Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

Stahl PU-3641 Waterborne Polyurethane Resin

Stahl PU-3641 is a high-performance waterborne polyurethane resin from Stahl’s PU series, offering excellent film formation, flexibility, and abrasion resistance for eco-friendly leather and textile coatings. It delivers low VOC, good hydrolytic stability, and seamless integration with acrylics—ideal for sustainable, durable finishing applications in demanding industrial environments.
  • stahl pu 3641 waterborne polyurethane resin_dda9a746
  • stahl pu 3641 waterborne polyurethane resin_dda9a746

Features Of Stahl PU-3641 Waterborne Polyurethane Resin

  1. Low-VOC, environmentally compliant formulation meeting stringent global regulatory requirements.

  2. Excellent film-forming properties with high gloss retention and superior clarity.

  3. Outstanding flexibility and abrasion resistance on flexible substrates.

  4. Good compatibility with acrylics, cellulose derivatives, and common waterborne additives.

  5. Stable dispersion with broad pH tolerance (pH 7.5–9.0) and low sensitivity to freezing.

Typical Applications Of Stahl PU-3641 Waterborne Polyurethane Resin

  1. Topcoats for synthetic leather (e.g., PU-coated polyester or nylon fabrics).

  2. Finishing systems for automotive interior trim and soft-touch surfaces.

  3. Functional coatings for technical textiles requiring breathability and durability.

  4. Base formulations for eco-friendly furniture and upholstery protective finishes.

  5. Blending component in waterborne leather finishing systems for improved handle and scuff resistance.

Specifications Of Stahl PU-3641 Waterborne Polyurethane Resin

Chemical TypeAliphatic polyurethane dispersion
Product FormWaterborne anionic dispersion
AppearanceTranslucent, slightly bluish liquid
Solids Content35.0 ± 1.0 wt%
pH (25°C)8.2 ± 0.3
Viscosity (Brookfield, LVT, #3 spindle, 20 rpm, 25°C)150–300 mPa·s
Particle Size (D50)Approx. 80–120 nm
Minimum Film Formation Temperature (MFFT)≈ 15°C


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