Kabasph additive Solutions for Water-based Two-component Polyurethane Systems

Water-based two-component polyurethane systems are widely used in coatings, adhesives, and sealants where low VOC, high performance, excellent chemical resistance, and durable final properties are essential. However, formulating with these systems presents unique challenges: pigment and filler dispersion stability in aqueous media, viscosity control for high filler loading, settling and sagging during storage and application, insufficient substrate wetting—especially on oily or contaminated surfaces—surface defects such as craters, orange peel, floating and flooding, foam generation that compromises film quality, and compatibility with the polyurethane chemistry without adversely affecting pot life, curing speed, storage stability, gloss, transparency, or final film properties. Additives must be carefully selected to maintain compatibility with both the aqueous phase and the reactive polyurethane components.

As an innovative, collaborative, and trusted partner in the chemical industry, China AAB Industry Technology Group's Member Company has specialized in the R&D, production, and sales of high-performance additives since 2006. Our additive production base holds ISO 9001, ISO 14001, and OHSAS 18001 certifications. Covering 36,630 m² with over 60 reactors and an annual capacity of 16,000 metric tons, we deliver reliable supply and customized solutions worldwide. Our additives are specifically designed for demanding coating, adhesive, and sealant systems. The product portfolio includes Wetting & Dispersing Agents, Thixotropic & Anti-Settling Agents, Defoamers, Wetting & Leveling Agents, Adhesion Promoters & Coupling Agents, Wax Additives, and Hand Feel Agents. These products are compatible with polyurethane, epoxy, acrylic, UV-curable, solvent-free, and high-solids resin systems.

l KBS-F0700 is a block acrylate dispersant for general-purpose colour paste dispersion in water-based two-component polyurethane systems. It is widely applicable and provides stable dispersion of inorganic pigments, organic pigments, and carbon black. Its broad compatibility makes it a reliable general-purpose dispersant for waterborne 2K PU coatings.

l KBS-F0710 is a block acrylate dispersant for universal colour paste dispersion. It offers wide applicability and general-purpose dispersion performance, with additional benefits in anti-rust pigment viscosity reduction and strontium chrome yellow systems. It is suitable for waterborne 2K PU coatings requiring both colour stability and corrosion protection.

l KBS-F0720 is a block copolymer dispersant for inorganic, organic, and carbon black pigment pastes. It provides excellent water resistance and viscosity reduction in high concentration white pastes. Its water-free nature makes it ideal for zinc-rich systems, where moisture sensitivity is a concern.

l KBS-F2100 is an acid-containing group copolymer solution dispersant for inorganic pigment and filler dispersion. It provides excellent dispersion stability for titanium dioxide, making it suitable for waterborne 2K PU white coatings and pigmented systems.

l KBS-F2200 is an acid-containing group copolymer solution dispersant for inorganic pigment filler dispersion. It provides excellent dispersion stability for titanium dioxide, ensuring consistent colour and opacity in waterborne 2K PU formulations.

l KBS-F2720 is a block copolymer dispersant for organic pigments, inorganic pigments, fillers, and carbon black. It prevents floating and flooding during colour mixing and is especially suitable for conductive carbon black and conductive graphite dispersion. Its balanced dispersion and stability make it ideal for functional and conductive waterborne 2K PU systems.

l KBS-F2700A is a block copolymer dispersant for organic pigments, inorganic pigments, fillers, and carbon black. It prevents floating and flooding in colour paste systems and is especially suitable for 177/122/179 red paste. It provides excellent colour development and stability in demanding waterborne 2K PU tinting systems.

l KBS-C420 is an organic polyurea anti-sinking thixotropic agent. It provides excellent anti-sinking and anti-sagging effects without affecting gloss and levelling, and has little effect on system viscosity. It is suitable for water-based 2K PU systems requiring rheology control without compromising appearance.

l KBS-C5610 is a salt of modified polyamide anti-sinking thixotropic agent. It provides good anti-sagging performance and effective anti-sinking for pigment fillers with large specific gravity, with only a small effect on system viscosity. It is particularly suitable for high-density filler systems in waterborne 2K PU coatings.

