JP4111405B2 - Concentrated solution of fluorescent white dye - Google Patents

Concentrated solution of fluorescent white dye Download PDF

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Publication number
JP4111405B2
JP4111405B2 JP33232697A JP33232697A JP4111405B2 JP 4111405 B2 JP4111405 B2 JP 4111405B2 JP 33232697 A JP33232697 A JP 33232697A JP 33232697 A JP33232697 A JP 33232697A JP 4111405 B2 JP4111405 B2 JP 4111405B2
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Prior art keywords
parts
concentrated solution
water
present
formula
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
JP33232697A
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Japanese (ja)
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JPH11148025A (en
Inventor
忠雄 横塚
信孝 山本
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.)
Nippon Kayaku Co Ltd
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Nippon Kayaku Co Ltd
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Filing date
Publication date
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Priority to JP33232697A priority Critical patent/JP4111405B2/en
Publication of JPH11148025A publication Critical patent/JPH11148025A/en
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Description

【0001】
【発明の属する技術分野】
本発明は蛍光白色染料の濃厚溶液に関する。更に詳しくは酸析により得られる4,4’−ビス〔2−(4−スルフォアニリノ)−4−ジエタノールアミノー1,3,5−トリアジニルー6−アミノ〕スチルベンー2,2’−ジスルフォン酸又はこのアルカリ金属塩の濃厚溶液に関する。
【0002】
【従来の技術】
4,4’−ビス〔2−(4-スルフォアニリノ)−4−ジエタノールアミノー1,3,5−トリアジニルー6−アミノ〕スチルベンー2,2’−ジスルフォン酸は、下記式(1)
【0003】
【化1】

