JP2005048113A - Urethane washing liquid composition - Google Patents

Urethane washing liquid composition Download PDF

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JP2005048113A
JP2005048113A JP2003283363A JP2003283363A JP2005048113A JP 2005048113 A JP2005048113 A JP 2005048113A JP 2003283363 A JP2003283363 A JP 2003283363A JP 2003283363 A JP2003283363 A JP 2003283363A JP 2005048113 A JP2005048113 A JP 2005048113A
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urethane
cleaning
liquid composition
acetate
aliphatic hydrocarbon
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JP4278042B2 (en
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Tomomi Okada
知巳 岡田
Keita Matsushita
景太 松下
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Eneos Corp
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Japan Energy Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a urethane washing liquid having high detergency, from an environmental problem and toxic problems, not emitting naphthalene odor and aromatic peculiar odor, having good working environment thereby and capable of extremely readily carrying out drying after washing. <P>SOLUTION: The urethane washing liquid composition comprises 22-40 wt.% monohydric alcohol or acetate or 17-40 wt.% monohydric alcohol or acetate and 50-83 wt. saturated aliphatic hydrocarbon, particularly 9-12C saturated aliphatic hydrocarbon. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、ウレタン樹脂及びウレタン樹脂が硬化する途中の原料体などが付着した注型器、容器等の硬質物質を洗浄する際に用いるウレタン洗浄液組成物に関する。   The present invention relates to a urethane cleaning liquid composition for use in cleaning hard materials such as casters and containers to which a urethane resin and a raw material in the course of curing of the urethane resin adhere.

ウレタン樹脂は、トリレンジイソシアナート等のジイソシアナートと、ポリエチレンオキシド、ポリプロピレンオキシドあるいはポリエチレングルコール等のジオールとを混合(以下、これらの化合物及びこの重合物を含めて「ウレタン」と総称する)し、ウレタン注入機で、ポリウレタン成形部へ注入し、発泡、重合させ、成形されている。この注入機においては、所定量の注入が済むと注入機に残存するウレタンを洗浄、除去し、再度ウレタンの注入を行うという操作が繰り返されている。   The urethane resin is a mixture of a diisocyanate such as tolylene diisocyanate and a diol such as polyethylene oxide, polypropylene oxide or polyethylene glycol (hereinafter collectively referred to as “urethane” including these compounds and this polymer). Then, it is injected into a polyurethane molding part by a urethane injection machine, foamed, polymerized and molded. In this injector, after a predetermined amount of injection is completed, the operation of washing and removing urethane remaining in the injector and injecting urethane again is repeated.

従来、この種の洗浄剤としては、フロン系溶剤、あるいはトリクロロエタン等の塩素系溶剤が使用されていた。しかし、フロン系溶剤はオゾン層を破壊する物質として、1995年末にその製造が禁止され、更に塩素系溶剤は毒性が強く、水質汚染を防止するため、その法規制も厳しい。しかし、特にウレタン樹脂の被膜の剥離に十分な洗浄力が要求される場合、毒性の強い塩化メチレンを使用せざるを得なかった。   Conventionally, as this type of cleaning agent, a chlorofluorocarbon solvent or a chlorinated solvent such as trichloroethane has been used. However, the production of chlorofluorocarbon solvents is prohibited as a substance that destroys the ozone layer at the end of 1995. Furthermore, chlorinated solvents are highly toxic and prevent water pollution, so the regulations are strict. However, particularly when a sufficient detergency is required to remove the urethane resin coating, it has been necessary to use highly toxic methylene chloride.

本出願人は、塩化メチレンに代わる洗浄剤として、アルキルナフタレン等の高沸点芳香族溶剤(特許文献1及び3)や炭素数6〜18の芳香族化合物にN-メチル-2-ピロリドンを含有させたもの(特許文献2)等を提案した。   The present applicant has incorporated N-methyl-2-pyrrolidone into a high-boiling aromatic solvent such as alkylnaphthalene (Patent Documents 1 and 3) or an aromatic compound having 6 to 18 carbon atoms as a cleaning agent in place of methylene chloride. (Patent document 2) etc. were proposed.

