US1078925A - Black mordant monoazo dyestuff. - Google Patents

Black mordant monoazo dyestuff. Download PDF

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Publication number
US1078925A
US1078925A US73526212A US1912735262A US1078925A US 1078925 A US1078925 A US 1078925A US 73526212 A US73526212 A US 73526212A US 1912735262 A US1912735262 A US 1912735262A US 1078925 A US1078925 A US 1078925A
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United States
Prior art keywords
mordant
acid
black
monoazo dyestuff
monoazo
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Expired - Lifetime
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US73526212A
Inventor
Myrtil Kahn
Anton Ossenbeck
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Bayer AG
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Farbenfabriken Vorm Friedr Bayer and Co
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Priority to US73526212A priority Critical patent/US1078925A/en
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    • 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
    • C09B29/00—Monoazo dyes prepared by diazotising and coupling
    • C09B29/24—Monoazo dyes prepared by diazotising and coupling from coupling components containing both hydroxyl and amino directing groups
    • C09B29/28—Amino naphthols
    • C09B29/30—Amino naphtholsulfonic acid

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
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Description

UNITED STATES PATENT OFFICE.
MYRTIL KAHN AND ANTON OSSENBECK, OF ELBERFELD, GERMANY, ASSIGNORS T0 FARBENFABRIKEN VORM. FBIEDR. BAYER, & (70., OF ELBERFELD, GERMANY, A
CORPORATION OF GERMANY.
BLACK MORDANT MONOAZO DYESTUFF.
No Drawing.
To all whom it may concern:
Be it known that we, MYn'rrL KAHN and ANTON OSSENBECK, citizens of the German Empire, residing at Elberfeld, Germany, have invented new and useful Improvements in Black Mordant Monoazo Dyestuil's, of which the following is a specification.
We have found that new and valuable mordant monoazo dyestuffs are obtained by combining diazo compounds of ortho-aminophenol-sulfonic acids with acidyl-1-amino-7- .ortho-aminophenol-sulfonic acid and 1.9-
diamino- 't-naphthol.
In order to illustrate the new process more fully the following example is given, the parts being by weight:22.4 parts of 4- chloro-2-aminophenol-6sulfonic acid are diazotized with 7 parts of sodium nitrite. The diazo compound is then added to a solution containing an excess of sodium carbonate of 21 parts of acetyl-1-amino7- naphthol in the calculated quantity of dilute caustic soda lye. The production of the dyestufi is soon finished. It is filtered ofl', pressed andl dried. It has most probably the formu 9.:
Specification of Letters Patent.
Patented Nov. 18, 1913.
Application filed December 6, 1912, Serial No. 735,262.
powder soluble in hot water with a violet coloration. It dyes wool from an acid bath in violet shades which on being chromed change into a blue-black fast to light and falling. Upon treatment with stannous chlorid and hydrochloric acid it is split up into 2-amino-lphenol-4-chloro-6-sulfonic acid and 1.8-diamino-7-naphth0l. Q-aminophenol-l-snlfonic acid itself or other derivatives of this acid 6. g. ortho-amino-paracresol-sulfonic acid or 6-chl0ro-2-aminophenol-4-s11lfonic acid maybe used. Other acidyl-1amino-7-naphthols such as the benzoyl compound may be used.
We claim 1. The herein described new mordant mono-azo dyestuffs of the following graphically represented structure R-N:N-R' where R is the radical of an ortho-phenob sulfonic acid and R the radical of an acidyll-amino-T-naphthol, which are after being 70 dried and pulverized in the shape of their alkaline salts dark powders soluble in hot water generally with a violet coloration; yielding upon reduction with stannous chlorid and hydrochloric acid a Q-aminohenolsulfonic acid and LB-diaminO-T- naphthol; dyeing wool in violet shades which after being chromed change into fast bluishblack to greenish-black shades an dyeing wool in one bath in the presence of 30 a chrome mordant, substantially as described.
2. The herein described new 2120 dyestufi having most probably the formula:
coca. 8 5
. OH H with stannous chlorid and'h yrh'ochloric acid setour hands in the presence of two sub- 2-amino-l-phenol-4-chl0r0-6-su1f0nic acid scribing Witnesses. and 1.8:diamin0-7-naphth0l; dyeing wool in MYRTIL KAI-IN.
L. s.] violet shades Which after being chromed ANTON OSSENBECK. [1,. 5.] 5 change into a blueblack fast to light and Witnesses:
fuliing, substantially as described. HELEN NUFER,
1n testimony whereof We have hereunto ALBERT NUFER.
US73526212A 1912-12-06 1912-12-06 Black mordant monoazo dyestuff. Expired - Lifetime US1078925A (en)

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US73526212A US1078925A (en) 1912-12-06 1912-12-06 Black mordant monoazo dyestuff.

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2459813A (en) * 1945-11-14 1949-01-25 Gen Aniline & Film Corp Monoazo chromium complex
US2499133A (en) * 1945-12-18 1950-02-28 Allied Chem & Dye Corp Monazo dyestuff
US2598661A (en) * 1950-06-08 1952-06-03 Gen Aniline & Film Corp Monoazo dyestuffs
US2720517A (en) * 1952-02-05 1955-10-11 Sandoz Ag Process for the manufacture of metallizable monoazo dyestuffs

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2459813A (en) * 1945-11-14 1949-01-25 Gen Aniline & Film Corp Monoazo chromium complex
US2499133A (en) * 1945-12-18 1950-02-28 Allied Chem & Dye Corp Monazo dyestuff
US2598661A (en) * 1950-06-08 1952-06-03 Gen Aniline & Film Corp Monoazo dyestuffs
US2720517A (en) * 1952-02-05 1955-10-11 Sandoz Ag Process for the manufacture of metallizable monoazo dyestuffs

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