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

BASF Styrofan SDB623ap Waterproofing Emulsion

BASF Styrofan SDB623ap Waterproofing Emulsion is a styrene-butadiene copolymer latex emulsion designed for high-performance cementitious waterproofing slurries and renders. It enhances adhesion, flexibility, crack-bridging, and water resistance in tile adhesives and repair mortars. Compatible with Portland cement, it meets EN 1504-2 standards and delivers excellent workability and durability in demanding construction applications.
  • basf styrofan sdb623ap waterproofing emulsion_2847cca9
  • basf styrofan sdb623ap waterproofing emulsion_2847cca9

Features Of BASF Styrofan SDB623ap Waterproofing Emulsion

  1. Acrylic-styrene copolymer-based anionic emulsion offering excellent water resistance and film flexibility.

  2. Low-VOC formulation compliant with current European environmental regulations (e.g., EN 1504-2, VOC ≤ 50 g/L).

  3. Enables strong adhesion to porous mineral substrates including concrete, mortar, and plaster without primer.

  4. Forms a continuous, breathable, and alkali-resistant waterproofing membrane upon curing.

  5. Compatible with cementitious systems for use in polymer-modified mortars and renders.

Typical Applications Of BASF Styrofan SDB623ap Waterproofing Emulsion

  1. Waterproofing layer in external thermal insulation composite systems (ETICS) for façade protection.

  2. Base coat additive in flexible, crack-bridging exterior wall renders.

  3. Key binder in tile adhesives and grouts requiring enhanced water resistance and open time.

  4. Component in waterproofing slurries for balconies, terraces, and wet-area screeds.

  5. Modification agent for repair mortars exposed to intermittent water contact.

Specifications Of BASF Styrofan SDB623ap Waterproofing Emulsion

Chemical TypeAcrylic-styrene copolymer emulsion (anionic)
Product FormWhite to slightly bluish liquid, viscous emulsion
AppearanceHomogeneous, free of lumps or phase separation
Solids Content (by mass, ISO 3251)Approx. 58–60 %
pH Value (25 °C, DIN 53195)7.5–8.5
Minimum Film Formation Temperature (MFFT, ISO 2178)+2 °C
Viscosity (Brookfield RV, 25 °C, spindle #3, 20 rpm)3,000–5,000 mPa·s
Storage Stability (at 5–30 °C, unopened)≥ 12 months


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