しかし、かかる高沸点の芳香族溶剤は、ナフタレン臭や芳香族特有の臭気を有し、作業環境上好ましくなく、また沸点が高いために、乾燥に時間がかかるという問題点を有していた。   However, such a high boiling point aromatic solvent has naphthalene odor and aromatic odor, is unfavorable in the working environment, and has a problem that it takes time to dry because of its high boiling point.

特許第3423474号公報Japanese Patent No. 3423474 特開2000−303100号公報JP 2000-303100 A 特開2001−3091号公報JP 2001-3091 A

本発明者は上記課題を解決するために鋭意研究を進めた結果、驚くべきことに、高沸点芳香族溶剤を用いなくても、所定の炭素数の飽和脂肪族炭化水素と一価アルコール或いは酢酸エステルを組み合わせて用いることにより、ウレタンを洗浄できるとともに、ウレタン樹脂の被膜も膨潤させて機器から剥離できることを見出した。   As a result of diligent research to solve the above problems, the present inventor surprisingly found that a saturated aliphatic hydrocarbon having a predetermined number of carbon atoms and a monohydric alcohol or acetic acid can be used without using a high-boiling aromatic solvent. It has been found that by using a combination of esters, urethane can be washed and the urethane resin film can also be swollen and peeled off from the device.

本発明はかかる知見に基づきなされたもので、本発明の目的は、洗浄力が高く、環境問題や毒性の問題もなく、しかもナフタレン臭や芳香族特有の臭気を有しないため作業環境上良好で、さらに洗浄後の乾燥が極めて容易なウレタン洗浄剤を提供することにある。   The present invention has been made on the basis of such knowledge, and the object of the present invention is high in detergency, is free from environmental problems and toxicity problems, and does not have naphthalene odor or aromatic odor. Another object of the present invention is to provide a urethane detergent that is extremely easy to dry after washing.

本発明のウレタン洗浄液組成物は、一価アルコール又は酢酸エステルを22〜40重量%、若しくは一価アルコール及び酢酸エステルを17〜40重量%、及び飽和脂肪族炭化水素を50〜83重量%含有することからなるもので、好ましくは、前記飽和脂肪族炭化水素が炭素数9〜12を有するもので、さらには、前記一価アルコールが炭素数5〜10を有するもので、またさらには、前記酢酸エステルが分子内にエーテル結合を有し、且つ炭素数5〜10を有するものであることからなる。   The urethane cleaning liquid composition of the present invention contains 22 to 40% by weight of monohydric alcohol or acetate, or 17 to 40% by weight of monohydric alcohol and acetate, and 50 to 83% by weight of saturated aliphatic hydrocarbon. Preferably, the saturated aliphatic hydrocarbon has 9 to 12 carbon atoms, the monohydric alcohol has 5 to 10 carbon atoms, and further, the acetic acid The ester has an ether bond in the molecule and has 5 to 10 carbon atoms.

本発明のウレタン洗浄剤組成物は、ウレタン樹脂又はその原料体の付着した硬質物質の被洗浄物に対して良好な洗浄効果を有すると共に、優れた安全性を有し、かつ毒性が少なく、臭気もなく、しかも洗浄後の乾燥が容易であるという格別の効果を奏するものである。   The urethane detergent composition of the present invention has a good cleaning effect on an object to be cleaned of a hard substance to which a urethane resin or its raw material adheres, has excellent safety, has low toxicity, and has an odor. In addition, there is an extraordinary effect that drying after washing is easy.

