Process for the dyeing of shaped articles made of polyacrylonitrile
Abstract
Abstract WHEREIN X, Y, AND Z, INDEPENDENTLY OF ONE ANOTHER ARE OPTIONALLY SUBSTITUTED ALKYL, ARALKYL, ALKOXY, AROXY AND/OR ARALKOXY RADICALS AND TWO OF THE SUSTITUENTS X, Y AND Z MAY ALSO FORM A HETEROCYCLIC FIVE- OR SIX-MEMBERED RING WITH THE PHOSPHOROUS ATOM. O=P(-X)(-Y)-Z R4 IS HYDROGEN, CH3- OR -CH2CH2CN; AND WHEREIN TWO OF THE RADICALS R2, R2 OR R3 MAY BE COMBINED TO FORM A CYCLOALKYL RING WITH THE PROVISO THAT AT LEAST ONE OF THE RADICALS R1, R2, OR R3 IS AN ELECTRON-ATTRACTING GROUP; AND IS FOLLOWED BY THERMAL AFTERTREATMENT. THE PROCESS CAN ALSO BE CARRIED OUT IN THE PRESENCE OF PHOSPHOROUS COMPOUNDS OF THE FORMULA -CH2-CH(-R4)-CN WHEREIN R1, R2 AND R3 INDEPENDENTLY OF ONE ANOTHER ARE HYDROGEN, ELECTRON-ATTRACTING GROUPS, ALKYL, CYCLOALKYL, ARYL, OR R1-C(-R2)(-R3)-CH2-CH(-R4)-CN PROCESS FOR DYEING POLYACRYLONITRILE CONTAINING MATERIALS WITH BASIC DYESTUFFS WHEREIN THE DYEING IS CARRIED OUT IN THE PRESENCE OF COMPOUNDS OF THE FORMULA
Inventors
- 👤 Joachim Schneider
- 👤 Werner Langmann
- 👤 Hans Rudolph
Bibliographic Details
Claims Analysis
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