1. Yellow to Red Methine Dyes Derived From 1,3-lndandione.
- Author
-
Irick, Jr., Gether and Straley, James M.
- Subjects
DYES & dyeing ,CARBYNES ,SYNTHETIC fibers ,CELLULOSE esters ,POLYESTER fibers ,COLORFASTNESS (Textiles) ,ORGANIC compounds ,TEXTILE chemical industry ,COLOR in the textile industries - Abstract
The excellent lightfastness of greenish-yellow methine dyes derived from malononitrile is widely recognized. The purpose of this work was to determine whether lightfast methine dyes could be obtained in shades other than yellow. This paper describes novel yellow to red methine dyes prepared by the action of N,N-disubstituted p-aminobenzaldehydes with 1,3-indandione. These dyes have absorption maxima at wavelengths between those of the malononitrile-based dyes and the tricyanovinyl dyes, but their extinction coefficients are greater than those of either dye. These dyes have excellent affinity for cellulose ester and polyester fibers and show fair to very good lightfastness in yellow to orange shades. [ABSTRACT FROM AUTHOR]
- Published
- 1969