US2666757A - Azo dyes for cellulosic fibers - Google Patents

Azo dyes for cellulosic fibers Download PDF

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Publication number
US2666757A
US2666757A US170950A US17095050A US2666757A US 2666757 A US2666757 A US 2666757A US 170950 A US170950 A US 170950A US 17095050 A US17095050 A US 17095050A US 2666757 A US2666757 A US 2666757A
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United States
Prior art keywords
cellulosic fibers
dyes
naphthylamine
anisidine
azo dyes
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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.)
Expired - Lifetime
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US170950A
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English (en)
Inventor
Richter Ludwig
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GAF Chemicals Corp
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General Aniline and Film Corp
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Publication date
Priority to CA528484A priority Critical patent/CA528484A/en
Priority to IT491804D priority patent/IT491804A/it
Application filed by General Aniline and Film Corp filed Critical General Aniline and Film Corp
Priority to US170950A priority patent/US2666757A/en
Application granted granted Critical
Publication of US2666757A publication Critical patent/US2666757A/en
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Classifications

    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09BORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B43/00Preparation of azo dyes from other azo compounds
    • C09B43/12Preparation of azo dyes from other azo compounds by acylation of amino groups
    • C09B43/136Preparation of azo dyes from other azo compounds by acylation of amino groups with polyfunctional acylating agents
    • C09B43/14Preparation of azo dyes from other azo compounds by acylation of amino groups with polyfunctional acylating agents with phosgene or thiophosgene

Definitions

  • the present invention relates to azo dyes for cellulosic fibers obtained by diazotizing a Z-naphthylamine disulfonic acid, coupling the same with S-methyl-O-anisidine, and phosgenating the resulting azo dyestuff.
  • the dyes yield tan or mustard shades instead of shades of orange.
  • the urea derivatives from l-naphthylamine disulfonic acids and o-anisidine are obtained in no appreciable yields. If the o-anisidine be replaced by -methyl-o-anisidine, either inappre- For instance, fabricsmade from fibers I 4 Claims. (01. 260-175) ciable yields of the dyeare obtained or the dyes produce tan or mustard shades in lieu of a pleasant orange shade.
  • I v The urea derivatives from 2-naphthylaminedisulfoni'c' acids and 'o-anisidine give low yields as well as undesired shades.
  • urea anisidine dye cotton andregenen ated cellulose bright orange-yellow to orange. shades distinguished by good dischargeability.
  • RN N NH 1. l; OH... I in which R. is 4,8-disulfonaphthy fonaphthylene or 5,7-disulfonaphthylene, the naphthylene radical being linked to the azo bridge in the 2-position. 7
  • R. is 4,8-disulfonaphthy fonaphthylene or 5,7-disulfonaphthylene, the naphthylene radical being linked to the azo bridge in the 2-position. 7
  • These products are prepared by diazotizing the desired 2-naphthylamine disulfonic acid and coupling it in acid solution with a molecular proportion of fi-methyl-o-anisidine.
  • the resulting monazo dye is transformed into the urea by reacting it with phosgene at a temperature ranging from about 20 to C. in a solution with a pH from slightly acid to slightly alkaline.
  • Example I 22 grams of 2-naphthylamine-4,8-disulfonic acid are dissolved at room temperature in 250' ml. of water to neutral reaction with about 25 m1. of sodium hydroxide solution (40% weight by volume). To this solution. are added 10.5
  • derivf atives of azo dyestuffs possessing all of the above prerequisites may be obtain'ed 'by phosgenating the ewe dyestuffs resulting from the diaZotiZa-J. tion of 2 naphthy1amine-4,8-disulfonic acid,-F2-" eiie. a isiii ml. of hydrochloric acid (23 B.). This solution is run while stirring into a mixture of 250 m1. of water, ice, 5 grams of sodium nitrite and 5 m1. of hydrochloric acid (23 B.). 10.4 grams of 5- methyl-o-anisidine are dissolved in a solution of 60 ml.
  • Phosgene is run into the reaction mixture at a temperature between 20 and zfififlnrwhile maintaining the pH of the mixture between 'I -and 8 by adding about 200 ml. of sodium hydroxide solution (40% weight by volume). The product .is salted out and isolated by filtration. The weight of the dry dye is 45 grams. The dye dves cotton and viscose rayon a bright orangefthe dyeings being very fast to light and having the ability to leave :estron effects completely unstained.
  • Example II action "to estronefiects are similar to :the dye of Example I.
  • ExampleIII The procedure'is the same as in Example I excepting that the 2-naphthylamine- 4g8-disulioni'c acid is replaced by an identical amount of '2- naphthylamine-6,8-disulfonic acid. After isolation-and drying, the yield is 37.9 grams. The material dyes cotton and viscose rayon somewhat redder-than the .dye of Example I.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
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US170950A 1950-06-28 1950-06-28 Azo dyes for cellulosic fibers Expired - Lifetime US2666757A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CA528484A CA528484A (en) 1950-06-28 Azo dyes for cellulosic fibers
IT491804D IT491804A (enrdf_load_stackoverflow) 1950-06-28
US170950A US2666757A (en) 1950-06-28 1950-06-28 Azo dyes for cellulosic fibers

