Deprecated: The each() function is deprecated. This message will be suppressed on further calls in /home/zhenxiangba/zhenxiangba.com/public_html/phproxy-improved-master/index.php on line 456
JP3937106B2 - Hydroxylamine composition - Google Patents
[go: Go Back, main page]

JP3937106B2 - Hydroxylamine composition - Google Patents

Hydroxylamine composition Download PDF

Info

Publication number
JP3937106B2
JP3937106B2 JP13848497A JP13848497A JP3937106B2 JP 3937106 B2 JP3937106 B2 JP 3937106B2 JP 13848497 A JP13848497 A JP 13848497A JP 13848497 A JP13848497 A JP 13848497A JP 3937106 B2 JP3937106 B2 JP 3937106B2
Authority
JP
Japan
Prior art keywords
hydroxylamine
stabilizer
ppm
added
thiourea
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP13848497A
Other languages
Japanese (ja)
Other versions
JPH10330105A (en
Inventor
健一 高橋
博紀 山崎
幸哉 増田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Gas Chemical Co Inc
Original Assignee
Mitsubishi Gas Chemical Co Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Gas Chemical Co Inc filed Critical Mitsubishi Gas Chemical Co Inc
Priority to JP13848497A priority Critical patent/JP3937106B2/en
Publication of JPH10330105A publication Critical patent/JPH10330105A/en
Application granted granted Critical
Publication of JP3937106B2 publication Critical patent/JP3937106B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Anti-Oxidant Or Stabilizer Compositions (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Detergent Compositions (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は、安定化されたヒドロキシルアミン組成物に関するものである。
【0002】
【従来の技術】
ヒドロキシルアミン及びその塩類は、酸化防止等を目的として各種金属表面処理、脱酸素剤として各種ボイラー系、医薬品合成・農薬合成の原料、繊維の漂白、染色、写真等の各種分野において用いられている。
【0003】
しかし、遊離のヒドロキシルアミンは極めて不安定である為、通常は比較的安定である塩酸塩、硫酸塩等の塩類の形として使用されている。だが、これらの用途の多くは、ヒドロキシルアミンの塩を必要としてはおらず、遊離のヒドロキシルアミンのみを必要としている。この為、ヒドロキシルアミンを目的の処理に供した後に、生成した塩等の不要物を除去或いは処分する必要が生じる場合もある。又、場合によってはヒドロキシルアミン塩をアルコール等の有機溶媒中で苛性ソーダ等のアルカリで中和後、析出した塩化ナトリウム等の塩を濾過し、遊離ヒドロキシルアミンを得てから目的の処理に用いることもある。
【0004】
これらのヒドロキシルアミンが塩で供給されることに起因する種々の作業は、濾過・遠心分離等の操作を必要とするため煩雑であり、且つ、除去・処分される不要物中に含まれる有用なヒドロキシルアミンを完全に取り除くことは困難であり経済上の損失も無視できない。従って、ヒドロキシルアミンを遊離の状態で安定して保存し、塩であることに由来する種々の煩雑な操作を行うことなくヒドロキシルアミンを目的の処理に供することが各分野より要求されており、従来より、いくつかの方法が提案されている。
【0005】
例えば、特開昭60−131812号公報、特開昭60−131813号公報、特開昭60−137809号公報には、それぞれ、オキシアンスラキノン、フラバン、フラボンを用いたヒドロキシルアミンの安定化溶液及びその製造方法について、又、特公昭59−5573号公報、特公昭59−5574号公報、特公昭59−5575号公報には、それぞれ、1,10−フェナントロリン、ジピリジン、キノリンからなるヒドロキシルアミンの安定化剤について示されている。
【0006】
しかし、これらの安定化剤はヒドロキシルアミン或いはヒドロキシルアミン溶液に対しての最適使用濃度は100ppm以上であり、さらに高分子の有機物であるため、前述した様々な分野でヒドロキシルアミンを使用した際に、安定化剤が何らかの支障を来すことが予想される。さらに、重要視されるヒドロキシルアミンの安定性に関しては、ある程度の効果は見られるものの、長期間保存においては決して満足のいくものとは言い難く改善を要した。
【0007】
【発明が解決しようとする課題】
本発明は、遊離の状態では不安定であるヒドロキシルアミンに対して、従来よりも少量の使用で、且つ、長期間保存における安定化効果を持つ安定化剤を提供することである。
【0008】
【課題を解決するための手段】
ヒドロキシルアミンは遊離の状態では非常に不安定である為、従来より種々の安定化剤が提案されているが、本発明者は、特定の基を有する化合物をヒドロキシルアミン或いはヒドロキシルアミン溶液に添加させることにより、従来よりも少量で、且つ、長期間安定性の高いヒドロキシルアミンを得ることが可能になる安定剤を見い出した。
【0009】
即ち、本発明は、下記式(1)の基を有する化合物を含有することを特徴とするヒドロキシルアミン組成物に関するものである。
【化2】

