Borontetrafluoride salts of basic oxazine dyes

Details Borontetrafluoride salts of basic oxazine dyes Borontetrafluoride salts of basic oxazine dyes

1981-12-14

1983-01-04

Ramsuer, Robert W.

Organic compounds -- part of the class 532-570 series

Organic compounds

Chalcogen in the nitrogen containing substituent

C07D26538

Patent

active

043673341

ABSTRACT:
The invention relates to dye salts of the formula ##STR1## wherein R.sub.1 and R.sub.4 are hydrogen or alkyl, R.sub.2 and R.sub.3 are hydrogen, alkyl, aralkyl or aryl, and Y and Z are hydrogen, halogen, alkyl, alkoxy or aryloxy. These dye salts are most suitable for spin-dyeing acrylonitrile. Pure blue transparent fibres having excellent fastness properties are obtained.

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