Pretreatment is a sequence
Cotton Textile-Knit/Woven Processing Chemicals cover enzyme desize, APEO-free scour and wetting (including substitutes for historical nonyl phenol 9.5 mole wetters), low-foam jet and continuous-range detergents, demineralisers with iron chelation, anticrease polymers, peroxide stabilisers and killers, and core-alkali neutralisers. Residual peroxide and residual alkali are the two silent causes of unlevel reactive dyeing.
A scour that works on a jigger may flood a jet. Always state machine type, liquor ratio and whether the fabric is knit, woven, terry, cheese or garment. Lycra blends and turquoise shades need the dedicated anionic wetters called out in the cotton list.
Dye-house and finish
Dye-bath conditioners, levellers, lubricants, non-foaming soapers and non-formaldehyde dye-fixers sit after bleach. Finish then splits: cold-water or hot-water cationic flakes, AEEA-free cationics for restricted residuals, amino-silicone micro-emulsions for bounce, PE emulsion and wax for sewability. Whites need non-yellowing grades trialled on the actual optical brightener.
Share APEO and formaldehyde limits on the first enquiry. Dyna Glycols can map desize through softener as one sample set so foam and ionic clashes from mixed sources are avoided.
Specification checklist
Put the application, the substrate, temperature, pH and any APEO or formaldehyde limit on the first enquiry. INCI or chemical names, cloud point, hydroxyl value, saponification value and colour are the numbers Dyna Glycols can lock on a TDS for this Textiles topic. A warehouse nickname is not a specification.
Samples and documents
Request a laboratory sample of the related Textiles grade together with the current SDS and TDS. The certificate of analysis is issued for the shipping lot after manufacture at Kandla SEZ. Once the trial is approved, freeze the identity tests so later drums of this chemistry match the article you evaluated.
How to brief Cotton knit and woven processing auxiliaries
Use this article as a buying brief, not as a substitute for a TDS. Name the fibre, hide, oil phase or process step, the temperature and pH, and any limit on APEO or formaldehyde. Dyna Glycols will map that onto a catalogue grade in the Textiles range or quote a custom batch. INCI names, chemical names, cloud point, hydroxyl value and saponification value are more useful than a warehouse nickname.
If you already run a plant recipe, send the identity tests your receiving laboratory uses. Matching those numbers on a first sample of the chemistry behind “Cotton knit and woven processing auxiliaries” is faster than rewriting the formula around a different family.