本発明のウレタン洗浄液組成物において、一価アルコール又は酢酸エステルをそれぞれ単独で用いる場合は、これらの化合物は、洗浄剤全体の22〜40重量%を、好ましくは22〜35重量%を占めるように含有させる。一方、一価アルコール及び酢酸エステルを併用する場合は、その合計量が、洗浄剤全体の17〜40重量%を、好ましくは17〜35重量%を占めるように含有させる。これらの範囲の下限外では洗浄性が不十分であり、範囲の上限を超えて、これらの化合物を配合しても、その配合量の増加に比して、洗浄効果の顕著な効果は認められず、これらの化合物が高価格であるため経済的ではない。   In the urethane cleaning liquid composition of the present invention, when each monohydric alcohol or acetate is used alone, these compounds occupy 22 to 40% by weight, preferably 22 to 35% by weight of the total cleaning agent. Contain. On the other hand, when using together monohydric alcohol and acetate ester, the total amount is made to contain 17 to 40 weight% of the whole washing | cleaning agent, Preferably it is made to occupy 17 to 35 weight%. Outside the lower limit of these ranges, the detergency is insufficient, and even if these compounds are blended beyond the upper limit of the range, a remarkable effect of the cleaning effect is recognized as compared to the increase in the blending amount. In addition, these compounds are not economical because of their high price.

上述の一価アルコールとしては、脂肪族炭化水素の水素の一つをヒドロキシル基で置換した化合物や、ジアルキルエーテルの水素の一つをヒドロキシル基で置換した化合物が好ましく用いられる。一価アルコールは、炭素数5〜10、特には6〜8を有するものが好ましい。   As the monohydric alcohol, a compound in which one of aliphatic hydrocarbon hydrogens is substituted with a hydroxyl group or a compound in which one of dialkyl ether hydrogens is substituted with a hydroxyl group is preferably used. Monohydric alcohols having 5 to 10 carbon atoms, particularly 6 to 8 carbon atoms are preferred.

上記脂肪族炭化水素の水素の一つをヒドロキシル基で置換した化合物としては、直鎖および分岐鎖の炭素数5〜10、特には6〜8のアルコールが好ましく用いられる。脂肪族炭化水素の水素の一つをヒドロキシル基で置換した化合物としては、2−エチルヘキシルアルコール、n−オクタノールが好ましく用いられる。   As the compound in which one of the aliphatic hydrocarbon hydrogens is substituted with a hydroxyl group, linear and branched alcohols having 5 to 10 carbon atoms, particularly 6 to 8 carbon atoms are preferably used. As a compound in which one of aliphatic hydrocarbon hydrogens is substituted with a hydroxyl group, 2-ethylhexyl alcohol and n-octanol are preferably used.

上記ジアルキルエーテルの水素の一つをヒドロキシル基で置換した化合物としては、エチレングリコールモノプロピルエーテル、エチレングリコールモノブチルエーテル、プロピレングリコールモノエチルエーテル、プロピレングリコールモノプロピルエーテル、プロピレングリコールモノブチルエーテル、ブチレングリコールモノメチルエーテル、ブチレングリコールモノエチルエーテルが挙げられる。入手の容易性、引火点の高さからプロピレングリコールモノメチルエーテルの一種である3−メチル−3−メトキシブチルアルコールが好ましく用いられる。   The compounds in which one of the hydrogens of the dialkyl ether is substituted with a hydroxyl group include ethylene glycol monopropyl ether, ethylene glycol monobutyl ether, propylene glycol monoethyl ether, propylene glycol monopropyl ether, propylene glycol monobutyl ether, butylene glycol monomethyl ether And butylene glycol monoethyl ether. 3-Methyl-3-methoxybutyl alcohol which is a kind of propylene glycol monomethyl ether is preferably used because of its availability and high flash point.

一方、酢酸エステルとしては、ヒドロキシル基を有する脂肪族炭化水素誘導体と酢酸とのエステル、特には、ジアルキルエーテルの水素元素の一つをヒドロキシル基で置換したアルコールと酢酸とのエステルが好ましく用いられる。酢酸エステルは炭素数5〜10、特には6〜8を有するものが好ましい。   On the other hand, as the acetate ester, an ester of an aliphatic hydrocarbon derivative having a hydroxyl group and acetic acid, particularly an ester of alcohol and acetic acid obtained by substituting one of the hydrogen elements of a dialkyl ether with a hydroxyl group is preferably used. Acetic acid esters having 5 to 10 carbon atoms, particularly 6 to 8 carbon atoms are preferred.

