GB389853A - Improvements in dyeing with azoic colours - Google Patents

Improvements in dyeing with azoic colours

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Publication number
GB389853A
GB389853A GB2673731A GB2673731A GB389853A GB 389853 A GB389853 A GB 389853A GB 2673731 A GB2673731 A GB 2673731A GB 2673731 A GB2673731 A GB 2673731A GB 389853 A GB389853 A GB 389853A
Authority
GB
United Kingdom
Prior art keywords
diazo
dimethoxyanilide
diaminodiphenylamine
padding
impregnating
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
GB2673731A
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.)
CHARLES LEONARD WALL
Bleachers Association Ltd
Original Assignee
CHARLES LEONARD WALL
Bleachers Association 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
Application filed by CHARLES LEONARD WALL, Bleachers Association Ltd filed Critical CHARLES LEONARD WALL
Priority to GB2673731A priority Critical patent/GB389853A/en
Publication of GB389853A publication Critical patent/GB389853A/en
Expired legal-status Critical Current

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Abstract

Azo dyes are made on the fibre by impregnating the material with a coupling component, padding in a diazo solution and then subjecting the material after it has passed the diazo bath to a rapid beating operation at a value substantially above atmospheric to develop the colour. The coupling is thereby accelerated and darker shades are obtained. In examples the following dyestuffs are produced by impregnating with the arylide of 2 : 3-oxynaphthoic acid, padding in a diazo solution and developing by passing over steam-heated drying tins: (1) 4-amino-4<1>-methoxydiphenylamine --> the anilide, (2) a -aminoanthraquinone --> the 2 : 5-dimethoxyanilide (zinc chloride double salt of the diazo compound used), (3) 4 : 4<1>-diaminodiphenylamine \sQ the 4-chloranilide, (4) 2 : 5-dichloraniline and 4 : 4<1>-diaminodiphenylamine (in admixture) --> the 2 : 5-dimethoxyanilide.
GB2673731A 1931-09-25 1931-09-25 Improvements in dyeing with azoic colours Expired GB389853A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2673731A GB389853A (en) 1931-09-25 1931-09-25 Improvements in dyeing with azoic colours

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2673731A GB389853A (en) 1931-09-25 1931-09-25 Improvements in dyeing with azoic colours

Publications (1)

Publication Number Publication Date
GB389853A true GB389853A (en) 1933-03-27

Family

ID=10248432

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2673731A Expired GB389853A (en) 1931-09-25 1931-09-25 Improvements in dyeing with azoic colours

Country Status (1)

Country Link
GB (1) GB389853A (en)

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