Polyurethane dispersions

Description

1. Product Overview

Polyurethane Dispersions (PUDs) are high-performance, waterborne anionic polyurethane polymers engineered for coatings, adhesives, and surface finishing applications. Primary industrial uses include high-durability wood coatings, automotive interior films, industrial primers, and textile laminating adhesives. The key value proposition is superior mechanical resistance (abrasion, flex, chemical) combined with a zero-to-low VOC profile, replacing solvent-borne systems without compromising hardness or elasticity. Strategically, PUDs are critical for manufacturers transitioning to sustainable chemistries under tightening global environmental regulations (EPA, REACH, China GB standards) while maintaining premium end-product performance.

2. Key Specifications & Technical Characteristics

• Chemical composition: Aliphatic or aromatic polyurethane polymer dispersed in deionized water; non-ionic/anionic stabilization system

• Solid content: 30–50% ±1% (customizable per grade)

• Viscosity (Brookfield, 25°C): 50–1000 cP (selectable for spray, roll, or curtain coating)

• pH range: 7.5 – 9.5

• Mean particle size (D50): 40 – 150 nm (narrow distribution for film clarity)

• Appearance: White to off-white liquid, no coagulum or grit

• Density (20°C): 1.03 – 1.08 g/cm³

• Film tensile strength: Up to 40 MPa (depending on grade)

• Elongation at break: 200 – 800%

• Shelf life: 12 months in original unopened container (5–35°C, frost-free storage)

• Packaging options: 200 kg steel drums, 1,000 kg IBC totes, 20 MT ISO tank containers

3. Core Industrial Applications

• Primary industries: Wood flooring & furniture, automotive interiors, synthetic leather, textile coating, industrial adhesives, printing inks, and paper converting.

• Operational use cases:

  • Wood coatings: Matte and gloss topcoats with >200 MEK double rubs and excellent block resistance.

  • Automotive interior films: Soft-feel, UV-stable coatings on PVC/TPO dashboards and door panels.

  • Textile laminating adhesives: Heat-activated bonding for sportswear and medical textiles with wash durability >50 cycles.

• Performance advantage vs. alternatives:

  • vs. solvent-borne PU: Zero hazardous air pollutants, 70% lower carbon footprint, no special explosion-proof storage.

  • vs. acrylic emulsions: Higher abrasion resistance (Taber >100 mg loss vs >300 mg) and better low-temperature flexibility (-30°C crack-free).

• Cost advantage: Enables thinner film builds (15–25 µm dry) achieving same durability as thicker solvent-borne layers, reducing raw material consumption by 25–30%.

4. Competitive Advantages

• Quality consistency: Batch-to-batch viscosity and particle size controlled within ±2% via real-time inline NIR spectroscopy; ISO 9001:2025 certified production.

• Supply reliability: Dual manufacturing sites (Asia, EU) with total annual capacity >50,000 MT; buffer stock held in regional hubs (Rotterdam, Houston, Shanghai).

• Logistics capability: Expedited LCL and FCL shipments; temperature-monitored containers for all sensitive grades.

• Price competitiveness: Direct polymerization without intermediate resin buying; vertically integrated on polyol and isocyanate precursors for volatile market protection.

• Environmental benefits: <50 g/L VOC, free of APEO, NMP, NEP, and heavy metals; contributes to LEED v4 and BREEAM certification.

• Technical support: Full formulation guide, compatibility matrix with 40+ crosslinkers (aziridine, carbodiimide, isocyanate), and on-site troubleshooting by application engineers.

5. Commercial & Supply Information

• Minimum order quantity (MOQ): 5 MT per grade (trial orders available for 200 kg upon credit approval)

• BULK 20MT loading capacity: 20 MT net per 20-foot container (IBC totes or ISO tank)

• Loading capacity per container (20’ standard):

  • 80 x 200 kg drums (16 MT net) – with pallets

  • 20 x 1,000 kg IBC totes (20 MT net) – floor-loaded

  • 1 x 20 MT ISO tank container (20 MT net) – direct pump-off