この酢酸エステルの具体的な化合物としては、エチレングリコールモノエチルエーテルアセテート、エチレングリコールモノプロピルエーテルアセテート、エチレングリコールモノブチルエーテルアセテート、プロピレングリコールモノメチルエーテルアセテート、プロピレングリコールモノエチルエーテルアセテート、プロピレングリコールモノプロピルエーテルアセテート、プロピレングリコールジアセテート、ブチレングリコールモノエチルエーテルアセテート、ブチレングリコールモノプロピルエーテルアセテート、ブチレングリコールモノメチルエーテルアセテート、ジエチレングリコールモノエチルエーテルアセテート、ジエチレングリコールモノプロピルエーテルアセテート、ジエチレングリコールモノメチルエーテルアセテート、ジプロピレングリコールモノエチルエーテルアセテート、ジプロピレングリコールモノメチルエーテルアセテート、トリエチレングリコールモノエチルエーテルアセテート、トリエチレングリコールモノメチルエーテルアセテートが好適である。特には、入手の容易性、引火点の高さから、プロピレングリコールモノメチルエーテルアセテートの一種である3-メチル-3-メトキシブチルアセテートが好ましい。   Specific compounds of this acetate include ethylene glycol monoethyl ether acetate, ethylene glycol monopropyl ether acetate, ethylene glycol monobutyl ether acetate, propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, propylene glycol monopropyl ether acetate , Propylene glycol diacetate, butylene glycol monoethyl ether acetate, butylene glycol monopropyl ether acetate, butylene glycol monomethyl ether acetate, diethylene glycol monoethyl ether acetate, diethylene glycol monopropyl ether acetate, diethylene glycol monomethyl ether acetate DOO, dipropylene glycol monoethyl ether acetate, dipropylene glycol monomethyl ether acetate, triethylene glycol monoethyl ether acetate, triethylene glycol monomethyl ether acetate are preferred. In particular, 3-methyl-3-methoxybutyl acetate, which is a kind of propylene glycol monomethyl ether acetate, is preferred from the viewpoint of availability and high flash point.

本発明では、上記の一価アルコール又は酢酸エステルを飽和脂肪族炭化水素化合物に配合したものであるが、この飽和脂肪族炭化水素化合物は、洗浄剤全体の50〜83重量%、好ましくは、60〜83重量%含有させる。この飽和脂肪族炭化水素化合物は、直鎖、分岐鎖、脂環族、及びこれらの混合物を用いることができ、特には、直鎖飽和脂肪族炭化水素が好ましい。飽和脂肪族炭化水素は炭素数9〜12、特には炭素数10および/または11が、特には、ノルマルデカンまたはノルマルウンデカンが好適である。脂肪族炭化水素の具体例としては、直鎖および分岐鎖のノナン、デカン、ウンデカン、ドデカンなどが挙げられる。   In the present invention, the above-mentioned monohydric alcohol or acetate ester is blended with a saturated aliphatic hydrocarbon compound. This saturated aliphatic hydrocarbon compound is 50 to 83% by weight, preferably 60% by weight of the total amount of the cleaning agent. ˜83 wt% is contained. As the saturated aliphatic hydrocarbon compound, straight chain, branched chain, alicyclic, and a mixture thereof can be used, and straight chain saturated aliphatic hydrocarbon is particularly preferable. The saturated aliphatic hydrocarbon has 9 to 12 carbon atoms, particularly 10 and / or 11 carbon atoms, and normal decane or normal undecane is particularly preferable. Specific examples of the aliphatic hydrocarbon include linear and branched nonane, decane, undecane, dodecane and the like.

