CH272754A - Process for the preparation of a whitening agent for proteinaceous fibers. - Google Patents
Process for the preparation of a whitening agent for proteinaceous fibers.Info
- Publication number
- CH272754A CH272754A CH272754DA CH272754A CH 272754 A CH272754 A CH 272754A CH 272754D A CH272754D A CH 272754DA CH 272754 A CH272754 A CH 272754A
- Authority
- CH
- Switzerland
- Prior art keywords
- mol
- nitro
- amino
- ammonia
- acid
- Prior art date
Links
Landscapes
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Description
Verfahren zur Herstellung eines Aufhellungsmittels für proteinische Fasern. Gegenstand vorliegenden Patentes ist ein Verfahren zur Verstellung eines Aufliellungs- mittels für proteinisehe Fasern.
Das Verfah ren ist. dadurch g,ekennzeiehnet, dass man 1 Mol 4-Nitro-4'-amino-stillien-2,2'-disulfon- sä ure, 1 Mol Cy annxlialogenid, 1 Hol einer den Phenplessigsäure-Rest abgebenden Ver bindung und 2 Mol Ammoniak unter Reduk tion der Nitrogruppe zur Aminogruppe der art aufeinander einwirken lässt,
dass ein St.il- benderivat der Formel
EMI0001.0023
entsteht. Die erhaltene neue Verbindung ist ein sehwach gelbstiehiges Pulver, welches in Was ser gut löslich ist. -Lind aus saurem oder neu tralem Bade zum Aufhellen von Wolle und Seide geeignet ist.
Beispiel: <B>18,5</B> Teile C'canurchlurid werden bei 0 bis 40 mit einer wässerigen Lösung von 48,8 Tei len 4-Ainino-4'-phenvlaeetylamino-stilbeii 2,2'- disnlfonsüure, erlia.hen aus 4-Nilro-4'-amiilo- stilben-2,2'-distilforisäure durch Aevlieren mit Phenylessigsäure und Reduktion nach Be- ehamp, kondensiert.
Die weitere Einsetzung erfolgt erst bei 20 bis 220, dann bei 90 bis 950 mit 28 Teilen 250loigem Ammoniak. Nach dem Isolieren und einer Reinigung stellt die erhal tene Verbindung in getrocknetem Zustande ein seliwaeli gelbliches Pulver dar, welches zum Aufhellen von Wolle und Seide geeignet ist.
Diese Verbindung lässt sieh aueli. wie folgt erhalten: Man setzt unter den obigen. Bedin gungen Cpanureliloricl mit 4-Nitro-4'-amino- stilben-2, 2'-disulfonsäure, dann mit Ammo niak um, reduziert mit Eisen und Salzsäure nach dem Verfahren von Beehamp und aey- liert. das Reduktionsprodukt mit Plienylessig- säure.
Process for the preparation of a whitening agent for proteinaceous fibers. The subject of the present patent is a method for adjusting a luffing means for proteinaceous fibers.
The procedure is ren. characterized g, ekennzeiehnet that 1 mol of 4-nitro-4'-amino-stillien-2,2'-disulphonic acid, 1 mol of cyanogenide, 1 ha of a compound releasing the phenolic acid residue and 2 mol of ammonia are included Reduction of the nitro group to the amino group can act on each other
that a syllable derivative of the formula
EMI0001.0023
arises. The new compound obtained is a very weak, yellowish powder which is readily soluble in water. -Lind made from acidic or neutral bath is suitable for lightening wool and silk.
Example: <B> 18.5 </B> parts of C'canur acid are at 0 to 40 with an aqueous solution of 48.8 parts of 4-amino-4'-phenylamino-stilbeii 2,2'-disinfonic acid, erlia. hen from 4-nilro-4'-amiilostilbene-2,2'-distilforic acid by evolving with phenylacetic acid and reduction according to Beehamp, condensed.
The further use takes place first at 20 to 220, then at 90 to 950 with 28 parts of 250% ammonia. After isolating and cleaning, the compound obtained, when dry, is a yellowish powder which is suitable for lightening wool and silk.
This connection lets see aueli. obtained as follows: One sets under the above. Conditions Cpanureliloricl with 4-nitro-4'-amino-stilbene-2, 2'-disulfonic acid, then with ammonia, reduced with iron and hydrochloric acid according to the method of Beehamp and aeyelated. the reduction product with plienyl acetic acid.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH269483T | 1948-06-04 | ||
CH272754T | 1948-06-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH272754A true CH272754A (en) | 1950-12-31 |
Family
ID=25731088
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH272754D CH272754A (en) | 1948-06-04 | 1948-06-04 | Process for the preparation of a whitening agent for proteinaceous fibers. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH272754A (en) |
-
1948
- 1948-06-04 CH CH272754D patent/CH272754A/en unknown
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