Figure 0004111405
【0004】
(式(1)においてMはH又はアルカリ金属を示す)
で示される優れた蛍光白色染料であって、通常粉体の形で市場に供給され、染色使用時には秤量、溶解の過程を経て水溶液として使用される。しかるに粉体を取り扱う常として、それらの操作には粉体が飛散したり、また溶解に時間がかかるなどの作業上好ましからざる欠点が付随する。
【0005】
【発明が解決しようとする課題】
本発明の目的とすることは、粉体の飛散による作業環境の低下を起こさず、かつ溶解性を高め、高濃度での使用を可能にして、自動化機器に容易に対応できるような式(1)の化合物の濃厚なる溶液を提供することである。
【0006】
【課題を解決するための手段】
本発明者らは式(1)の化合物の安定な濃厚溶液を得るべく鋭意研究を重ねた結果本発明に至ったものである。即ち、本発明は
(1)酸析により得られる4,4’−ビス〔2−(4−スルフォアニリノ)ー4−ジエタノールアミノー1,3,5−トリアジニルー6−アミノ〕スチルベンー2,2’一ジスルフォン酸又はこのアルカリ金属塩及びアルカノールアミノを含有することを特徴とする蛍光白色染料の濃厚溶液、
を提供する。
【0007】
【発明の実施の形態】
本発明を詳細に説明する。本発明において式(1)の化合物は、例えば特公昭33−7638に記載の方法によって製造される。式(1)の化合物のNa塩を鉱酸により酸析して式(1)の化合物においてMが水素であるものを得るか、これを更に水中において水酸化アルカリで処理して式(1)の化合物においてMがアルカリ金属である化合物を得る。反応液に塩酸を加え、例えばpH2〜3で酸析した溶液を圧搾プレスで絞り、得られたプレスケーキ中に含まれる塩素イオンの濃度を1.5〜3%に押さえることが好ましい。
【0007】
本発明においてはMがH又はLiであるものを用いるのが好ましい。式(1)の化含物の濃厚溶液中に占める割合は、遊離酸として、通常10〜50%、好ましくは15〜35%(重量比)である。
【0008】
本発明においてアルカノールアミンの例としてはモノエタノールアミン、ジエタノールアミン、トリエタノールアミン、トリイソプロパノールアミン、メチルジエタノールアミン等が挙げられるが、特にトリエタノールアミン、トリイソプロパノールアミンの使用が好ましい。本発明の濃厚溶液においてアルカノールアミンの好ましい含有率は5〜25%より好ましくは8〜16%(重量比)である。
【0009】
本発明の濃厚溶液においてはアルカノールアミンの他に、必要により、グリコール類、尿素等の通常の溶解剤、防かび剤等を加えることが出来る。グリコール類としては、例えばエチレングリコール、ジエチレングリコール、ポリエチレングリコール等があげられ、これらは濃厚溶液に、必要により、1〜10%(重量比)添加される。又、尿素も、必要により、濃厚溶液に1〜15%(重量比)の範囲で添加される。又、水は通常40〜70%(重量比)の含有率になるように加えられる。
【0010】
本発明の濃厚溶液は前記した各種薬剤を水に単に混合溶解することによって得られる。なお混合溶解したあと、必要により、ろ過を行って狭雑物等の不溶性物質を除去することが好ましい。このようにして得られる本発明の濃厚溶液は粉塵が立たないのはもちろん長期間保存しても式(1)で示される化合物(蛍光白色染料)が沈澱をおこしたり分解したりすることがない。又低温保存における凍結、高温保存における水分蒸発をおこしにくい。
【0011】
【実施例】
以下に実施例によって本発明を説明する。実施例中、部は重量部を意味する。
【0012】
実施例1
4,4’一ビス〔2−(4-スルフォアニリノ)ー4一ジエタノールアミノー1,3,5−トリアジニルー6一アミノ]スチルベンー2,2’−ジスルフォン酸の反応液に塩酸を加え、pH2〜3で酸析した溶液を濾過し(圧搾プレスで絞り)、得られたウェットケーキ50部〔染料分25部、水分25部〕にトリエタノールアミン40部、ポリエチレングリコール3部及び水35部を添加して、1〜2時間撹拌をすることにより該ウェットケーキを溶解後、スクリーニングにより不溶残渣を除去する。このようにして得た本発明の濃厚溶液は極めて安定であり、−10℃〜60℃での長期保存(半年以上)にも耐え、透明な溶液状を保持した。また染色性、物理的性質の劣化も認められなかった。尚、このウェットケーキの塩素イオン濃度を測定したところ、2%であった。
【0013】
実施例2
実施例1と同様に処理し得られた式(1)の化合物(MがHのもの)50部(染料分30部、水20部)に、トリエタノールアミン10部、ジエチレングリコール1部、尿素8部、更に水20部を加え、1〜2時間撹拌をすることにより、溶解をさせ、スクリーニングをした後で、濃度調整のため水11部を加えて、全液量100部の本発明の濃厚溶液を得た。このものは実施例1の目的物と同様の優れた性質を示した。
【0014】
実施例3
実施例1と同様に処理し得られた4,4’一ビス〔2−(4−スルフォアニリノ)ー4−ジエタノールアミノー1,3,5−トリアジニルー6−アミノ〕スチルベンー2,2’−ジスルフォン酸50部(染料分30部、水分20部)にトリエタノールアミン14部、更に水30部を添加して、1〜2時間撹拌をすることにより、溶解させた後、スクリーニングにより不溶残渣を除去する。最後に濃度調整のため水6部を加えて、全液量100部の本発明の濃厚溶液を得た。このようにして得た濃厚溶液は極めて安定であり、−10℃〜60℃での長期保存(半年以上)に耐え、透明な溶液を保持した。また染色性、物理的性質の劣化も認められなかった。
【0015】
実施例4
実施例1と同様に処理し得られた式(1)の化含物(MがHである化合物)50部(染料分25部、水分25部)に、トリイソプロパノールアミン10部、ジエチレングリコール2部、更に水30部を加え、1〜2時間撹拌をすることにより、溶解をさせ、スクリーニングをした後で、濃度調整のため水8部を加えて、全液量100部の本発明の濃厚溶液を得た。このものは実施例1と同様の優れた性質を示した。
【0016】
実施例5
実施例1と同様に処理し得られた式(1)の化合物においてMがH及びLiが混在している化合物についても実施例4と同様にして本発明の濃厚溶液を得た。
【0017】
【発明の効果】
4,4’ービス〔2−(4−スルフォアニリノ)一4一ジエタノールアミノー1,3,5−トリアジニルー6一アミノ〕スチルベンー2,21−ジスルフォン酸又はそのアルカリ金属塩について長期保存にも安定な濃厚溶液が得られた。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a concentrated solution of fluorescent white dye. More specifically, 4,4′-bis [2- (4-sulfoanilino) -4-diethanolamino-1,3,5-triazinyl-6-amino] stilbene-2,2′-disulfonic acid obtained by acid precipitation or an alkali metal thereof It relates to a concentrated solution of salt.
[0002]
[Prior art]
4,4′-bis [2- (4-sulfoanilino) -4-diethanolamino-1,3,5-triazinyl-6-amino] stilbene-2,2′-disulfonic acid is represented by the following formula (1):
[0003]
[Chemical 1]
Figure 0004111405
[0004]
(In formula (1), M represents H or an alkali metal)
It is an excellent fluorescent white dye represented by the formula (1) and is usually supplied to the market in the form of powder, and is used as an aqueous solution after weighing and dissolving when used for dyeing. However, as with the usual handling of powder, these operations are accompanied by disadvantages that are undesirable from the viewpoint of work, such as powder scattering and dissolution.
[0005]
[Problems to be solved by the invention]
It is an object of the present invention to provide a formula (1) that does not cause a decrease in working environment due to powder scattering, enhances solubility, enables use at a high concentration, and can be easily applied to automated equipment. ) To provide a concentrated solution of the compound.
[0006]
[Means for Solving the Problems]
As a result of intensive studies to obtain a stable concentrated solution of the compound of formula (1), the present inventors have arrived at the present invention. That is, the present invention relates to (1) 4,4′-bis [2- (4-sulfoanilino) -4-diethanolamino-1,3,5-triazinyl-6-amino] stilbene-2,2′-disulfone obtained by acid precipitation. A concentrated solution of a fluorescent white dye characterized by containing an acid or an alkali metal salt thereof and an alkanolamino;
I will provide a.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
The present invention will be described in detail. In the present invention, the compound of formula (1) is produced, for example, by the method described in JP-B-33-7638. The Na salt of the compound of the formula (1) is acidified with a mineral acid to obtain a compound of the formula (1) in which M is hydrogen, or this is further treated with an alkali hydroxide in water to obtain the formula (1) In which M is an alkali metal. It is preferable to add hydrochloric acid to the reaction solution, squeeze the solution acidified at pH 2 to 3, for example, with a pressing press, and suppress the concentration of chlorine ions contained in the obtained press cake to 1.5 to 3%.