本発明の洗浄液組成物には、本発明の目的を損なわない範囲で、他の炭化水素類、エステル類、アルコール類、ケトン類、ラクタム類などの配合成分や、界面活性剤、酸化防止剤、紫外線吸収剤、防錆剤などの慣用の添加剤を含有させることができる。本発明で特定される3つの成分以外の含有量は、合計で10重量%未満、特には2重量%未満であることが好ましい。また、通常、水は配合しない方が好ましい。   In the cleaning liquid composition of the present invention, other components such as hydrocarbons, esters, alcohols, ketones, lactams, surfactants, antioxidants, and the like, as long as the object of the present invention is not impaired. Conventional additives such as an ultraviolet absorber and a rust preventive agent can be contained. The content other than the three components specified in the present invention is preferably less than 10% by weight, particularly less than 2% by weight. Usually, it is preferable not to add water.

界面活性剤としては非イオン界面活性剤が好ましく、例えば高級アルコールエチレンオキサイド付加物、アルキルフェノールエチレンオキサイド付加物、脂肪酸エチレンオキサイド付加物、高級アルキルアミンエチレンオキサイド付加物、ソルビトールおよびソルビタンの脂肪酸エステル、ショ糖脂肪酸エステル、シリコン系、フッ素系などいずれのものも使用できる。   As the surfactant, a nonionic surfactant is preferable. For example, higher alcohol ethylene oxide adduct, alkylphenol ethylene oxide adduct, fatty acid ethylene oxide adduct, higher alkylamine ethylene oxide adduct, sorbitol and sorbitan fatty acid ester, sucrose Any of fatty acid ester, silicon type, fluorine type and the like can be used.

また、紫外線吸収剤および酸化防止剤は、洗浄液の長期保存などにおける安定性の向上に役立ち、紫外線吸収剤としては例えばベンゾトリアゾール系、ベンゾフェノン系、ヒンダードアミン系などを使用でき、酸化防止剤としては例えばフェノール系、アミン系、硫黄系、リン系など、本発明の洗浄液組成物に溶解するものはいずれも使用できる。フェノール系酸化防止剤を、50〜1000ppm添加することが特に好ましい。   In addition, ultraviolet absorbers and antioxidants are useful for improving stability in long-term storage of cleaning liquids, and examples of ultraviolet absorbers that can be used include benzotriazoles, benzophenones, and hindered amines. Any of those that dissolve in the cleaning liquid composition of the present invention, such as phenol, amine, sulfur, and phosphorus, can be used. It is particularly preferable to add 50 to 1000 ppm of a phenolic antioxidant.

本発明の洗浄方法において、洗浄液組成物と接触させる方法自体は特に制限はなく、公知のいずれの方法も使用できる。例えば、洗浄液組成物を含浸したスポンジ、布等による拭き取り、洗浄液組成物への浸漬及び/又はスプレー等により実施することが好ましい。浸漬による洗浄においては、洗浄効果を高めるために、同時に攪拌、揺動、噴流、又はエアバブリング等を組み合わせることが更に好ましい。この場合、超音波の使用条件は、例えば発振周波数20〜100kHz、発振出力10〜200W/lが好ましい。エアバブリングでは、微細な気泡を、好ましくはガス:液体の体積比1:1〜5:1程度で通気することにより、洗浄液組成物に不溶性の汚れを気泡と共に上昇させ、不溶性の汚れをも分離することができる。スプレーによる洗浄において、その圧力は、例えば0.5〜10kg/cm2 Gが好ましい。いずれの場合も洗浄時間は、好ましくは15秒間〜2時間、特に好ましくは30秒間〜20分間である。上記範囲未満では洗浄が不十分で、付着した汚れを十分に除去し得ず、一方、上記範囲を超えても洗浄効果は格別向上しない。洗浄温度は、好ましくは20〜120℃である。上記洗浄において、より高温で処理することにより洗浄効果を著しく上昇させることができる。上記範囲未満では、洗浄が不十分となり易い。 In the cleaning method of the present invention, the method itself for contacting with the cleaning liquid composition is not particularly limited, and any known method can be used. For example, it is preferable to carry out by wiping with a sponge, cloth or the like impregnated with the cleaning liquid composition, immersion in the cleaning liquid composition and / or spraying. In cleaning by immersion, it is further preferable to combine stirring, rocking, jet flow, air bubbling, or the like at the same time in order to enhance the cleaning effect. In this case, the use conditions of the ultrasonic waves are preferably, for example, an oscillation frequency of 20 to 100 kHz and an oscillation output of 10 to 200 W / l. In air bubbling, fine bubbles are ventilated, preferably in a gas: liquid volume ratio of about 1: 1 to 5: 1, so that insoluble dirt rises with the bubbles and also separates insoluble dirt. can do. In the cleaning by spraying, the pressure is preferably 0.5 to 10 kg / cm 2 G, for example. In any case, the washing time is preferably 15 seconds to 2 hours, particularly preferably 30 seconds to 20 minutes. If the amount is less than the above range, the cleaning is insufficient, and the attached dirt cannot be sufficiently removed. On the other hand, the cleaning effect is not significantly improved even if the range is exceeded. The washing temperature is preferably 20 to 120 ° C. In the above cleaning, the cleaning effect can be remarkably increased by processing at a higher temperature. If it is less than the above range, cleaning tends to be insufficient.

