RO98452B1 - Procedeu de obtinere a unei solutii concentrate de colorant negru complex cr 2:1 - Google Patents

Procedeu de obtinere a unei solutii concentrate de colorant negru complex cr 2:1

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Publication number
RO98452B1
RO98452B1 RO128520A RO12852087A RO98452B1 RO 98452 B1 RO98452 B1 RO 98452B1 RO 128520 A RO128520 A RO 128520A RO 12852087 A RO12852087 A RO 12852087A RO 98452 B1 RO98452 B1 RO 98452B1
Authority
RO
Romania
Prior art keywords
dye
col
mol
complex
preparing
Prior art date
Application number
RO128520A
Other languages
English (en)
Inventor
Nicolae Popovici
Mandica Mangan
Marcela Maria Savu
Mircea Banica
Leonard Stefan
Valentina Dumitrache
Ileana Laurentiu
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 RO128520A priority Critical patent/RO98452B1/ro
Publication of RO98452B1 publication Critical patent/RO98452B1/ro

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

Abstract

Procedeul de obtinere a unei solutii concentrate de colorant negru complex Cr 2:1 se refera la prepararea colorantilor azoici 4-nitro-2-aminofenol-betanaftol (col.I) si 5-nitro-2-amino-fenol (col.II) într-un amestec de apa-solventi organici miscibili cu apa, în prezenta unei cantitati foarte mici de Efacril 23 (eter sulfat de nonifenol etoxilat) corespunzând formulei: R-C6H4-O-(CH2CH2O)nSO3Na în care R=C19H19; n=23, în mediu alcalin, si complexarea, în continuare, a suspensiei de coloranti obtinuta cu o sare de Cr3+, raportul reactantilor fiind 1,1 moli (col.I): 0,9 moli (col.II):1 mol sare de Cr2+. Solutia de colorant obtinuta din sinteza cu un continut de circa 8...10% colorant se filtreaza pentru clarificarea si separarea sarurilor rezultate din reactie si se foloseste la vopsirea pielii.
RO128520A 1987-06-08 1987-06-08 Procedeu de obtinere a unei solutii concentrate de colorant negru complex cr 2:1 RO98452B1 (ro)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RO128520A RO98452B1 (ro) 1987-06-08 1987-06-08 Procedeu de obtinere a unei solutii concentrate de colorant negru complex cr 2:1

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RO128520A RO98452B1 (ro) 1987-06-08 1987-06-08 Procedeu de obtinere a unei solutii concentrate de colorant negru complex cr 2:1

Publications (1)

Publication Number Publication Date
RO98452B1 true RO98452B1 (ro) 1990-02-28

Family

ID=40906552

Family Applications (1)

Application Number Title Priority Date Filing Date
RO128520A RO98452B1 (ro) 1987-06-08 1987-06-08 Procedeu de obtinere a unei solutii concentrate de colorant negru complex cr 2:1

Country Status (1)

Country Link
RO (1) RO98452B1 (ro)

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