Orcolan Neutral Acid Dyes

Orcolan Neutral dyes for nylon and wool, are 2:1 premetallized dyes. Because of their large molecular size, these behave similarly to the Orco Milling  dyes in application and strike rate. Because of the metal complex (Cr+3 usually), these dyes exhibit excellent light and wet fastness and find application in automotive industrial fabrics.  Because of the rapid rate of exhaustion, these dyes should be applied from a neutral or slightly alkaline pH.   The use of an acid salt such as ammonium sulfate, with or without a buffer, is highly recommended.  The pH is gradually lowered later in the dyeing cycle by the use of glacial acetic acid.  These dyes are suitable not only for piece dyeing but also stock and package work.  This line is  generally used for earthtone or dark shades.  For bright shades, our line of Orcosets are recommended.   Although not actually included in this line, the Orcolan Fast Acid dyes which are a 1:1 metallized type should be mentioned only because they also contain Cr+3 and exhibit excellent fastness.  The acid metallized dyes differ from their neutral counter-parts in that they require strongly acidic conditions(pH of 2) to exhaust.  Care must be taken as this low pH could   cause some fiber damage to both nylon and wool. One advantage this type of dye does have is its ability to level very well.

 You can view and print the physical properties and/or Material Safety Data Sheets of these products via our free interactive DyeSelect™ CD-ROM program!

We also have three full-service laboratories available to our customers for computer shade-matching, textile processing procedure development, and technical problem-solving.  Our highly skilled laboratory professionals are also available for in-plant trial runs and problem solving.

Product Name

Color Index Name

Characteristics