本発明の洗浄液組成物は、硬化前ウレタン樹脂及び硬化前ウレタン樹脂原料組成物を取り扱う産業装置、例えば貯蔵タンク、混合槽、注型機等の洗浄に好ましく使用し得る。   The cleaning liquid composition of the present invention can be preferably used for cleaning industrial equipment such as storage tanks, mixing tanks, and casting machines that handle urethane resins before curing and urethane resin raw material compositions before curing.

本発明の洗浄液組成物は、上記の硬化前樹脂、特に硬化前樹脂原料組成物に対して硬化促進作用がない。また、各樹脂の物性に悪影響を及ぼすこともない。従って、洗浄後に本発明の洗浄液組成物が、例えばタンク内等に多少残存しても、再度上記の各硬化前樹脂、特に硬化前樹脂組成物の貯蔵中に、硬化のおそれがなく、また、硬化工程で早すぎる硬化が起きない。   The cleaning liquid composition of the present invention has no curing accelerating action on the above-mentioned pre-curing resin, in particular, the pre-curing resin raw material composition. Further, the physical properties of each resin are not adversely affected. Therefore, even if the cleaning liquid composition of the present invention remains somewhat in the tank or the like after cleaning, there is no risk of curing during storage of each of the above-mentioned pre-curing resins, particularly the pre-curing resin composition, Premature curing does not occur in the curing process.

ポリウレタン樹脂としては、例えばトリレンジイソシアナート(TDI)、ジフェニルメタンジイソシアナート(MDI)等のジイソシアナート及びポリプロピレングリコール等のポリオール類との反応物が挙げられる。ポリウレタン樹脂組成物としては、上記ポリウレタン樹脂に硬化剤、硬化促進剤を加え、更に乳化剤、発泡剤、安定剤、可塑剤、難燃剤、帯電防止剤、着色剤、褶動性改良剤、耐衝撃性改良剤等の慣用の添加剤を配合したもの等が挙げられる。   Examples of the polyurethane resin include reactants with diisocyanates such as tolylene diisocyanate (TDI) and diphenylmethane diisocyanate (MDI) and polyols such as polypropylene glycol. As the polyurethane resin composition, a curing agent and a curing accelerator are added to the above polyurethane resin, and further, an emulsifier, a foaming agent, a stabilizer, a plasticizer, a flame retardant, an antistatic agent, a colorant, a peristaltic modifier, and an impact resistance. And the like, which contain conventional additives such as property improvers.

以下に、本発明を実施例、比較例により更に詳細に説明するが、本発明はこれら実施例により限定されるものではない。   The present invention will be described in more detail with reference to examples and comparative examples, but the present invention is not limited to these examples.

