Borontetrafluoride salts of basic oxazine dyes
US4367334A · kind A · utility
6Cited by
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5Claims
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Assignee
Inventor
Key dates
| Filing date | Dec 14, 1981 |
| Grant date | Jan 4, 1983 |
| Priority date | — |
| Expiry date | Dec 14, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B69/06
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.