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JP2000506211A - Stabilized alkane bromide solvent - Google Patents

Stabilized alkane bromide solvent

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JP2000506211A
JP2000506211A JP9531832A JP53183297A JP2000506211A JP 2000506211 A JP2000506211 A JP 2000506211A JP 9531832 A JP9531832 A JP 9531832A JP 53183297 A JP53183297 A JP 53183297A JP 2000506211 A JP2000506211 A JP 2000506211A
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weight
solvent
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propyl bromide
nitroalkane
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JP4082734B2 (en
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リドル，ジエイムズ・エム
リー，バーネル
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アルベマール・コーポレーシヨン
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    • 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
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G5/00—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents
    • C23G5/02—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents
    • C23G5/028—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents containing halogenated hydrocarbons
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
    • C11D7/50—Solvents
    • C11D7/5004—Organic solvents
    • C11D7/5013—Organic solvents containing nitrogen
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
    • C11D7/22—Organic compounds
    • C11D7/26—Organic compounds containing oxygen
    • C11D7/267—Heterocyclic compounds
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
    • C11D7/22—Organic compounds
    • C11D7/28—Organic compounds containing halogen
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
    • C11D7/22—Organic compounds
    • C11D7/32—Organic compounds containing nitrogen

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Metallurgy (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Detergent Compositions (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)

Abstract

(57)【要約】 臭化ｎ−プロピルを少なくとも９０重量％含有する溶媒部分とニトロアルカン、１，２−ブチレンオキサイドおよび１，３−ジオキソランを含んでいて１，４−ジオキサンを含まない安定剤系で構成させた安定化溶媒組成物。この溶媒組成物は冷洗浄系および蒸気洗浄系の両方で脱グリース剤および洗浄剤として用いるに有用である。   (57) [Summary] A stable composition comprising a solvent portion containing at least 90% by weight of n-propyl bromide and a stabilizer system containing nitroalkane, 1,2-butylene oxide and 1,3-dioxolane but not 1,4-dioxane. Solvent composition. The solvent composition is useful for use as a degreasing and cleaning agent in both cold and steam cleaning systems.

Description

【発明の詳細な説明】 安定化された臭化アルカン溶媒発明の背景 ： 本発明は、１，４−ジオキサンを含まない安定剤系と臭化アルカン溶媒を基と する新規な高性能溶媒組成物に関する。 脱グリースおよび洗浄産業では、現在、１，１，１−トリクロロエタン（ＴＣ Ｅ）の洗浄用溶媒としての使用が禁止されると言ったことに直面している。この 禁止は１，１，１−トリクロロエタンが比較的高いＯＤＰ（オゾンを枯渇させる 可能性）を有することを基にしている。代替物がいくつか提案されてはいるが、 溶媒機能が高くないこと、コスト、毒性および可燃性が理由でその多くは不合格 であった。１つの代替品である臭化ｎ−プロピルは理想的であるように見える。 これがオゾンを枯渇させる可能性は低くて容認され得る。これが示す溶媒機能は １，１，１−トリクロロエタンのそれに類似しておりかつそれの製造を容認され るコストで比較的高い純度、即ち９９＋重量％の純度で行うことができることが 示された。更に、臭化ｎ−プロピルは毒性試験で有望さを示している。本技術分 野では、それが示す可燃性に関していくらか混乱があるが、最近の試験でそれは 不燃性であると見なすことができることが示された。 