CH285352A - Process for the preparation of a whitening agent. - Google Patents
Process for the preparation of a whitening agent.Info
- Publication number
- CH285352A CH285352A CH285352DA CH285352A CH 285352 A CH285352 A CH 285352A CH 285352D A CH285352D A CH 285352DA CH 285352 A CH285352 A CH 285352A
- Authority
- CH
- Switzerland
- Prior art keywords
- whitening agent
- stilbene
- preparation
- methyl
- ethoxy
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 4
- 230000002087 whitening effect Effects 0.000 title claims description 3
- 238000002360 preparation method Methods 0.000 title description 2
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 3
- 229920003043 Cellulose fiber Polymers 0.000 claims description 2
- 125000003277 amino group Chemical group 0.000 claims description 2
- 230000008034 disappearance Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 6
- 239000002253 acid Substances 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- NSMMFSKPGXCMOE-UHFFFAOYSA-N 2-[2-(2-sulfophenyl)ethenyl]benzenesulfonic acid Chemical compound OS(=O)(=O)C1=CC=CC=C1C=CC1=CC=CC=C1S(O)(=O)=O NSMMFSKPGXCMOE-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- QXNVGIXVLWOKEQ-UHFFFAOYSA-N Disodium Chemical class [Na][Na] QXNVGIXVLWOKEQ-UHFFFAOYSA-N 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Herstellung eines Aufhellungsmittels. Gegenstand vorliegenden Patentes ist ein Verfahren zur Herstellung eines Aufhellungs- mittels, dadurch gekennzeichnet, dass man 4,4'- Dianiino-st.ilben-2,2'-clisulfonsäitre mit einem 2-Ätlioxy-4-inetliyl-benzoylhal.ogenid bis zum Verschwinden der Aminogruppen acyliert.
Das erhaltene neue Aufhellungsmittel, die 4,4' - D i- (2" - äthoxy - 4"-methyl-benzoylamino) - stilben-2,2'-disulfoiisäure, stellt ein schwach gelblich gefärbtes Pulver dar und besitzt gute Affinität. zur Cellulosefaser. <I>Beispiel:
</I> 37 Teile 4,4'-Dianiino-stilben-2,2'-disulfoli- säure werden unter Zusatz von<B>1,0,6</B> Teilen cale. Soda in 1000 Teilen Wasser gelöst und bei 0 bis 10 mit einer Lösung von 39,7 Teilen 2-Äthoxy-4-niethyl-benzoylchlorid in 150 Vo- lumteilen Benzol unter gutem Rühren versetzt.
und gleielizeitig die in Freiheit gesetzte Salz- säure mit la%iger Sololösung neutralisiert. Nach der Umsetzung wird das Benzol abdestil- liert und das erhaltene Dinatriumsalz der 4,4' - Di- (2"- äthoxy- 4"-methyl-benzoylamino) - stilben-2,2'-disulfonsäure durch Absaugen iso liert.
Das Produkt stellt nach dem Trocknen ein äelbliehes Pulver dar, welches in heissem Was ser löslich ist.
Process for the preparation of a whitening agent. The present patent is a process for the production of a lightening agent, characterized in that 4,4'-dianiino-st.ilbene-2,2'-clisulfonic acid with a 2-Ätlioxy-4-inetliyl-benzoylhal.ogenid to Disappearance of the amino groups acylated.
The new lightening agent obtained, 4,4'-D i- (2 "-ethoxy-4" -methyl-benzoylamino) -stilbene-2,2'-disulfoic acid, is a pale yellowish colored powder and has good affinity. to cellulose fiber. <I> example:
</I> 37 parts of 4,4'-dianiino-stilbene-2,2'-disulfolic acid with the addition of <B> 1.0.6 </B> parts of cale. Soda was dissolved in 1000 parts of water and, at 0 to 10, a solution of 39.7 parts of 2-ethoxy-4-diethylbenzoyl chloride in 150 parts by volume of benzene was added with thorough stirring.
and at the same time neutralize the released hydrochloric acid with la% solo solution. After the reaction, the benzene is distilled off and the resulting disodium salt of 4,4'-di- (2 "-ethoxy-4" -methylbenzoylamino) stilbene-2,2'-disulfonic acid is isolated by suction.
After drying, the product is an even powder which is soluble in hot water.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH285352T | 1949-05-27 | ||
| CH282055T | 1949-05-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH285352A true CH285352A (en) | 1952-08-31 |
Family
ID=25732132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH285352D CH285352A (en) | 1949-05-27 | 1949-05-27 | Process for the preparation of a whitening agent. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH285352A (en) |
-
1949
- 1949-05-27 CH CH285352D patent/CH285352A/en unknown
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