムを通過してガスが漏れていないことを、ガス検知器およびガス漏れ検知用発泡液で確認した。この状態で、外部より、白色光を発光するＬＥＤライト（波長５５０ｎｍ強度１８０ルーメンス）を、光の当たっている部位に３分程度あて、順次、照射位置を移動させ、各部に対して、３分照射し、全周に照射させた。照射させた後、無着色透明ポリエチレンフィルムを剥がした。硬化性は良好であったが、少しの光で硬化するために、ガス配管３に貼り付ける過程で、硬化が始まり、きれいに塗付できなく、作業性が悪かったと同時に、光硬化性樹脂（８）は、安定性も悪く、使用できない。 [Comparative Example 7]
A photocurable resin (8) was used for the covering portion of the gas leaking portion 4 of the gas pipe 3. The gas leak repair work was performed as follows. Hole 5 was made in the pipe outer wall of a hard vinyl chloride coated steel pipe (caliber 25A, trade mark, PLV manufacturer, JFE Fittings Co., Ltd.) to form a gas leak point 4. Gas was allowed to flow at a low pressure (2.5 kPa), and gas leakage was confirmed with a gas detector and a gas leakage detection foaming liquid. Gas leak repair was performed at the gas leak point 4 on the outer wall of the pipe.
That is, the photocurable resin composition 2 is previously applied to one surface of a polyethylene film as the transparent resin film 1 to form an uncured resin layer adhesion portion, and the uncured resin layer adhesion portion is connected to the gas pipe 3. A coating portion was formed by adhering to the gas leaking portion 4 on the outer wall of the tube, and the air was driven out and shut off so as to be tightly wound and pressed by hand. Thereafter, it was confirmed with a gas detector and a gas leakage detection foaming solution that gas did not leak through the polyethylene film. In this state, an LED light that emits white light (wavelength: 550 nm, intensity: 180 lumens) is externally applied to the lighted area for about 3 minutes, and the irradiation position is sequentially moved to each part for 3 minutes. Irradiated and irradiated all around. After irradiation, the uncolored transparent polyethylene film was peeled off. Although the curability was good, since it hardened with a little light, curing started in the process of being attached to the gas pipe 3, and it could not be applied neatly, and the workability was poor. ) Is not stable and cannot be used.

〔比較例８〕
ガス配管３のガス漏れ箇所４の被覆部に、光硬化性樹脂（９）を使用した。パテの混錬があまりに粘度が高くて、不可能であった。作業効率が極めて悪く、適さなかった。 [Comparative Example 8]
A photocurable resin (9) was used for the covering portion of the gas leakage part 4 of the gas pipe 3. The kneading of putty was too viscous and impossible. The work efficiency was very poor and was not suitable.

〔比較例９〕
ガス配管３のガス漏れ箇所４の被覆部に、光硬化性樹脂（１０）を使用した。パテの混錬があまりに粘度が高くて、不可能であった。作業効率が極めて悪く、適さなかった。 [Comparative Example 9]
A photocurable resin (10) was used for the covering portion of the gas leaking portion 4 of the gas pipe 3. The kneading of putty was too viscous and impossible. The work efficiency was very poor and was not suitable.

〔比較例１０〕
ガス配管３のガス漏れ箇所４の被覆部に、光硬化性樹脂（１１）を使用した。パテの混錬があまりに粘度が高くて、不可能であった。作業効率が極めて悪く、適さなかった。 [Comparative Example 10]
A photocurable resin (11) was used for the covering portion of the gas leaking portion 4 of the gas pipe 3. The kneading of putty was too viscous and impossible. The work efficiency was very poor and was not suitable.