臭化ｎ−プロピルは冷洗浄系および蒸気洗浄系の両方で使用可能であることが 実験研究で示されている。驚くべきことに、臭化ｎ−プロピルはそれを低い温度 、即ち５５℃以下の温度で用いる時にはかなり安定であることを確認した。冷洗 浄系の場合、臭化ｎ−プロピルに安定化を受けさせるとしても必要な安定化は僅 かのみであることが試験で示された。 しかしながら、臭化ｎ−プロピルを蒸気洗浄系で用いる場合には安定化が必要で ある。温度をより高くする、即ち６９−７１℃にすると、鋼、アルミニウム、チ タンおよびマグネシウムなどの如き金属の腐食がもたらされる可能性がある。こ の金属が臭化ｎ−プロピルの脱臭化水素化反応の触媒になることでＨＢｒが生じ 、今度はそれが上記金属の腐食で利用され得ると考えている。 上記金属の触媒活性を低くしそして／または生じる全てのハロゲン化水素を失 活させる安定剤が従来技術に豊富に記述されている。この従来技術が最も利用で きる分野は、高い興味が持たれていた分野、即ちクロロヒドロカーボン溶媒に関 する分野である。ブロモヒドロカーボン溶媒の分野で利用できる技術はずっと少 ない。この技術分野で臭化溶媒が魅力的であることが見い出されたのは新しいこ とからようやく今活発に臭化溶媒と安定剤系の最良組み合わせの選択が調査され るようになったところである。このような組み合わせの可能性は無数であるが、 特別な臭化溶媒と特別な安定剤系の間の理想的な適合を見付け出した人には利益 が与えられるであろう。今日の健康および環境に関する懸念から、現在では、古 い従来技術の溶媒系に含まれる成分の必ずしも全部が容認され得る候補品である とは見なされない。例えば、昔から使用されている非常に一般的な安定剤成分で ある１，４−ジオキサンは、健康の懸念から、現在では好ましいものではない。 従って、本発明の目的は、使用者および環境の両方に優しくて高い効果を示す 脱グリース用および洗浄用溶媒を提供することにある。本発明 ： 本発明は安定化を受けさせた（ｓｔａｂｉｌｉｚｅｄ）脱グリース用 および洗浄用溶媒組成物に関し、これに、臭化ｎ−プロピルを少なくとも９０重 量％含む溶媒部分を含有させ、かつニトロアルカン、１，２−ブチレンオキサイ ドおよび１，３−ジオキソラン組成物を含んでいて１，４−ジオキサンを含まな い安定剤系を含有させる。特に明記しない限り、本明細書で用いる重量％および ｐｐｍ値は本溶媒組成物の全重量を基にした値である。 上記臭化ｎ−プロピルを好適には９９＋重量％の臭化ｎ−プロピルとして上記 組成物に供給し、それの最も一般的な不純物は臭化イソプロピルである。このパ ラグラフに示す重量％およびｐｐｍは臭化ｎ−プロピルと不純物の全重量を基準 にしている。商業的に適切な臭化ｎ−プロピルは臭化イソプロピルを６重量％の 如き多い量で伴う可能性がある。ずっと純度が低い臭化ｎ−プロピルも容認され 得るが、望ましくはない。この不純物である臭化イソプロピルは原生成物である 臭化ｎ−プロピル中に自然と存在するが、その存在量を蒸留で少なくすることが できる。これは臭化ｎ−プロピルよりもずっと低い安定性を示すことから良性の 不純物ではなく、従ってそれが存在していると結果として攻撃的な腐食が起こり 得る。典型的な臭化ｎ−プロピル原生成物には臭化ｎ−プロピルが９６重量％と 臭化イソプロピルが４重量％含まれている。蒸気による脱グリースおよび洗浄の 場合、好適には、臭化イソプロピル含有量を低く保つ、即ち０．０１から０．５ 重量％の範囲内に保つようにする。臭化ｎ−プロピルはＡｌｂｅｍａｒｌｅ Ｃ ｏｒｐｏｒａｔｉｏｎ（Ｒｉｃｈｍｏｎｄ Ｖｉｒｇｉｎｉａ）から商業的に購 入可能である。 前述したように、本溶媒系に１，４−ジオキサンを含めない、即ちこれが本溶 媒組成物を構成する量を不純物量のみ、即ち５００ｐｐｍ未満 にする。少しの１，４−ジオキサンも本溶媒組成物に存在させないのが好適であ る。 本溶媒系に含めるニトロアルカン成分は好適にはニトロメタン、ニトロエタン またはそれらの混合物である。ニトロメタンが最も好適である。このニトロアル カンの使用量は一般に０．０４５から１．０重量％の範囲内である。好適な量は ０．２５から１．０重量％の範囲、最も好適には０．３から０．６重量％の範囲 内である。 １，２−ブチレンオキサイド成分を一般に０．０４５から１．０重量％の範囲 内の量で存在させ、好適には０．２５重量％から１．０重量％、最も好適には０ ．３から０．６重量％の範囲内の量で存在させる。 １，３−ジオキソラン成分の適切な量は０．１から１０．０重量％の範囲内の 量である。好適な量は２．０から６．０重量％の範囲内である。 他の溶媒または溶媒系および添加剤を存在させてそれらと協力させて本発明の 溶媒組成物を用いることは本発明の範囲内である。例えば、本発明の溶媒組成物 をヘキサンまたは臭化ｎ−ブチルなどの如き溶媒と混合することも可能である。 典型的な添加剤は防錆添加剤である。本発明の溶媒組成物が構成する量は本発明 の溶媒組成物と上記他の溶媒または溶媒系または添加剤の全体重量の５０重量％ 以下から９０重量％を越える量であってもよい。 本発明の溶媒組成物に含有させる臭化ｎ−プロピルの量は、前述したように、 定量的に少なくとも９０重量％であり、その残りに不純物、例えば臭化イソプロ ピルなど、本発明の安定剤系、および実施者が望む他の任意添加剤が含まれる。 使用する臭化ｎ−プロピルが特に高純度ではない典型的な溶媒組成物は臭化ｎ− プロピルを９０−９２重量％および 臭化イソプロピルを４−６重量％含有し、それにニトロメタンを０．２５−１． ０重量％、１，２−ブチレンオキサイドを０．２５−１．０重量％および１，３ −ジオキソランを２．０−６．０重量％含有させる。臭化ｎ−プロピルが高純度 の場合には、臭化ｎ−プロピルが本溶媒組成物の９４−９７重量％になるように してもよい。 本発明の溶媒組成物は冷洗浄用途および蒸気洗浄作業で用いるに適切である。 前者は、一般に、洗浄すべき物品を通常は室温から５５℃の範囲内の温度の本溶 媒組成物に浸漬することを特徴とする。蒸気洗浄は洗浄すべき物品を本溶媒組成 物の蒸気の中に通すことを特徴とし、ここでは、上記物品の温度をそれの表面に 蒸気が凝縮するような温度にする。この凝縮物はそれの洗浄機能を果した後に落 下する。この蒸気の温度は一般に本溶媒組成物の沸点に近い温度であり、このイ ンスタントケース（ｉｎｓｔａｎｔ ｃａｓｅ）における温度は、使用する溶媒 組成物の特別な定量的および定性的同定に応じて約６５から７５℃である。臭化 ｎ−プロピル含有量が非常に高い、即ち９５重量％以上の溶媒組成物の場合の沸 点は約６９−７２℃であろう。 以下に本発明の溶媒組成物が有する効果的性質を説明する。本実施例は本明細 書に記述する発明の範囲を限定するとして決して解釈されるべきでないことを意 図する。 実施例 以下に示す材料を一緒に混合することによって溶媒組成物を調製した： 臭化ｎ−プロピルを９６．５重量％ １，３−ジオキソランを２．５重量％ １，２−ブチレンオキサイドを０．５重量％ ニトロメタンを０．５重量％。 