Figure 0003937106
【0010】
【発明の実施の形態】
安定化剤に用いる式(1)の基を有する化合物として、チオホルムアミド、チオアセトアミド、チオプロピオンアミド、チオベンズアミド、チオニコチンアミド、チオアセトアニリド、チオベンズアニリド、チオ尿素、1,3-ジメチルチオ尿素、1,3-ジエチル−2-チオ尿素、1-フェニル−2-チオ尿素、1,3-ジフェニル−2-チオ尿素、チオカルバジド、チオセミカルバジド、4,4-ジメチル−3-チオセミカルバジド、2-メルカプトイミダゾリン、2-チオウラシル、2-チオヒダントイン、3-チオウラゾール、2-チオウラミル、4-チオウラミル、チオペンタール、2-チオバルビツール酸、チオシアヌル酸、2-メルカプトキノリン、チオクマゾン、チオクモチアゾン、チオサッカリン、2-メルカプトベンズイミダゾール等である。これらのうち、チオアセトアミド、チオ尿素、2-チオウラシル、チオシアヌル酸が好ましい。
【0011】
安定化剤に用いる式(1)の基を有する化合物において、水溶性のものはそのままヒドロキシルアミン溶液に添加して構わないが、非水溶性のものはメタノール、エタノール等のアルコール類やアセトン、アセトニトリル、テトラヒドロフラン等の水溶性有機溶剤で溶解させてから、ヒドロキシルアミン溶液に添加する。
【0012】
安定化剤に用いる式(1)の基を有する化合物の濃度に特に制限はないが、好ましくは、安定化されるヒドロキシルアミン溶液に対して、0.1ppm〜1,000ppmであり、更に好ましくは、0.1ppm〜100ppmである。0.1ppm未満では、安定化効果が充分に得られない場合があり、1,000ppmを超えると、経済上好ましくない。安定化剤に用いる式(1)の基を有する化合物は、一種類のみを用いても良いし、二種類以上を混合して用いても良い。本発明のヒドロキシルアミン組成物は、必要に応じて、他の界面活性剤、キレート剤、有機酸、防錆剤、低温安定化剤、消泡剤、酸化防止剤、防腐剤を配合することもできる。
【0013】
【実施例】
以下に実施例及び比較例を示し、本発明を具体的に説明するが、以下の実施例に限定されるものではない。尚、ヒドロキシルアミン濃度は、JIS-K8993 の濃度分析法に準じて測定した。
【0014】
実施例1
25重量%ヒドロキシルアミン水溶液に、安定化剤としてチオアセトアミドを0.5ppm添加した。この水溶液を40℃で保存し、所定時間経過後のヒドロキシルアミン濃度を測定した。
【0015】
実施例2
実施例1において、安定剤としてチオアセトアミドを添加する代わりに、チオ尿素を1ppm添加した以外は、実施例1と同様に行った。
【0016】
実施例3
実施例1において、安定剤としてチオアセトアミドを添加する代わりに、2-チオウラシル2ppm添加した以外は、実施例1と同様に行った。
【0017】
実施例4
実施例1において、安定剤としてチオアセトアミドを添加する代わりに、チオシアヌル酸3ppm添加した以外は、実施例1と同様に行った。
【0018】
比較例1
実施例1において、安定剤としてチオアセトアミドを添加しなかった以外は、実施例1と同様に行った。
【0019】
比較例2
実施例1において、チオアセトアミドを添加する代わりに、1,10−フェナントロリンを50ppm添加した以外は、実施例1と同様に行った。
【0020】
実施例5
テストピース(42アロイ:鉄−ニッケル合金)を化学研磨しバリ取り、光輝化処理を施し、次に室温で安定剤としてチオ尿素1ppmを添加した0.1重量%のヒドロキシルアミン水溶液に10秒間浸せきさせる。これをヒドロキシルアミン水溶液が付着したまま80℃の箱形乾燥機で乾燥させる。
【0021】
実施例6
実施例5において、安定剤としてチオ尿素を添加する代わりにチオシアヌル酸を2ppm添加した以外は実施例5と同様に行った。
【0022】
比較例3
実施例5において、安定剤としてチオ尿素を添加しなかった以外は、実施例5と同様に行った。
【0023】
比較例4
実施例5において、安定剤としてチオ尿素を添加する代わりに、1,10−フェナントロリンを50ppm添加した以外は、実施例5と同様に行った。
【0024】
上記の各実施例及び各比較例において、所定時間経過後のヒドロキシルアミン濃度の減少量を、初期のヒドロキシルアミン濃度を100とした時の残存率(重量%)として算出し、実施例1〜4及び比較例1、2に関する結果を(表1)に、さらに実施例5,6及び比較例3,4に関する金属をヒドロキシルアミン水溶液に浸せきし、乾燥後の目視での外観評価の結果を(表2)に示した。
【0025】
【発明の効果】
本発明におけるヒドロキシルアミン組成物により、金属表面処理等の効果を損なうことなく、遊離ヒドロキシルアミンを長期間にわたり濃度減少の少ない、安定な状態で保存することが可能となる。
【0026】
【表1】
Figure 0003937106
【0027】
【表2】
Figure 0003937106
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to stabilized hydroxylamine compositions.
[0002]
[Prior art]
Hydroxylamine and its salts are used in various fields such as various metal surface treatments for the purpose of oxidation prevention, various boiler systems as oxygen scavengers, raw materials for pharmaceutical synthesis and agrochemical synthesis, fiber bleaching, dyeing and photography. .
[0003]
However, since free hydroxylamine is extremely unstable, it is usually used in the form of salts such as hydrochloride and sulfate which are relatively stable. However, many of these applications do not require hydroxylamine salts, only free hydroxylamine. For this reason, after subjecting hydroxylamine to the intended treatment, it may be necessary to remove or dispose of unnecessary substances such as the generated salt. In some cases, the hydroxylamine salt may be neutralized with an alkali such as caustic soda in an organic solvent such as alcohol, and then the precipitated salt such as sodium chloride is filtered to obtain free hydroxylamine before use in the intended treatment. is there.
[0004]