[0007]
In the present invention, it is preferable to use one in which M is H or Li. The ratio of the compound of formula (1) in the concentrated solution is usually 10 to 50%, preferably 15 to 35% (weight ratio) as a free acid.
[0008]
In the present invention, examples of the alkanolamine include monoethanolamine, diethanolamine, triethanolamine, triisopropanolamine, methyldiethanolamine and the like, and the use of triethanolamine and triisopropanolamine is particularly preferable. In the concentrated solution of the present invention, the preferable content of alkanolamine is 5 to 25%, more preferably 8 to 16% (weight ratio).
[0009]
In the concentrated solution of the present invention, in addition to alkanolamine, a normal solubilizing agent such as glycols and urea, a fungicide, and the like can be added as necessary. Examples of glycols include ethylene glycol, diethylene glycol, polyethylene glycol, and the like, and these are added to the concentrated solution if necessary in an amount of 1 to 10% (weight ratio). Urea is also added to the concentrated solution in the range of 1 to 15% (weight ratio) if necessary. Further, water is usually added so as to have a content of 40 to 70% (weight ratio).
[0010]
The concentrated solution of the present invention can be obtained by simply mixing and dissolving the aforementioned various drugs in water. In addition, after mixing and dissolving, if necessary, it is preferable to perform filtration to remove insoluble substances such as impurities. The concentrated solution of the present invention thus obtained is not dusty, of course, and the compound represented by the formula (1) (fluorescent white dye) does not precipitate or decompose even when stored for a long time. . Also, it is difficult to freeze during low temperature storage and evaporate water during high temperature storage.
[0011]
【Example】
The following examples illustrate the invention. In the examples, parts mean parts by weight.
[0012]
Example 1
Hydrochloric acid was added to the reaction solution of 4,4′-bis [2- (4-sulfoanilino) -4-diethanolamino-1,3,5-triazinyl-6-amino] stilbene-2,2′-disulfonic acid at pH 2-3. The acidified solution was filtered (squeezed with a press) and 40 parts of triethanolamine, 3 parts of polyethylene glycol and 35 parts of water were added to 50 parts of the obtained wet cake [25 parts of dye, 25 parts of water]. The insoluble residue is removed by screening after dissolving the wet cake by stirring for 1 to 2 hours. The concentrated solution of the present invention thus obtained was extremely stable, withstood long-term storage at -10 ° C to 60 ° C (half a year or more), and kept a transparent solution. Also, no deterioration of dyeability and physical properties was observed. The chlorine ion concentration of this wet cake was measured and found to be 2%.
[0013]
Example 2
50 parts of the compound of the formula (1) obtained by the same treatment as in Example 1 (M is H) (dye content 30 parts, water 20 parts), triethanolamine 10 parts, diethylene glycol 1 part, urea 8 Part, then 20 parts of water and stirring for 1-2 hours to dissolve and screen, then add 11 parts of water to adjust the concentration, the total liquid volume of 100 parts of the present invention A solution was obtained. This exhibited excellent properties similar to the target product of Example 1.
[0014]
Example 3
4,4′-Bis [2- (4-sulfoanilino) -4-diethanolamino-1,3,5-triazinyl-6-amino] stilbene-2,2′-disulfonic acid 50 obtained in the same manner as in Example 1. After adding 14 parts of triethanolamine and 30 parts of water to 30 parts (dye content 30 parts, moisture 20 parts) and stirring for 1 to 2 hours, dissolution is performed, and then insoluble residues are removed by screening. Finally, 6 parts of water was added for concentration adjustment to obtain a concentrated solution of the present invention having a total liquid amount of 100 parts. The concentrated solution thus obtained was extremely stable, withstood long-term storage (more than half a year) at -10 ° C to 60 ° C, and kept a transparent solution. Also, no deterioration of dyeability and physical properties was observed.
[0015]
Example 4
50 parts of the compound of the formula (1) obtained by the same treatment as in Example 1 (compound in which M is H) (25 parts of dye component, 25 parts of water), 10 parts of triisopropanolamine and 2 parts of diethylene glycol Furthermore, after adding 30 parts of water and stirring for 1 to 2 hours for dissolution and screening, 8 parts of water was added to adjust the concentration, and the concentrated solution of the present invention having a total liquid amount of 100 parts. Got. This exhibited excellent properties similar to Example 1.
[0016]
Example 5
A concentrated solution of the present invention was obtained in the same manner as in Example 4 for the compound of the formula (1) obtained by the same treatment as in Example 1, in which M was mixed with H and Li.
[0017]
【The invention's effect】
Concentrated solution of 4,4'-bis [2- (4-sulfoanilino) 14-diethanolamino-1,3,5-triazinyl-6-amino] stilbene-2,21-disulfonic acid or an alkali metal salt thereof which is stable for long-term storage was gotten.

