DE233272C - - Google Patents
Info
- Publication number
- DE233272C DE233272C DENDAT233272D DE233272DA DE233272C DE 233272 C DE233272 C DE 233272C DE NDAT233272 D DENDAT233272 D DE NDAT233272D DE 233272D A DE233272D A DE 233272DA DE 233272 C DE233272 C DE 233272C
- Authority
- DE
- Germany
- Prior art keywords
- iron
- alkali
- class
- iron powder
- indigo
- 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.)
- Active
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 15
- 229910052742 iron Inorganic materials 0.000 claims description 7
- 239000000843 powder Substances 0.000 claims description 4
- 230000001603 reducing Effects 0.000 claims description 4
- 238000006722 reduction reaction Methods 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 2
- 150000007513 acids Chemical class 0.000 claims 1
- 239000003513 alkali Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- VIFKLIUAPGUEBV-UHFFFAOYSA-N 2-(3-hydroxy-1H-indol-2-yl)-1H-indol-3-ol Chemical compound N1C2=CC=CC=C2C(O)=C1C1=C(O)C2=CC=CC=C2N1 VIFKLIUAPGUEBV-UHFFFAOYSA-N 0.000 description 2
- VZGDMQKNWNREIO-UHFFFAOYSA-N Carbon tetrachloride Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 2
- 229940097275 Indigo Drugs 0.000 description 2
- 241001062009 Indigofera Species 0.000 description 2
- 235000000177 Indigofera tinctoria Nutrition 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000000975 dye Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 230000002378 acidificating Effects 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B67/00—Influencing the physical, e.g. the dyeing or printing properties of dyestuffs without chemical reactions, e.g. by treating with solvents grinding or grinding assistants, coating of pigments or dyes; Process features in the making of dyestuff preparations; Dyestuff preparations of a special physical nature, e.g. tablets, films
- C09B67/0071—Process features in the making of dyestuff preparations; Dehydrating agents; Dispersing agents; Dustfree compositions
- C09B67/0077—Preparations with possibly reduced vat, sulfur or indigo dyes
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
PATENTSCHRIFTPATENT LETTERING
KLASSE 12p. GRUPPECLASS 12p. GROUP
Zusatz zum Patente 165429 vom 30. Oktober 1904.*)Addendum to patent 165429 of October 30, 1904. *)
Patentiert im Deutschen Reiche vom 23. Juli 1909 ab. Längste Dauer: 29.Oktober 1919.Patented in the German Empire on July 23, 1909. Longest duration: October 29, 1919.
Durch Patent 165429, Kl. 8m, ist ein Verfahren zur Reduktion von Indigofarbstoffen geschützt, welches darin besteht, daß man auf Indigofarbstoffe Eisenpulver bei Gegenwart von Alkalilaugen, welche 10° Be. nicht wesentlich unterschreiten, einwirken läßt. In gleicher Weise verfährt man auch beim Verfahren des Zusatzpatents 171785, Kl. 8m, jedoch indem hier ein Teil des dort v.erwendeten Alkalis oder das gesamte Alkali durch Indigweißalkali oder durch Alkalicarbonate, Phosphate oder Sulfide entweder allein oder im Gemisch mit Indigweißalkali ersetzt wird.By patent 165429, cl. 8m, is a process for the reduction of indigo dyes protected, which consists in having iron powder in the presence of indigo dyes of alkaline solutions, which 10 ° Be. does not fall significantly below, allows it to act. In The same procedure is followed in the process of additional patent 171785, class 8m, however in that some of the alkali used there or all of the alkali by indigo white alkali or by alkali carbonates, Phosphates or sulfides either alone or in a mixture with indigo white alkali is replaced.
Es hat sich nun gezeigt, daß, wenn man in den genannten Verfahren als Eisenpulver ζ. B. gemahlene Gußspäne verwendet ·— welche selbstredend von etwaigen öligen Verunreinigungen vorerst zu befreien sind ■—·, die Ergebnisse der Reduktion unter scheinbar gleichen Umständen zuweilen ungleichförmig ausfallen, was man bei sauren Reduktionen nicht beobachtet. Dieser Übelstand wird vermieden, wenn man das anzuwendende Eisen — als solches können auch durch Wasserstoff ganz oder teilweise reduzierte technische Eisenrückstände dienen :— vor der Anwendung mit einer Säure behandelt.It has now been shown that if one uses the above-mentioned methods as iron powder ζ. B. ground cast chips used · - which of course from any oily impurities to be released for the time being ■ - ·, the results of the reduction under apparently the same Certain circumstances sometimes turn out to be non-uniform, which is not the case with acidic reductions observed. This inconvenience is avoided if one uses the iron - as technical iron residues that have been completely or partially reduced by hydrogen can also do this serve: - treated with an acid before use.
300 Teile feinst gemahlene Eisengußspäne, welche gegebenenfalls durch Behandeln mit Tetrachlorkohlenstoff von öl befreit sind, werden mit 1000 Teilen Wasser angerührt, und es wird nun so lange unter gutem Rühren Schwefelsäure von 20° Be. hinzufließen gelassen, bis eine stärkere Wasserstoffentwicklung eingetreten ist. Man läßt das Eisenpulver absitzen und reinigt durch wiederholtes Waschen. Die so erhaltene Eisenpaste wird alsdann im Verfahren des Pauptpatents 165429, Kl. 8 m, verwendet. 300 parts of finely ground iron castings, which can be treated with Carbon tetrachloride is freed from oil, are mixed with 1000 parts of water, and it is now sulfuric acid at 20 ° Be for so long with thorough stirring. allowed to flow in until a stronger evolution of hydrogen has occurred. The iron powder is allowed to settle and cleans by repeated washing. The iron paste thus obtained is then used in the process of the main patent 165429, class 8 m, used.
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE233272C true DE233272C (en) |
Family
ID=493225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT233272D Active DE233272C (en) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE233272C (en) |
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0
- DE DENDAT233272D patent/DE233272C/de active Active
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