Dyeability of melt blend fibers with high electron affinity dyes

Abstract

Abstract FIBERS ARE PREPARED WHICH ARE COMPRISED OF 4-50 PARTS BY WEIGHT OF A SUBSTANTIALLY LINEAR FIBER-FORMING POLYESTER HAVING RECURRING CYCLIC STRUCTURE IN THE POLYMER BACKBONE DISPERSED IN A CONTINUOUS BODY OF 50-96 PARTS BY WEIGHT OF A LINEAR FIBER-FORMING POLYAMIDE, SAID FIBER HAVING AT LEAST 5,000 POLYESTER MICROFIBRILES PER 1,000 SQUARE MICRONS CROSS SECTION AND IS DYED WITH AN AZOR DISPERSED DYE HAVING A COLUBILITY OF LESS THAN 0.1 GRAM IN 100 CC. OF WATER AND WHICH HAS AN APPARENT ELECTRON AFFINITY OF GREATER THAN 3 ELECTRON VOLTS, SAID AZO DISPERSE DYEE HAVING ONE OR MORE ELECTRON ATTRACTING SUBSTITUENT MOIETIES, AND THERE MAY BE SIMULTANEOUSLY PRESENT ELECTRON REPELLING SUBSTITUENT MOIETIES, PROVIDED THE SUM OF THE CHARGES OF THE ELECTRON ATTRACTING MOIETIES ARE AT LEAST 0.5 ELECTRON BOLT GREATER THAN THE SUM OF THE ELECTRON REPELLING MOIETIES. THE FIBERS MAY BE BLENDED WITH OTHER FIBERS TO FORM FIBRICES HAVING NOVEL EFFECTS. A PROCESS OR PRODUCING SAID DYED POLYBLEND FIBERS OR FABRIC THEREFROM COMPRISING DYEING IN AN AQUEOUS MEDIUM AT A TEMPERATURE OF AT LEAST 150*F. AS THE SOLE FIBER IN THE TEXTILE ARTICLE OR IN COMBINATION WITH AT LEAST ONE OTHER FIBER SELECTED FROM THE GROUP CONSISTING OF POLYAMIDE, POLYESTER, POLYACRYLONITRILE, POLYPROPYLENE, COTTON, SILK AND WOOL, AND DYE BEING SOLELY AN AZO DISPERSE DYE HAVING AN ELECTRON AFFINITY OF AT LEAST 3.0 ELECTRON VOLTS AND ALTERNATELY THERE MAY BE SIMULTANEOUSLY PRESENT, FOR MULTICOLOR EFFECTS, ONE OR MORE DYES SELECTED FROM THE GROUP, ACID DYES, ACID METALLIZED DYES, DIRECT DYES, BASIC DYES, AND ANTHRAQUINONE DISPERSE DYES.

Inventors

• 👤 H Ortheil
• 👤 O Snider
• 👤 J Loughlin

Bibliographic Details