Claims (1)

4,4−ビス〔2−(4−スルフォアニリノ)−4−ジエタノールアミノ−1,3,5−トリアジニル−6−アミノ〕スチルベン−2,2’−ジスルフォン酸のアルカリ金属塩に塩酸を加え、pH2〜3で酸析した溶液を圧搾プレスし、得られた塩素イオン濃度が1.5〜3%であるウェットケーキに、トリエタノールアミン又はトリイソプロパノールアミン、ポリエチレングリコール及び水を添加することを特徴とする蛍光白色染料の濃厚溶液の製造方法。Hydrochloric acid is added to an alkali metal salt of 4,4-bis [2- (4-sulfoanilino) -4-diethanolamino-1,3,5-triazinyl-6-amino] stilbene-2,2′-disulfonic acid, pH 2 Squeeze-press the solution acidified in ˜3, and add triethanolamine or triisopropanolamine , polyethylene glycol and water to the wet cake having a chlorine ion concentration of 1.5 to 3%. A method for producing a concentrated solution of fluorescent white dye.
JP33232697A 1997-11-18 1997-11-18 Concentrated solution of fluorescent white dye Expired - Fee Related JP4111405B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP33232697A JP4111405B2 (en) 1997-11-18 1997-11-18 Concentrated solution of fluorescent white dye

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP33232697A JP4111405B2 (en) 1997-11-18 1997-11-18 Concentrated solution of fluorescent white dye

Publications (2)

Publication Number Publication Date
JPH11148025A JPH11148025A (en) 1999-06-02
JP4111405B2 true JP4111405B2 (en) 2008-07-02

Family

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Family Applications (1)

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Country Status (1)

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