Various operations resulting from the supply of these hydroxylamines as salts are cumbersome because operations such as filtration and centrifugation are required, and are useful in unnecessary materials to be removed and disposed of. It is difficult to completely remove hydroxylamine, and economic loss cannot be ignored. Therefore, it has been required from various fields that hydroxylamine is stably stored in a free state, and hydroxylamine is subjected to a desired treatment without performing various complicated operations derived from being a salt. Several methods have been proposed.
[0005]
For example, in JP-A-60-131812, JP-A-60-133181, and JP-A-60-137809, respectively, a hydroxylamine stabilizing solution using oxyanthraquinone, flavan, and flavone, and Regarding its production method, and Japanese Patent Publication No. 59-5573, Japanese Patent Publication No. 59-5574, and Japanese Patent Publication No. 59-5575, respectively, the stability of hydroxylamine comprising 1,10-phenanthroline, dipyridine and quinoline, respectively. The agent is shown.
[0006]
However, these stabilizers have an optimum use concentration of 100 ppm or more with respect to hydroxylamine or a hydroxylamine solution, and are high molecular organic substances. Therefore, when hydroxylamine is used in various fields as described above, It is expected that the stabilizer will cause some trouble. Furthermore, regarding the stability of hydroxylamine, which is regarded as important, although a certain degree of effect is seen, it is hardly satisfactory in long-term storage and needs to be improved.
[0007]
[Problems to be solved by the invention]
An object of the present invention is to provide a stabilizer having a stabilizing effect for long-term storage with respect to hydroxylamine, which is unstable in a free state, by using a smaller amount than before.
[0008]
[Means for Solving the Problems]
Since hydroxylamine is very unstable in the free state, various stabilizers have been proposed in the past, but the present inventors add a compound having a specific group to hydroxylamine or a hydroxylamine solution. Thus, the present inventors have found a stabilizer that makes it possible to obtain a hydroxylamine that is less in amount than conventional and highly stable for a long period of time.
[0009]
That is, this invention relates to the hydroxylamine composition characterized by including the compound which has group of following formula (1).
[Chemical 2]
Figure 0003937106
[0010]
DETAILED DESCRIPTION OF THE INVENTION
As a compound having a group of formula (1) used as a stabilizer, thioformamide, thioacetamide, thiopropionamide, thiobenzamide, thionicotinamide, thioacetanilide, thiobenzanilide, thiourea, 1,3-dimethylthiourea, 1,3-diethyl-2-thiourea, 1-phenyl-2-thiourea, 1,3-diphenyl-2-thiourea, thiocarbazide, thiosemicarbazide, 4,4-dimethyl-3-thiosemicarbazide, 2-mercapto Imidazoline, 2-thiouracil, 2-thiohydantoin, 3-thiourazole, 2-thiouramil, 4-thiouramil, thiopental, 2-thiobarbituric acid, thiocyanuric acid, 2-mercaptoquinoline, thiocoumazone, thiocomotiazone, thiosaccharin, 2-mercapto Such as benzimidazole. Of these, thioacetamide, thiourea, 2-thiouracil, and thiocyanuric acid are preferable.
[0011]
Of the compounds having the group of formula (1) used for the stabilizer, water-soluble compounds may be added to the hydroxylamine solution as they are, but water-insoluble compounds are alcohols such as methanol and ethanol, acetone and acetonitrile. Then, it is dissolved in a water-soluble organic solvent such as tetrahydrofuran and then added to the hydroxylamine solution.
[0012]
