Product Overview
Pretreatment auxiliaries are specialized chemical formulations engineered for textile wet processing. Applied during desizing, scouring, and bleaching, these formulations remove natural impurities, sizes, and oils from raw fibers. Proper auxiliary selection ensures uniform absorbency according to ISO 5639 / AATCC Test Method 79, removes hydrophobic barriers, and stabilizes bleaching baths, establishing the critical chemical foundation required for reproducible dyeing and printing.
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![Scouring Agent]()
Scouring AgentHonewash® WD-071Cview more
● Excellent cost-performance ratio.
● Scouring Agent has extremely excellent low-foaming property, as well as excellent wetting and penetration effects.
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![Penetrating Agent]()
Penetrating AgentHonewash® DX-LF1view more
● 100% active content.
● Penetrating Agent is easily soluble in cold water.
● Excellent penetration and wetting properties.
● Can effectively remove pectin... -
![Anti-wrinkle Softener]()
Anti-wrinkle SoftenerHonesoft® DX-1037 CONC.view more
●Anti-wrinkle Softener is suitable for anti-wrinkle finish of cotton and its blend.
●Can effectively reduce the friction marks, wrinkles, chicken foot marks and... -
![Sequestering Agent]()
Sequestering AgentHonesoft® DX-5370view more
● Sequestering Agent is suitable for wrinkle-resistant finishing in pretreatment, dyeing, and post-treatment (soaping) of cellulose and chemical fiber fabrics.
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Key Features
High Wetting Efficiency:
Rapidly reduces surface tension to accelerate liquor penetration into dense yarns and tight woven structures (Sink time < 5 seconds per AATCC 79).
Emulsification & Dispersion:
Breaks down and suspends hydrophobic cotton seed coats, waxes, and synthetic spin finishes, preventing redeposition on the fabric surface.
Alkali & Peroxide Stability:
Maintained performance in high-concentration sodium hydroxide solutions up to 50 g/L NaOH and hydrogen peroxide bleaching baths without catalytic decomposition.
Controlled Foaming:
Formulated with low-foam surfactants compatible with high-turbulence jet dyeing and continuous pad-steam machinery.
Scouring & Penetrating Agents: Alkylphenol ethoxylate (APEO)-free alcohol ethoxylate blends designed for continuous cotton preparation and alkaline scouring.
Desizing Enzymes: Heat-stable alpha-amylases targeted at rapid removal of starch-based warp sizes at 80 to 100 °C and optimal pH 5.5 to 7.0.
Peroxide Stabilizers: Organic-inorganic silicate-free complexes preventing catastrophic fiber degradation and pinholes during high-temperature peroxide bleaching.
Chelating & Sequestring Agents: Aminocarboxylate and phosphonate-based formulas binding heavy metal ions (Fe2+, Ca2+, Mg2+) to prevent catalytic damage to hydrogen peroxide.
Suitable Fibres & Applications
Cellulosic Fibres (Cotton, Linen, Rayon):
Alkaline scouring, enzymatic desizing, and oxidative bleaching.
Synthetic Fibres (Polyester, Nylon):
Removal of knitting oils, spin finishes, and oligomer control.
Blended Fabrics (Cotton/Polyester, Cotton/Spandex):
Simultaneous removal of sizing agents and oils while preserving spandex elasticity against active chlorine and high alkali.
Application & Process Considerations
Concentration Control: Standard application rates range from 1.0 g/L to 4.0 g/L depending on the impurity load and sizing add-on of the grey fabric.
Temperature Profile: Optimum activity for enzymatic formulations occurs between 60 °C and 90 °C; surfactant-based penetrants remain stable up to 130 °C in pressure beam or jet machines.
Water Hardness Compatibility: Formulations tolerate up to 20 °dH without precipitating insoluble salts onto textile substrates.
Compatibility: Non-ionic and anionic blends are mutually compatible; cationic softeners must not be introduced into the pretreatment bath.
Troubleshooting High-Stretch Elastane Blends: When processing cotton/spandex knits, maintain bath pH strictly below 10.5 during alkaline scouring to prevent elastane backbone degradation and yellowing.
Manufacturing & Quality Control
Synthesis Process: Exothermic and condensation reactions executed in glass-lined and 316L stainless steel jacketed reactors with variable-speed anchor agitation.
Viscosity & Density Verification: Every production batch is tested via rotational viscometer (25 °C) and digital densimeter to maintain strict specific gravity tolerances (±0.02 g/cm3).
Active Content Analysis: Non-volatile matter and solids content quantified through gravimetric oven-drying methods.
Application Simulation Testing: Laboratory pad-batch and exhaust trials run on standardized greige cotton fabric to measure capillary water absorption and whiteness index (ISO 105-J02) prior to cargo release.
Standard Packaging: 200 kg high-density polyethylene (HDPE) drums, 1,000 kg IBC totes, and bulk tanker deliveries.
Storage Stability: Stable for 12 months stored in tightly sealed containers between 5 °C and 35 °C away from direct sunlight.
Regulatory Compliance: REACH registered, GHS-compliant safety data sheets (SDS), and OEKO-TEX Eco Passport compliant formulations free of restricted hazardous substances (APEO-free, formaldehyde-free, compliant with ZDHC MRSL Level 3).
FAQ
As one of the leading pretreatment auxiliaries manufacturers and suppliers in China, we offer a wide range of products with superior quality for industrial. Please rest assured to buy bulk pretreatment auxiliaries made in China here from our factory. Contact us for more details.
Scouring and bleaching agent, pretreatment auxiliaries, Pretreatment or Dyeing one bath anti wrinkle agent
