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RO86765B1 - Procedeu de obtinere a colorantului trisazoic albastru direct c.i.34.140 - Google Patents

Procedeu de obtinere a colorantului trisazoic albastru direct c.i.34.140

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Publication number
RO86765B1
RO86765B1 RO110936A RO11093683A RO86765B1 RO 86765 B1 RO86765 B1 RO 86765B1 RO 110936 A RO110936 A RO 110936A RO 11093683 A RO11093683 A RO 11093683A RO 86765 B1 RO86765 B1 RO 86765B1
Authority
RO
Romania
Prior art keywords
dye
triazoic
obtaining
blue
disazoic
Prior art date
Application number
RO110936A
Other languages
English (en)
Other versions
RO86765A3 (ro
Inventor
Ioan Prejmereanu
Dumitru Anghel
Original Assignee
îNTREPRINDEREA DE MEDICAMENTE SI COLORANTI "SINTOFARM"
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 îNTREPRINDEREA DE MEDICAMENTE SI COLORANTI "SINTOFARM" filed Critical îNTREPRINDEREA DE MEDICAMENTE SI COLORANTI "SINTOFARM"
Priority to RO110936A priority Critical patent/RO86765B1/ro
Publication of RO86765A3 publication Critical patent/RO86765A3/ro
Publication of RO86765B1 publication Critical patent/RO86765B1/ro

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Abstract

Inventia se refera la un procedeu de obtinere a colorantului trisazoic albastru direct C.I.34.140 prin diazotarea unui colorant disazoic cu formula: (vezi formula) si cuplarea în mediu alcalin cu acid 2-amino-5-naftol-silfonic, în care, în scopul evitarii purificarii colorantului disazoic si a pericolului de descompunere a diazo-derivatului prin diluare excesiva se realizeaza o precipitare finala a colorantului de 3,2% cu un adaus de 10% clorura de sodiu fata de volumul solutiei de precipitat, la o temperatura de 30 degree C.
RO110936A 1983-05-13 1983-05-13 Procedeu de obtinere a colorantului trisazoic albastru direct c.i.34.140 RO86765B1 (ro)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RO110936A RO86765B1 (ro) 1983-05-13 1983-05-13 Procedeu de obtinere a colorantului trisazoic albastru direct c.i.34.140

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RO110936A RO86765B1 (ro) 1983-05-13 1983-05-13 Procedeu de obtinere a colorantului trisazoic albastru direct c.i.34.140

Publications (2)

Publication Number Publication Date
RO86765A3 RO86765A3 (ro) 1985-04-17
RO86765B1 true RO86765B1 (ro) 1985-05-01

Family

ID=20113071

Family Applications (1)

Application Number Title Priority Date Filing Date
RO110936A RO86765B1 (ro) 1983-05-13 1983-05-13 Procedeu de obtinere a colorantului trisazoic albastru direct c.i.34.140

Country Status (1)

Country Link
RO (1) RO86765B1 (ro)

Also Published As

Publication number Publication date
RO86765A3 (ro) 1985-04-17

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