Although there is no restriction | limiting in particular in the density | concentration of the compound which has group of Formula (1) used for a stabilizer, Preferably, it is 0.1 ppm-1,000 ppm with respect to the hydroxylamine solution to be stabilized, More preferably 0.1 ppm to 100 ppm. If it is less than 0.1 ppm, the stabilizing effect may not be sufficiently obtained, and if it exceeds 1,000 ppm, it is not economically preferable. Only one type of compound having the group of the formula (1) used for the stabilizer may be used, or two or more types may be mixed and used. The hydroxylamine composition of the present invention may be blended with other surfactants, chelating agents, organic acids, rust inhibitors, low-temperature stabilizers, antifoaming agents, antioxidants, and preservatives as necessary. it can.
[0013]
【Example】
EXAMPLES The present invention will be specifically described below with reference to examples and comparative examples, but is not limited to the following examples. The hydroxylamine concentration was measured according to the concentration analysis method of JIS-K8993.
[0014]
Example 1
0.5 ppm of thioacetamide as a stabilizer was added to a 25% by weight hydroxylamine aqueous solution. This aqueous solution was stored at 40 ° C., and the concentration of hydroxylamine after a predetermined time was measured.
[0015]
Example 2
In Example 1, it carried out like Example 1 except having added 1 ppm of thiourea instead of adding thioacetamide as a stabilizer.
[0016]
Example 3
In Example 1, it carried out like Example 1 except having added 2 ppm 2-thiouracil instead of adding thioacetamide as a stabilizer.
[0017]
Example 4
In Example 1, it carried out like Example 1 except having added 3 ppm of thiocyanuric acid instead of adding thioacetamide as a stabilizer.
[0018]
Comparative Example 1
In Example 1, it carried out like Example 1 except not having added thioacetamide as a stabilizer.
[0019]
Comparative Example 2
In Example 1, it carried out similarly to Example 1 except having added 50 ppm of 1, 10- phenanthroline instead of adding thioacetamide.
[0020]
Example 5
A test piece (42 alloy: iron-nickel alloy) was chemically polished, deburred, brightened, and then immersed in a 0.1 wt% aqueous hydroxylamine solution with 1 ppm thiourea added at room temperature for 10 seconds. Let This is dried in a box dryer at 80 ° C. with the hydroxylamine aqueous solution attached.
[0021]
Example 6
In Example 5, it carried out like Example 5 except having added 2 ppm of thiocyanuric acid instead of adding thiourea as a stabilizer.
[0022]
Comparative Example 3
In Example 5, it carried out like Example 5 except not having added thiourea as a stabilizer.
[0023]
Comparative Example 4
In Example 5, it carried out like Example 5 except having added 50 ppm of 1,10-phenanthroline instead of adding thiourea as a stabilizer.
[0024]
In each of the above Examples and Comparative Examples, the amount of decrease in the hydroxylamine concentration after the lapse of a predetermined time was calculated as a residual ratio (% by weight) when the initial hydroxylamine concentration was 100, and Examples 1-4 The results for Comparative Examples 1 and 2 are shown in (Table 1), and the metals for Examples 5 and 6 and Comparative Examples 3 and 4 are dipped in a hydroxylamine aqueous solution. 2).
[0025]
【The invention's effect】
The hydroxylamine composition in the present invention makes it possible to store free hydroxylamine in a stable state with little decrease in concentration over a long period of time without impairing the effect of metal surface treatment or the like.
[0026]
[Table 1]
Figure 0003937106
[0027]
[Table 2]
Figure 0003937106