表1に示す組成の洗浄液を用い、攪拌を組合わせた浸漬による洗浄テストを実施した。ステンレス板(20mm×50mm)に東京エアゾル化学社製スリースーパーウレタンフォームS−20を0.2g付着させ、15秒間室温にてウレタン樹脂を硬化させた後、100mlの洗浄剤組成物が入ったビーカーに保持した。洗浄液は500rpmで攪拌し、次の判定により、洗浄性を評価し、その結果を表1の下欄に示した。
判定:○ウレタンフォームが完全に溶解、×:板にウレタンフォームが残存もしくはウレタンフォームが液中に浮遊し、完全溶解できない。
Using a cleaning solution having the composition shown in Table 1, a cleaning test by dipping combined with stirring was performed. A beaker containing 100 ml of a detergent composition after 0.2 g of 3 super urethane foam S-20 manufactured by Tokyo Aerosol Chemical Co., Ltd. was adhered to a stainless steel plate (20 mm × 50 mm) and the urethane resin was cured at room temperature for 15 seconds. Held on. The cleaning solution was stirred at 500 rpm, and the cleaning property was evaluated by the following judgment. The result is shown in the lower column of Table 1.
Judgment: ○ Urethane foam is completely dissolved, x: Urethane foam remains on the plate or urethane foam floats in the liquid and cannot be completely dissolved.

Figure 2005048113
Figure 2005048113

(比較例1)
表2に示す組成の洗浄液を用い、実施例1と同様の方法により、洗浄性を判定し、評価した。この結果を表2に下欄に示した。
(Comparative Example 1)
Using the cleaning liquid having the composition shown in Table 2, the cleaning performance was determined and evaluated in the same manner as in Example 1. The results are shown in Table 2 in the lower column.

Figure 2005048113
Figure 2005048113

表1の実施例試験No.4の洗浄剤を使用して、ウレタン注型機(TBMジャパン製TB―500)における樹脂混合ノズル部分の洗浄を実施した。ウレタン樹脂としてはUF−820(サンユレジン製)樹脂を試験に供した。   Using the cleaning agent of Example Test No. 4 in Table 1, the resin mixing nozzle part was cleaned in a urethane casting machine (TB-500 manufactured by TBM Japan). As the urethane resin, UF-820 (manufactured by San Yuresin) resin was used for the test.

ウレタン注型機を使用してウレタン樹脂を打ち出した後、ノズル部分にウレタン樹脂が付着している状態で1時間放置し、その後、実施例4記載の洗浄剤で空気圧1kg/cm2で140gの洗浄剤を投入し、ノズルの洗浄を行った。洗浄後、樹脂混合ノズル部分を分解して、洗浄度合いを確認したが、ウレタン樹脂の残存は確認されず、清浄な表面であった。 After the urethane resin is punched out using a urethane casting machine, it is left for 1 hour with the urethane resin adhering to the nozzle portion, and then 140 g of the cleaning agent described in Example 4 at a pneumatic pressure of 1 kg / cm 2 is 140 g. A cleaning agent was added to clean the nozzle. After cleaning, the resin mixing nozzle part was disassembled and the degree of cleaning was confirmed, but the remaining urethane resin was not confirmed and the surface was clean.

表1の実施例試験No.4の洗浄剤を使用して、ウレタン注型機(TBMジャパン製TB―500)における樹脂混合ノズル部分の洗浄を実施した。ウレタン樹脂としてはSU−2153−9を試験に供した。   Using the cleaning agent of Example Test No. 4 in Table 1, the resin mixing nozzle part was cleaned in a urethane casting machine (TB-500 manufactured by TBM Japan). As a urethane resin, SU-2153-9 was used for the test.

