Colloidal Antimony Pentoxide Flame Retardant for Preferred Replacement

High-Performance Colloidal Antimony Pentoxide Flame Retardant: UMCAP38 & UMCAP46 – Preferred Replacement

Against the backdrop of global flame retardant upgrading and stricter environmental standards, colloidal antimony pentoxide (CAP) has become a core flame retardant synergist for coatings, textiles, resins and synthetic fibers, thanks to its high efficiency, low impact and eco-friendliness.

UrbanMines Tech, a specialist in antimony-based advanced materials R&D and production, launches UMCAP38 (38% colloidal Sb₂O₅) and UMCAP46 (46% colloidal Sb₂O₅). These benchmark grades precisely match and fully replace NYACOL A1540 / A1550, delivering cost-effective, reliable flame retardant solutions worldwide.

Basic Product Properties: Nano-Colloidal, Consistent Quality

Both grades are water-based anionic dispersions with a uniform milky-white appearance. The active component is nano-scale antimony pentoxide (Sb₂O₅), produced via an advanced reflux oxidation process. They resist sedimentation and maintain excellent dispersion stability under normal conditions. Optimized with triethanolamine, they enhance processability and suit all aqueous systems and industrial applications.

UMCAP38: Sb₂O₅ content ≥38%. Matches NYACOL A1540. Versatile for textiles, coatings and resins.

UMCAP46: Sb₂O₅ content ≥46%. Controlled nano-particle morphology. Customized for modacrylic fibers, replacing NYACOL A1550. Mass-produced by leading modacrylic fiber manufacturers in Southeast Asia and the Middle East.

Core Advantages: Superior Performance for Industrial Needs

Shared Core Advantages (UMCAP38 & UMCAP46)

1.Nano-penetration, no property lossNano-size particles deliver excellent substrate penetration, deeply integrating into coatings, films, fibers and resins. They boost flame retardancy without compromising mechanical strength, transparency or appearance — ideal for semi-transparent applications.

2.Low color impact, preserves original shadeExcellent liquid dispersion avoids discoloration. Eliminates yellowing/darkening common with traditional retardants, meeting color and whiteness requirements for premium textiles, colored coatings and decorative finishes.

3.Easy processing, cost & time savingsWater-based fluidity prevents spray gun clogging. No special dispersion equipment needed for mixing. Simplifies workflows, reduces capital investment and boosts efficiency in automated lines.

4.High efficiency at low loadingStrong synergy with halogenated retardants. Optimal performance at 3:1 halogen/antimony molar ratio. Low addition achieves high flame ratings, adding minimal weight and preserving texture. Suits high-demand applications like CCL, polyester/epoxy/phenolic resins.

5.Eco-friendly & compliantPure water-based, solvent-free. No harmful emissions during use. Complies with EU REACH and global environmental regulations. Non-PBT/vPvB. Safe transport, storage and handling with full industrial certifications.

Exclusive Advantages of UMCAP46 (Modacrylic Fiber Grade)

1.Stable nano-morphology for fiber productionUniform, non-agglomerated nano-Sb₂O₅ dispersion meets strict particle size requirements for modacrylic fiber manufacturing.

2.Full compatibility with DMACFormulated for DMAC (N,N-dimethylacetamide, CAS: 127-19-5) — the key solvent in modacrylic fiber production. No sedimentation/phase separation; preserves solvent stability. Ensures --continuous production and high yield.

3.Proven market performance, ideal replacementSuccessfully mass-adopted by leading modacrylic fiber producers in Southeast Asia and the Middle East, fully replacing NYACOL A1550. Matches performance at lower cost; aligns with local processes and environmental standards. Reliable bulk supply.

Versatile Applications

UMCAP38 (38% Sb₂O₅)

oTextiles: carpets, curtains, tarpaulins, premium wool fabrics

oCoatings: automotive/architectural paints, decorative finishes

oResins & CCL: flame retardant modification

oIndustrial: metal passivation in refining, wastewater treatment

UMCAP46 (46% Sb₂O₅)

oPrimary: modacrylic fiber flame retardant

oAlso: high-solids coatings, high-performance resin systems, thick coatings, demanding aqueous industrial formulations

Professional Assurance: Quality Control & Global Support

UrbanMines Tech maintains a rigorous quality management system. UMCAP38/46 undergo strict factory inspection, with key parameters (Sb₂O₅ content, viscosity, specific gravity, pH, impurities) exceeding industry standards and ensuring batch-to-batch consistency.

Customization available: tailored particle size, pH and concentration. We provide technical formulation guidance and after-sales support to help customers achieve import substitution, optimize performance and reduce costs.

Choose UMCAP38/46 for a high-performance, stable, cost-effective colloidal antimony pentoxide flame retardant solution — the ideal alternative to U.S. products, aligned with global eco-friendly flame retardant trends.