CH251290A - Process for the preparation of a new bright acid dye of the anthraquinone series. - Google Patents
Process for the preparation of a new bright acid dye of the anthraquinone series.Info
- Publication number
- CH251290A CH251290A CH251290DA CH251290A CH 251290 A CH251290 A CH 251290A CH 251290D A CH251290D A CH 251290DA CH 251290 A CH251290 A CH 251290A
- Authority
- CH
- Switzerland
- Prior art keywords
- preparation
- acid dye
- anthraquinone series
- new bright
- amino
- Prior art date
Links
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Procédé de préparation d'un nouveau colorant acide brillant de la série anthraquinonique. Le présent brevet a pour objet un procédé de préparation d'un nouveau colorant acide de la série anthraquinonique, selon lequel an condense l'acide 1-amino-4-bromanthraqui- none-2,7-dis.ulfonique avec l'1-amino-3,4,5- triméthyl-cyclohexane.
Le colorant ainsi obtenu a pour formule
EMI0001.0011
et teint la laine et les fibres animales, les fibres artificielles à base de superpolyamides en ton bleu verdâtre vif.
Les teintures qu'il fournit sont égales, résistantes à la lumière et au lavage, et stables à la lumière artificielle.
Exemple: Les parties indiquées sont en poids.
On mélange 25 parties d'1-amino-4-brom- anthraquinone-2,7-disulfonate de potassium technique, 40 parties d'1-amino-3,4,5-trimé- thyl-cyclohexane, 6 parties de soude causti que 33%, 0,4 parties de poudre de cuivre, 40 parties d'alcool et 200 parties d'eau. On agite et chauffe à 55-65 en faisant passer un lent courant d'azote et en maintenant la même température jusqu'à ce que la masse en réaction soit devenue bleue. On sépare le colorant formé selon les méthodes connues.
Il se présente sous forme de poudre cristalline bleue, se dissolvant facilement dans l'eau en bleu verdâtre; sa solution dans SO.,Hz est incolore, mais vire au bleu rougeâtre intense par adjonction de p-formaldéhyde.
Les quantités d'amine, d'alcali, de cata lyseur, de diluant peuvent varier dans de larges limites. L'introduction du dérivé anthraquinonique peut se faire aussi par pe tites portions au cours de quelques heures.
Process for the preparation of a new bright acid dye of the anthraquinone series. The present patent relates to a process for the preparation of a novel acid dye of the anthraquinonic series, according to which an condenses 1-amino-4-bromanthraquinone-2,7-dis.ulfonic acid with 1- amino-3,4,5-trimethyl-cyclohexane.
The dye thus obtained has the formula
EMI0001.0011
and dyed wool and animal fibers, artificial fibers based on superpolyamides in a bright greenish blue tone.
The dyes it provides are even, lightfast and washfast, and stable to artificial light.
Example: Parts shown are by weight.
25 parts of technical potassium 1-amino-4-brom-anthraquinone-2,7-disulphonate, 40 parts of 1-amino-3,4,5-trimethyl-cyclohexane, 6 parts of caustic soda are mixed. as 33%, 0.4 parts of copper powder, 40 parts of alcohol and 200 parts of water. Stir and heat to 55-65 with a slow stream of nitrogen passing through and maintaining the same temperature until the reaction mass has turned blue. The dye formed is separated off according to known methods.
It comes in the form of a blue crystalline powder, easily dissolving in water in greenish blue; its solution in SO., Hz is colorless, but turns to intense reddish blue on addition of p-formaldehyde.
The amounts of amine, alkali, catalyst catalyst, diluent can vary within wide limits. The introduction of the anthraquinone derivative can also be done in small portions over the course of a few hours.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH246258T | 1944-10-19 | ||
CH251290T | 1944-10-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH251290A true CH251290A (en) | 1947-10-15 |
Family
ID=25729098
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH251290D CH251290A (en) | 1944-10-19 | 1944-10-19 | Process for the preparation of a new bright acid dye of the anthraquinone series. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH251290A (en) |
-
1944
- 1944-10-19 CH CH251290D patent/CH251290A/en unknown
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