試験クーポン（ｔｅｓｔ ｃｏｕｐｏｎｓ）であるアルミニウム合金（２０２ ４）、マグネシウム（ＡＺ−３１Ｂ）およびチタン（ＭＩＬ−Ｔ−９０４６）を 布やすりで曇りがなくなって明るく輝くまで磨いた。次に、この磨いたクーポン を石鹸で洗浄した後、蒸留水で濯いだ。この濯いだクーポンを素手で取り扱わな いようにしてアセトンで乾燥させた。次に、この乾燥させたクーポンを上記溶媒 組成物に２４時間浸漬した。この浸漬期間中、上記溶媒組成物を還流に維持した 。２４時間後、上記クーポンを回収し、冷却した後、腐食を目で検査した。腐食 は全く観察されなかった。DETAILED DESCRIPTION OF THE INVENTION Stabilized Alkane Bromide Solvent Background of the Invention: The present invention is a novel high performance solvent composition based on a 1,4-dioxane-free stabilizer system and an alkane bromide solvent About. The degreasing and cleaning industry is currently faced with the saying that the use of 1,1,1-trichloroethane (TCE) as a cleaning solvent is banned. The ban is based on the fact that 1,1,1-trichloroethane has a relatively high ODP (potential for ozone depletion). Several alternatives have been proposed, but many have failed due to poor solvent performance, cost, toxicity and flammability. One alternative, n-propyl bromide, appears to be ideal. This is unlikely to deplete ozone and is acceptable. This shows that the solvent function is similar to that of 1,1,1-trichloroethane and that its production can be carried out at an acceptable cost with relatively high purity, ie 99 +% by weight. In addition, n-propyl bromide has shown promise in toxicity tests. Although there is some confusion in the art regarding the flammability it exhibits, recent tests have shown that it can be considered non-flammable. Experimental studies have shown that n-propyl bromide can be used in both cold and steam cleaning systems. Surprisingly, n-propyl bromide has been found to be fairly stable when used at low temperatures, i.e. below 55C. In the case of the cold wash system, tests have shown that n-propyl bromide requires little, if any, stabilization. However, when n-propyl bromide is used in a steam cleaning system, stabilization is required. Higher temperatures, ie, 69-71 ° C., can result in corrosion of metals such as steel, aluminum, titanium and magnesium. It is believed that this metal catalyzes the dehydrobromination reaction of n-propyl bromide to produce HBr, which in turn can be utilized in the corrosion of the metal. Stabilizers that reduce the catalytic activity of the metal and / or deactivate any resulting hydrogen halide are well described in the prior art. The areas where this prior art is most applicable are those areas of high interest, namely those relating to chlorohydrocarbon solvents. There are far fewer techniques available in the field of bromohydrocarbon solvents. The finding that brominated solvents are attractive in the art has only recently been vigorously explored to find the best combination of brominated solvent and stabilizer system. Although the possibilities of such combinations are myriad, those who find an ideal match between a particular bromide solvent and a particular stabilizer system will benefit. Due to today's health and environmental concerns, not all of the components contained in older prior art solvent systems are now considered to be acceptable candidates. For example, 1,4-dioxane, a very common stabilizer component