Lanspec HSR is a high‑performance nonionic surfactant specifically developed for emulsion polymerisation applications where enhanced latex durability and coating performance are required. It functions as an effective co‑stabiliser and emulsifier, helping to improve latex stability whilst delivering significant improvements in the end‑use properties of the final polymer system.
The product is particularly suited for vinyl acetate and vinyl acetate‑VeoVa polymer systems, where it provides excellent emulsification and stabilisation performance. When used in combination with Kemsurf ESD, Lanspec HSR has been shown to significantly improve wet scrub resistance and reduce water sensitivity in latex paints compared with conventional surfactant systems and nonylphenol ethoxylates.
Lanspec HSR is especially recommended for coatings and adhesive applications requiring enhanced water resistance, durability, and long‑ term performance. Its high HLB value and nonionic character make it an effective alternative to traditional nonylphenol‑based stabilisers while maintaining excellent emulsion stability and coating
performance.
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Key Features
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• Improves scrub and water resistance - Enhances wet scrub resistance and reduces water sensitivity in latex coatings.
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Effective emulsifier for vinyl polymer systems - Provides excellent emulsification and stabilisation in VAM and VA/VeoVa polymer systems.
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APEO‑free nonionic co‑stabiliser - A high‑performance alternative to nonylphenol ethoxylates for improved latex durability and stability.
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Applications
Lanspec HSR is used in emulsion polymerisation and coating applications where enhanced latex durability, water resistance, and scrub resistance are required, including:
Vinyl Acetate (VAM) Emulsions
– Provides effective emulsification and stabilisation in vinyl acetate polymer systems, helping to improve latex performance and stability.
Vinyl Acetate‑VeoVa Copolymers
– Suitable for VA/VeoVa systems where improved water resistance and enhanced coating durability are required.
Latex Paints and Coatings
– Used as a co‑stabiliser to improve wet scrub resistance, washability, and overall coating performance.
Architectural Coatings
– Particularly beneficial in interior and exterior decorative coatings where improved durability and water resistance are important.
Adhesives and Sealants
– Enhances moisture resistance and long‑term performance in latex‑based adhesive and sealant systems.
Nonylphenol Ethoxylate Replacement
– Provides an APEO‑free alternative to conventional nonionic stabilisers while maintaining excellent latex stability and end‑use performance.
Specification
Appearance at 25°C
White to off-white solid flakes or powder
Cloud point °C (1g in 10% NaCl solution)
73.0 - 77.0
pH (1% aqueous)
5.0 - 8.0
Typical Properties
Composition
Nonionic surfactant
Viscosity at 60°C
103
Solubility in water
Soluble
Surface tension at 0.1% aqueous (mN/m)
46.37
Solids content %
100
HLB value
17.0
Pour point °C
~48
Odour
Characteristic
Relative density at 60°C
1.04
Flash point open cup °C
>175