ウレタン注型機を使用してウレタン樹脂を打ち出した後、樹脂混合ノズル部分にウレタン樹脂が付着している状態で1時間放置し、その後、実施例4記載の洗浄剤で空気圧1kg/cm2で140gの洗浄剤を投入し、ノズルの洗浄を行った。洗浄後、樹脂混合ノズル部分を分解して、洗浄度合いを確認したが、ウレタン樹脂の残存は確認されず、清浄な表面であった。 After punching out the urethane resin using a urethane casting machine, leave it for 1 hour with the urethane resin adhering to the resin mixing nozzle, and then use the cleaning agent described in Example 4 at an air pressure of 1 kg / cm 2 . 140 g of cleaning agent was added to clean the nozzle. After cleaning, the resin mixing nozzle part was disassembled and the degree of cleaning was confirmed, but the remaining urethane resin was not confirmed and the surface was clean.

(比較例2)
表2の比較例試験No.1の洗浄剤を使用して実施例2と同様の試験を実施した結果、洗浄後のノズルにはウレタン樹脂が付着残存していた。
(Comparative Example 2)
As a result of conducting a test similar to Example 2 using the cleaning agent of Comparative Example Test No. 1 in Table 2, the urethane resin adhered and remained on the nozzle after cleaning.

(比較例3)
表2の比較例試験No.1の洗浄剤を使用して実施例3と同様の試験を実施した結果、洗浄後のノズルにはウレタン樹脂が付着残存していた。
(Comparative Example 3)
As a result of conducting a test similar to Example 3 using the cleaning agent of Comparative Example Test No. 1 in Table 2, the urethane resin adhered and remained on the nozzle after cleaning.

本発明のウレタン洗浄液組成物は、一価アルコール又は酢酸エステルを22〜40重量%、若しくは一価アルコール及び酢酸エステルを17〜40重量%、及び飽和脂肪族炭化水素を50〜83重量%含有するようにしたので、ウレタン樹脂等の硬化性樹脂又はその原料体の付着した硬質物質の被洗浄物に対して良好な洗浄効果を有すると共に、優れた安全性を有し、かつ毒性が少なく、しかも臭気がほとんど無く、さらに洗浄後の乾燥が容易なため、従来の洗浄剤の代替として工業的に極めて有用なものである。   The urethane cleaning liquid composition of the present invention contains 22 to 40% by weight of monohydric alcohol or acetate, or 17 to 40% by weight of monohydric alcohol and acetate, and 50 to 83% by weight of saturated aliphatic hydrocarbon. As a result, it has a good cleaning effect on curable resin such as urethane resin or hard material to which its raw material adheres, and has excellent safety and low toxicity. Since it has almost no odor and is easy to dry after washing, it is extremely useful industrially as an alternative to conventional cleaning agents.

Claims (4)

一価アルコール又は酢酸エステルを22〜40重量%、若しくは一価アルコール及び酢酸エステルを17〜40重量%、及び飽和脂肪族炭化水素を50〜83重量%含有するウレタン洗浄液組成物。   A urethane cleaning liquid composition containing 22 to 40% by weight of a monohydric alcohol or acetate, or 17 to 40% by weight of a monohydric alcohol and acetate, and 50 to 83% by weight of a saturated aliphatic hydrocarbon. 請求項1に記載の飽和脂肪族炭化水素が炭素数9〜12を有するものであることを特徴とするウレタン洗浄液組成物。   The saturated aliphatic hydrocarbon according to claim 1 has 9 to 12 carbon atoms, and a urethane cleaning liquid composition. 請求項1に記載の一価アルコールが炭素数5〜10を有するものであることを特徴とするウレタン洗浄液組成物。   The urethane cleaning liquid composition, wherein the monohydric alcohol according to claim 1 has 5 to 10 carbon atoms. 請求項1に記載の酢酸エステルが分子内にエーテル結合を有し、且つ炭素数5〜10を有するものであることを特徴とするウレタン洗浄液組成物。   The urethane cleaning liquid composition, wherein the acetate according to claim 1 has an ether bond in the molecule and has 5 to 10 carbon atoms.
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