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

BASF PU 1331 Thickener

BASF PU 1331 Thickener is a polyurethane-based rheology modifier from BASF’s Acrysol™ series, designed for waterborne coatings and inks. It delivers excellent viscosity control, sag resistance, and shear-thinning behavior without compromising gloss or storage stability. Compatible with acrylic, vinyl, and styrene-acrylic dispersions, it enables efficient thickening at low dosage with minimal impact on formulation pH or foaming.
  • basf pu 1331 thickener_0f7cf6c9
  • basf pu 1331 thickener_0f7cf6c9

Features Of BASF PU 1331 Thickener

  1. Non-ionic polyurethane rheology modifier delivering efficient thickening in waterborne systems.

  2. Provides excellent sag resistance and anti-drip performance in vertical applications.

  3. Offers outstanding compatibility with acrylic, styrene-acrylic, and vinyl acetate-based dispersions.

  4. Delivers low-shear viscosity enhancement while maintaining good flow and leveling properties.

  5. Stable under freeze-thaw cycling and compatible with common co-solvents and surfactants.

Typical Applications Of BASF PU 1331 Thickener

  1. Architectural interior and exterior paints.

  2. Wood coatings including stains and clear finishes.

  3. Industrial maintenance coatings for metal and concrete substrates.

  4. Waterborne primers and sealers.

  5. Decorative plasters and textured wall finishes.

Specifications Of BASF PU 1331 Thickener

Chemical TypeNon-ionic polyurethane associative thickener
Product FormLiquid dispersion
AppearanceOpaque white to off-white viscous liquid
pH (1% aqueous solution)7.0 – 8.5
Solids Content28 – 32 wt%
Viscosity (Brookfield RVT, spindle #3, 20 rpm, 25°C)15,000 – 30,000 mPa·s
Primary ApplicationsWaterborne architectural and industrial coatings
Key FeaturesAssociative thickening, low VOC, shear-thinning behavior


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