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US170950A US2666757A (en) 1950-06-28 1950-06-28 Azo dyes for cellulosic fibers

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US2666757A true US2666757A (en) 1954-01-19

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CA (1) CA528484A (enrdf_load_stackoverflow)
IT (1) IT491804A (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2936305A (en) * 1956-11-29 1960-05-10 Sandoz Ag Water-insoluble disazo dyestuffs
US3621008A (en) * 1968-10-03 1971-11-16 Du Pont Direct disazo and tetraazo urea dyes and method of preparation
US3643269A (en) * 1967-10-25 1972-02-22 Sandor Ltd Dyeing synthetic polyamide fibers with disulfonated diaryl bis axo carbonilides
FR2124463A2 (enrdf_load_stackoverflow) * 1971-02-05 1972-09-22 Sandoz Sa

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US935018A (en) * 1909-05-04 1909-09-28 Farbenfab Vorm Bayer F & Co Azo dye.
CH49515A (de) * 1909-05-07 1911-03-01 Farbenfab Vorm Bayer F & Co Verfahren zur Darstellung eines orangen Baumwollfarbstoffes
GB191021202A (en) * 1910-09-12 1911-07-20 Philip Arthur Newton Manufacture and Production of New Azodyestuffs.
US999944A (en) * 1911-04-25 1911-08-08 Farbenfab Vorm Bayer F & Co Yellow disazo dye.
US1538934A (en) * 1924-04-28 1925-05-26 Nat Aniline & Chem Co Inc Disazo dyes containing a diphenylurea nucleus

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US935018A (en) * 1909-05-04 1909-09-28 Farbenfab Vorm Bayer F & Co Azo dye.
CH49515A (de) * 1909-05-07 1911-03-01 Farbenfab Vorm Bayer F & Co Verfahren zur Darstellung eines orangen Baumwollfarbstoffes
GB191021202A (en) * 1910-09-12 1911-07-20 Philip Arthur Newton Manufacture and Production of New Azodyestuffs.
US999944A (en) * 1911-04-25 1911-08-08 Farbenfab Vorm Bayer F & Co Yellow disazo dye.
US1538934A (en) * 1924-04-28 1925-05-26 Nat Aniline & Chem Co Inc Disazo dyes containing a diphenylurea nucleus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2936305A (en) * 1956-11-29 1960-05-10 Sandoz Ag Water-insoluble disazo dyestuffs
US3643269A (en) * 1967-10-25 1972-02-22 Sandor Ltd Dyeing synthetic polyamide fibers with disulfonated diaryl bis axo carbonilides
US3621008A (en) * 1968-10-03 1971-11-16 Du Pont Direct disazo and tetraazo urea dyes and method of preparation
FR2124463A2 (enrdf_load_stackoverflow) * 1971-02-05 1972-09-22 Sandoz Sa

Also Published As

Publication number Publication date
CA528484A (en) 1956-07-31
IT491804A (enrdf_load_stackoverflow)

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