that has been used for a long time, is currently not preferred due to health concerns. Accordingly, it is an object of the present invention to provide a degreasing and cleaning solvent that is both user and environmentally friendly and has a high effect. The present invention relates to a stabilized degreasing and cleaning solvent composition comprising a solvent portion comprising at least 90% by weight of n-propyl bromide and a nitroalkane, Includes a stabilizer system that includes the 1,2-butylene oxide and 1,3-dioxolane compositions and is free of 1,4-dioxane. Unless otherwise specified, the weight percentages and ppm values used herein are based on the total weight of the solvent composition. The n-propyl bromide is preferably provided to the composition as 99+ wt% n-propyl bromide, the most common impurity of which is isopropyl bromide. The weight percentages and ppm given in this paragraph are based on the total weight of n-propyl bromide and impurities. Commercially suitable n-propyl bromide may involve isopropyl bromide in amounts as high as 6% by weight. N-propyl bromide, which is much less pure, may be acceptable, but is not desirable. This impurity, isopropyl bromide, naturally exists in the raw product, n-propyl bromide, but its amount can be reduced by distillation. This is not a benign impurity because it shows much lower stability than n-propyl bromide, and therefore its presence can result in aggressive corrosion. A typical n-propyl bromide raw product contains 96% by weight n-propyl bromide and 4% by weight isopropyl bromide. For steam degreasing and washing, the isopropyl bromide content is preferably kept low, ie in the range of 0.01 to 0.5% by weight. N-Propyl bromide is commercially available from Albemarle Corporation (Richmond Virginia). As mentioned above, the present solvent system does not contain 1,4-dioxane, ie, it makes the solvent composition only the amount of impurities, ie less than 500 ppm. Preferably, no 1,4-dioxane is present in the present solvent composition. The nitroalkane component included in the present solvent system is preferably nitromethane, nitroethane or a mixture thereof. Nitromethane is most preferred. The amount of nitroalkane used is generally in the range of 0.045 to 1.0% by weight. Preferred amounts are in the range of 0.25 to 1.0% by weight, most preferably in the range of 0.3 to 0.6% by weight. The 1,2-butylene oxide component is generally present in an amount in the range of 0.045 to 1.0% by weight, preferably 0.25% to 1.0% by weight, most preferably 0.1% to 1.0% by weight. It is present in an amount ranging from 3 to 0.6% by weight. Suitable amounts of the 1,3-dioxolane component are in the range of 0.1 to 10.0% by weight. Suitable amounts are in the range from 2.0 to 6.0% by weight. It is within the scope of the present invention to use the solvent compositions of the present invention in the presence and cooperation of other solvents or solvent systems and additives. For example, the solvent composition of the present invention can be mixed with a solvent such as hexane or