RO96104B1 - Procedeu de obtinere a colorantului negru complex cr 1:1 acid 6-nitro-1-diazo-2-naftol-4-sulfonic-2-naftol - Google Patents

Procedeu de obtinere a colorantului negru complex cr 1:1 acid 6-nitro-1-diazo-2-naftol-4-sulfonic-2-naftol

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Publication number
RO96104B1
RO96104B1 RO124851A RO12485186A RO96104B1 RO 96104 B1 RO96104 B1 RO 96104B1 RO 124851 A RO124851 A RO 124851A RO 12485186 A RO12485186 A RO 12485186A RO 96104 B1 RO96104 B1 RO 96104B1
Authority
RO
Romania
Prior art keywords
naphtol
diazo
nitro
complex
sulphonic
Prior art date
Application number
RO124851A
Other languages
English (en)
Other versions
RO96104A2 (ro
Inventor
Leonard Stefan
Mandica Mangu
Ana-Rodica-Doina Dobrica
Liana Vladutiu
Silviu Ionita
Dionisie Dina
Mircea Rusu
Mariana Vladu
Original Assignee
Institutul De Cercetari Chimice
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Institutul De Cercetari Chimice filed Critical Institutul De Cercetari Chimice
Priority to RO124851A priority Critical patent/RO96104B1/ro
Publication of RO96104A2 publication Critical patent/RO96104A2/ro
Publication of RO96104B1 publication Critical patent/RO96104B1/ro

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Inventia se refera la un procedeu de obtinere a colorantului negru complex Cr 2 : 1 acid 6-nitro-1-diazo-2-naftol-4-sulfonic - 2-naftol în care colorantul obtinut în urma reactiei de cuplare efectuata în prezenta de eter-sulfat de nonilfenol etoxilat, în calitate de agent tensioactiv si de alcool 2-etilhexilic în calitate de agent antispumant, se complexeaza în acelasi mediu de reactie, fara separare, prin tratare cu o solutie apoasa a unei sari de Cr III sau de Cr VI în prezenta unui agent reducator, dupa care colorantul metalizat se izoleaza din masa de reactie la pH acid, cu NaCl.
RO124851A 1986-09-25 1986-09-25 Procedeu de obtinere a colorantului negru complex cr 1:1 acid 6-nitro-1-diazo-2-naftol-4-sulfonic-2-naftol RO96104B1 (ro)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RO124851A RO96104B1 (ro) 1986-09-25 1986-09-25 Procedeu de obtinere a colorantului negru complex cr 1:1 acid 6-nitro-1-diazo-2-naftol-4-sulfonic-2-naftol

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RO124851A RO96104B1 (ro) 1986-09-25 1986-09-25 Procedeu de obtinere a colorantului negru complex cr 1:1 acid 6-nitro-1-diazo-2-naftol-4-sulfonic-2-naftol

Publications (2)

Publication Number Publication Date
RO96104A2 RO96104A2 (ro) 1989-01-30
RO96104B1 true RO96104B1 (ro) 1989-02-02

Family

ID=20119859

Family Applications (1)

Application Number Title Priority Date Filing Date
RO124851A RO96104B1 (ro) 1986-09-25 1986-09-25 Procedeu de obtinere a colorantului negru complex cr 1:1 acid 6-nitro-1-diazo-2-naftol-4-sulfonic-2-naftol

Country Status (1)

Country Link
RO (1) RO96104B1 (ro)

Also Published As

Publication number Publication date
RO96104A2 (ro) 1989-01-30

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