Claims (1)

チオアセトアミド、2−チオウラシルまたはチオシアヌル酸を含有することを特徴とするヒドロキシルアミン組成物。A hydroxylamine composition comprising thioacetamide, 2-thiouracil or thiocyanuric acid.
JP13848497A 1997-05-28 1997-05-28 Hydroxylamine composition Expired - Fee Related JP3937106B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13848497A JP3937106B2 (en) 1997-05-28 1997-05-28 Hydroxylamine composition

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13848497A JP3937106B2 (en) 1997-05-28 1997-05-28 Hydroxylamine composition

Publications (2)

Publication Number Publication Date
JPH10330105A JPH10330105A (en) 1998-12-15
JP3937106B2 true JP3937106B2 (en) 2007-06-27

Family

ID=15223173

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13848497A Expired - Fee Related JP3937106B2 (en) 1997-05-28 1997-05-28 Hydroxylamine composition

Country Status (1)

Country Link
JP (1) JP3937106B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4624914B2 (en) * 2004-12-06 2011-02-02 昭和電工株式会社 Hydroxylamine stabilizer, stabilization method and stabilized hydroxylamine solution

Also Published As

Publication number Publication date
JPH10330105A (en) 1998-12-15

Similar Documents

Publication Publication Date Title
JPS5821028B2 (en) Dou Oyobi Dougokin no Kagakutsuyadashiyouki
US2628199A (en) Tarnish remover
JP3181347B2 (en) Method for stabilizing amine oxide and amine oxide composition containing stabilizer
JPH01503470A (en) Etching of copper and copper-containing alloys
JP4172662B2 (en) Metal surface treatment method
CN115836143B (en) Chemical polishing liquid and surface treatment method for surface treatment of copper or copper alloy
CA1117275A (en) Stabilized hydrogen peroxide solutions
JPH04231484A (en) Phenyl mercaptotetrazole/tolyl triazole corrosion inhibitory composition
US4634584A (en) Stabilized solutions of hydroxylamine or its salts in water or alcohols, and their preparation
JP3937106B2 (en) Hydroxylamine composition
JPH0327304A (en) Disinfectant concentrate
US5215624A (en) Milling solution and method
DK162834B (en) STABILIZED SOLUTIONS OF HYDROXYLAMINE OR SALTS THEREOF IN WATER OR ALCOHOLS AND PROCEDURES FOR THE PREPARATION OF SUCH SOLUTIONS
JP3209105B2 (en) Silver sulfide film cleaning agent
JP4731783B2 (en) Stabilizers for hydroxylamine solutions
JP3806869B2 (en) Descaler and inhibitor
US5214089A (en) Stabilized aqueous solution of a C1 -C5 alkyl vinyl ether and maleic acid copolymer
HU212487B (en) Baths and method for chemically polishing stainless steel surfaces
JP2003096579A (en) Composition for preventing discoloration and corrosion of silver or silver plating or silver alloy or silver alloy plating
JP2012213756A (en) Water treatment chemical and method for stabilizing the same
US3333001A (en) Stabilized n, n-dialkylhydroxylamine compositions
US3460938A (en) Compositions for the method of selectively dissolving nickel from other metals
JP2003328159A (en) Surface treatment agent
JPS60133074A (en) Paint stripper composition
GB2106086A (en) Stabilization of hydrogen peroxide solutions

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20040405

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20061130

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20061206

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20070201

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20070228

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20070313

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20100406

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110406

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130406

Year of fee payment: 6

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130406

Year of fee payment: 6

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140406

Year of fee payment: 7

LAPS Cancellation because of no payment of annual fees