n-butyl bromide. Typical additives are anti-rust additives. The amount of the solvent composition of the present invention may be from 50% by weight to more than 90% by weight of the total weight of the solvent composition of the present invention and the above-mentioned other solvent or solvent system or additive. As described above, the amount of n-propyl bromide contained in the solvent composition of the present invention is quantitatively at least 90% by weight, and the rest of the stabilizer system of the present invention such as impurities such as isopropyl bromide. , And other optional additives desired by the practitioner. A typical solvent composition in which the n-propyl bromide used is not particularly pure contains 90-92% by weight of n-propyl bromide and 4-6% by weight of isopropyl bromide and 0.25% of nitromethane. -1. 0% by weight, 0.25-1.0% by weight of 1,2-butylene oxide and 2.0-6.0% by weight of 1,3-dioxolane. When n-propyl bromide has high purity, the content of n-propyl bromide may be 94 to 97% by weight of the present solvent composition. The solvent composition of the present invention is suitable for use in cold cleaning applications and steam cleaning operations. The former is generally characterized by immersing the article to be cleaned in the solvent composition, usually at a temperature in the range from room temperature to 55 ° C. Steam washing is characterized by passing the article to be washed through the vapor of the solvent composition, wherein the temperature of the article is such that the vapor condenses on its surface. This condensate falls after performing its washing function. The temperature of the vapor is generally a temperature close to the boiling point of the solvent composition, and the temperature in the instant case is about 65 to 75, depending on the particular quantitative and qualitative identification of the solvent composition used. ° C. For solvent compositions with very high n-propyl bromide content, i.e., greater than 95% by weight, the boiling point will be about 69-72C. Hereinafter, the effective properties of the solvent composition of the present invention will be described. This example is not intended to be construed in any way as limiting the scope of the invention described herein. EXAMPLES A solvent composition was prepared by mixing together the following materials: n-propyl bromide 96.5% by weight 1,3-dioxolane 2.5% by weight 1,2-butylene oxide 0% 0.5% by weight 0.5% by weight of nitromethane. Test coupons, aluminum alloy (2024), magnesium (AZ-31B), and titanium (MIL-T-9046) were polished with a cloth and sand to remove fogging and brighten. The polished coupon was then washed with soap and rinsed with distilled water. The rinsed coupon was dried with acetone without handling with bare hands. Next, the dried coupon was immersed in the solvent composition for 24 hours. During this immersion period, the solvent composition was maintained at reflux. Twenty-four hours later, the coupons were collected, cooled, and visually inspected for corrosion. No corrosion was observed.

