ES452208A1 - Procedure for preparing soluble disazoic colorants in water. (Machine-translation by Google Translate, not legally binding) - Google Patents

Procedure for preparing soluble disazoic colorants in water. (Machine-translation by Google Translate, not legally binding)

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Publication number
ES452208A1
ES452208A1 ES76452208A ES452208A ES452208A1 ES 452208 A1 ES452208 A1 ES 452208A1 ES 76452208 A ES76452208 A ES 76452208A ES 452208 A ES452208 A ES 452208A ES 452208 A1 ES452208 A1 ES 452208A1
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ES
Spain
Prior art keywords
formula
translation
procedure
machine
legally binding
Prior art date
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
Application number
ES76452208A
Other languages
Spanish (es)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
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
Priority claimed from GB41251/76A external-priority patent/GB1557988A/en
Application filed by Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Publication of ES452208A1 publication Critical patent/ES452208A1/en
Expired legal-status Critical Current

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Abstract

Procedure for preparing water-soluble disazo dyes which, in the form of the free acid, have the general formula: **(See formula)** wherein the sulfonic acid group of ring A is in the meta or para position with respect to the azo group, R represents hydrogen or hydroxyl, R1 represents optionally substituted hydrogen, alkyl, aralkyl or aryl, R2 represents hydrogen or optionally substituted alkyl, R3 represents hydrogen, halogen, lower alkyl or lower alkoxy and R4 represents lower alkyl or aryl, characterized in that it comprises diazotizing a primary amine of the formula: **(See formula)** wherein the sulfonic acid group is in the meta or para position with respect to the amino group; coupling the diazo compound with an aminonaphthalenesulfonic acid of the formula: where R is defined as above; diazotize the aminomonoazo compound; and coupling with an amino group-containing coupling component of the formula: **(See formula)** wherein the radicals R1 to r4 are defined as above. (Machine-translation by Google Translate, not legally binding)
ES76452208A 1976-10-05 1976-10-08 Procedure for preparing soluble disazoic colorants in water. (Machine-translation by Google Translate, not legally binding) Expired ES452208A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB41251/76A GB1557988A (en) 1975-10-06 1976-10-05 Silicone compositions

Publications (1)

Publication Number Publication Date
ES452208A1 true ES452208A1 (en) 1977-11-01

Family

ID=10418842

Family Applications (1)

Application Number Title Priority Date Filing Date
ES76452208A Expired ES452208A1 (en) 1976-10-05 1976-10-08 Procedure for preparing soluble disazoic colorants in water. (Machine-translation by Google Translate, not legally binding)

Country Status (1)

Country Link
ES (1) ES452208A1 (en)

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