〔比較例１１〕
ガス配管３のガス漏れ箇所４の被覆部に、光硬化性樹脂（１）を使用した。ガス漏れ修理作業は、以下のように行った。硬質塩化ビニル被覆鋼管（口径２５Ａ商標ＰＬＶメーカーＪＦＥ継手株式会社製）の管外壁に孔５を開け、ガス漏れ箇所４を形成した。ガスを低圧（２．５ｋＰa）で通流させ、ガス検知器およびガス漏れ検知用発泡液でガス漏れを確認した。その管外壁のガス漏れ箇所４に、ガス漏れ修理を行った。
つまり、予め透明樹脂フィルム１としてポリエチレンフィルムの一方の面に光硬化性樹脂組成物２を塗布して未硬化樹脂層付着部を形成しておいて、その未硬化樹脂層付着部をガス配管３における管外壁のガス漏れ箇所４に貼着させて被覆部を形成し、しっかり巻きつけて手で押し付けて密着させるべく空気を追い出し遮断した。その後、ポリエチレンフィルムを通過してガスが漏れていないことを、ガス検知器およびガス漏れ検知用発泡液で確認した。この状態で、外部より、白色光を発光するＬＥＤライト６（波長５５０ｎｍ強度１２０ルーメンス）を、光の当たっている部位に３分程度あて、順次、照射位置を移動させ、各部に対して、３分照射し、全周に照射させた。照射させた後、無着色透明ポリエチレンフィルムを剥がした。光硬化性樹脂（１）の硬化物は、完全に硬化せずに、ベタ付きがあった。
また、同時に、ガス検知用発泡液で確認したが、ガス漏れはなかったが、ガス漏れ修理作業には、適していなかった。 [Comparative Example 11]
A photocurable resin (1) was used for the covering portion of the gas leaking portion 4 of the gas pipe 3. The gas leak repair work was performed as follows. Hole 5 was made in the pipe outer wall of a hard vinyl chloride coated steel pipe (caliber 25A, trade mark, PLV manufacturer, JFE Fittings Co., Ltd.) to form a gas leak point 4. Gas was allowed to flow at a low pressure (2.5 kPa), and gas leakage was confirmed with a gas detector and a gas leakage detection foaming liquid. Gas leak repair was performed at the gas leak point 4 on the outer wall of the pipe.
That is, the photocurable resin composition 2 is previously applied to one surface of a polyethylene film as the transparent resin film 1 to form an uncured resin layer adhesion portion, and the uncured resin layer adhesion portion is connected to the gas pipe 3. A coating portion was formed by adhering to the gas leaking portion 4 on the outer wall of the tube, and the air was driven out and shut off so as to be tightly wound and pressed by hand. Thereafter, it was confirmed with a gas detector and a gas leakage detection foaming solution that gas did not leak through the polyethylene film. In this state, the LED light 6 that emits white light (wavelength 550 nm, intensity 120 lumens) is externally applied to the illuminated area for about 3 minutes, and the irradiation position is sequentially moved to 3 parts for each part. The whole circumference was irradiated. After irradiation, the uncolored transparent polyethylene film was peeled off. The cured product of the photocurable resin (1) was not completely cured and had a stickiness.
At the same time, although it was confirmed with a gas detection foaming liquid, there was no gas leakage, but it was not suitable for repairing gas leakage.

尚、本発明のガス漏れ箇所の修理方法は、ガス配管のみならず、ガス管のネジ部やメカニカル継手のメカニカル部からの老朽化等によるガス漏れが発生する箇所にも、採用できるガス漏れ箇所修理方法である。 In addition, the repair method of the gas leak location of this invention is not only a gas piping but the gas leak location which can be adopted also in the location where the gas leak by the aging etc. from the screw part of a gas pipe or the mechanical part of a mechanical joint occurs. It is a repair method.

１透明樹脂フィルム
２光硬化性樹脂組成物
３ガス配管
４ガス漏れ箇所 DESCRIPTION OF SYMBOLS 1 Transparent resin film 2 Photocurable resin composition 3 Gas piping 4 Gas leak location

Claims

(A) 30 to 40 parts by mass of a bisphenol A type epoxy acrylate, (B) 1.0 to 2.0 parts by mass of a titanocene compound, and (C) filling on one surface of a transparent resin film made of an uncolored transparent polyethylene film in advance. An uncured resin layer adhering part is formed by applying a photocurable resin composition in which 37 to 48 parts by mass of a material is mixed ,
While adhering the uncured resin layer adhering portion to a gas leak location on the outer wall of the pipe in the gas pipe to form a covering portion, while maintaining the airtightness by pressing the transparent resin film from the outside to the outer tube wall side After the photocurable resin composition is cured and reacted by irradiating light through the transparent resin film to the covering portion, the transparent resin film is peeled off to form a seal portion for a gas leak location on the outer wall of the tube How to repair gas leaks in gas piping.

Having a light source of the wavelength of light is 400 to 650 nm, a gas leak location method for repairing gas pipe according to claim 1, irradiating the coated portion in a luminaire having a higher photometric 150 lumens.

It is a gas leak location repair member used for the gas leak location repair method of the gas piping of Claim 1 or 2 , Comprising: On one surface of the transparent resin film which consists of a non-colored transparent polyethylene film , in an uncured state ( A) A photocurable resin composition obtained by mixing 30 to 40 parts by mass of a bisphenol A type epoxy acrylate, (B) 1.0 to 2.0 parts by mass of a titanocene compound, and (C) 37 to 48 parts by mass of a filler is applied. Gas leak repair parts for existing gas piping.