Claims (1)

【特許請求の範囲】 １． 安定化された溶媒組成物であって、臭化ｎ−プロピルを少なくとも９０ 重量％含有する溶媒部分とニトロアルカン、１，２−ブチレンオキサイドおよび １，３−ジオキソランを含んでいて１，４−ジオキサンを含まない安定剤系部分 を含む溶媒組成物。 ２． 該ニトロアルカンがニトロメタン、ニトロエタンまたはそれらの混合物 である請求の範囲第１項記載の溶媒組成物。 ３． 該ニトロアルカンがニトロメタンである請求の範囲第１項記載の溶媒組 成物。 ４． 該溶媒部分が臭化ｎ−プロピルを９０から９２重量％含有する請求の範 囲第１項記載の溶媒組成物。 ５． 該溶媒部分が臭化ｎ−プロピルを９４から９８重量％含有する請求の範 囲第１項記載の溶媒組成物。 ６． 該安定剤系部分がニトロアルカンを０．０４５から１．０重量％、１， ２−ブチレンオキサイドを０．０４５から１．０重量％および１，３−ジオキソ ランを２．０−６．０重量％含む請求の範囲第１項記載の溶媒組成物。 ７． 該溶媒部分が臭化ｎ−プロピルを９０から９２重量％含有する請求の範 囲第６項記載の溶媒組成物。 ８． 該溶媒部分が臭化ｎ−プロピルを９４から９８重量％含有する請求の範 囲第６項記載の溶媒組成物。 ９． 物品を洗浄する方法であって、臭化ｎ−プロピルを少なくとも９０重量 ％含有する溶媒部分とニトロアルカン、１，２−ブチレンオキサイドおよび１， ３−ジオキソランを含んでいて１，４−ジオキサンを 含まない安定剤系部分を含む室温から５５℃の範囲内の温度の溶媒組成物に該物 品を浸漬することを含む方法。 １０． 物品を洗浄する方法であって、臭化ｎ−プロピルを少なくとも９０重 量％含有する溶媒部分とニトロアルカン、１，２−ブチレンオキサイドおよび１ ，３−ジオキソランを含んでいて１，４−ジオキサンを含まない安定剤系部分を 含む溶媒組成物の沸騰体から発散して来る蒸気に該物品をさらすことを含む方法 。[Claims]   1. A stabilized solvent composition comprising n-propyl bromide in at least 90%. Weight percent of the solvent portion and the nitroalkane, 1,2-butylene oxide and Stabilizer system part containing 1,3-dioxolane but not 1,4-dioxane A solvent composition comprising:   2. The nitroalkane is nitromethane, nitroethane or a mixture thereof; The solvent composition according to claim 1, which is:   3. 2. The solvent set according to claim 1, wherein said nitroalkane is nitromethane. Adult.   4. Claims wherein said solvent portion contains 90 to 92% by weight of n-propyl bromide. 2. The solvent composition according to item 1.   5. Claims wherein said solvent portion contains 94 to 98% by weight of n-propyl bromide. 2. The solvent composition according to item 1.   6. The stabilizer system portion contains nitroalkane at 0.045 to 1.0% by weight, 0.045 to 1.0% by weight of 2-butylene oxide and 1,3-dioxo 2. The solvent composition according to claim 1, comprising 2.0 to 6.0% by weight of a run.   7. Claims wherein said solvent portion contains 90 to 92% by weight of n-propyl bromide. 7. The solvent composition according to item 6.   8. Claims wherein said solvent portion contains 94 to 98% by weight of n-propyl bromide. 7. The solvent composition according to item 6.   9. A method for cleaning an article, comprising: n-propyl bromide at least 90% by weight. % Nitroalkane, 1,2-butylene oxide and 1, 1,3-dioxane containing 3-dioxolane The solvent composition at a temperature in the range of room temperature to 55 ° C. containing a stabilizer-based portion not containing A method comprising immersing the article.   10. A method of cleaning an article, comprising n-propyl bromide in at least 90 layers. % Nitroalkane, 1,2-butylene oxide and 1 A stabilizer system part containing 1,3-dioxolane and no 1,4-dioxane Exposing the article to vapor emanating from a boiling body of a solvent composition comprising the same. .
JP53183297A 1996-03-04 1997-02-26 Stabilized alkane bromide solvent Expired - Lifetime JP4082734B2 (en)

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