l KBS-L4220 is a polyether silicone wetting and levelling agent. It effectively reduces static surface tension and improves shrinkage, making it suitable for waterborne 2K PU coatings where substrate wetting and surface uniformity are required.

l KBS-L4250 is an alkynediol derivative wetting and levelling agent. It effectively reduces both dynamic and static surface tension, improves shrinkage, and favours foam inhibition. It is suitable for waterborne 2K PU systems applied by spraying, rolling, or brushing.

l KBS-L4250A is an alkynediol derivative wetting and levelling agent. It effectively reduces dynamic and static surface tension, improves wetting, and improves shrinkage. It is particularly useful in waterborne 2K PU coatings where both dynamic and static wetting are critical.

l KBS-L4140 is an alkynediol derivative additive that functions as both a wetting and levelling agent and a defoamer. It effectively reduces dynamic surface tension and provides good foam inhibition and defoaming performance. Its dual functionality makes it valuable in waterborne 2K PU systems where both surface wetting and foam control are required.

l KBS-L4120 is a polyether-modified silicone wetting and levelling agent. It strongly reduces static surface tension and maintains good stability even at pH greater than 12. It is suitable for alkaline waterborne 2K PU systems where conventional additives may lose performance.

l KBS-L3610 is a fluorine modified acrylate solution levelling agent. It improves long-wave levelling and is universal in both water and oil systems. It is suitable for waterborne 2K PU coatings requiring smooth surface appearance and broad compatibility.

l KBS-L333 is a polyether-modified silicone wetting and levelling agent. It is water-oil universal, provides moderate reduction of surface tension, excellent wetting and levelling, and improves the feel of the product. It is suitable for waterborne 2K PU coatings where hand feel and surface quality are important.

l KBS-X062A is an organosiloxane polymer defoamer. It provides excellent foam inhibition and defoaming performance, with good adaptive efficiency to emulsion, dispersion, and water-soluble systems. It is suitable for water-based two-component polyurethane formulations where foam control is critical.

Application Areas

Water-based two-component polyurethane systems are widely used across industries where low VOC, high performance, and reliable curing are required. Typical application areas include:

l Industrial Coatings — Water-based 2K PU coatings are widely used for machinery, equipment, and metal surfaces where chemical resistance, durability, and environmental compliance are essential.

l Wood Coatings — Applied in wood coatings for furniture, flooring, and joinery where fast drying, good adhesion, and durable appearance are required.

l Plastic Coatings — Suitable for plastic coatings where waterborne 2K PU systems provide good adhesion and appearance on various plastic substrates.

l Automotive Refinish — Used in automotive refinish and transportation coatings where gloss, durability, and fast cure are essential, with the added benefit of low VOC.

l Metal Protection — Applied to metal substrates for corrosion protection, appearance enhancement, and durable adhesion. Additives such as anti-settling agents and adhesion promoters help ensure consistent performance.

l Flooring Coatings — Used in waterborne 2K PU flooring coatings where abrasion resistance, chemical resistance, and low odor are important.

l Adhesives and Sealants — Water-based 2K PU systems are also used in adhesives and sealants where controlled rheology, reliable curing, and durable final properties are required.

l General Industrial Coatings — Suitable for a broad range of general industrial coatings where dispersion stability, rheology control, surface quality, and foam control must be balanced within a waterborne 2K PU formulation.

Formulating with water-based two-component polyurethane systems requires additives that address dispersion stability, viscosity reduction, rheology control, surface wetting—especially on challenging substrates—levelling, and foam management—all while maintaining compatibility with the aqueous phase and reactive polyurethane components. Our comprehensive additive portfolio provides formulators with a complete toolkit for optimizing water-based 2K PU formulations. From KBS-F0700, KBS-F0710, KBS-F0720, KBS-F2100, KBS-F2200, KBS-F2720, and KBS-F2700A dispersants that ensure pigment and filler stability with effective viscosity reduction, to KBS-C420 and KBS-C5610 anti-settling thixotropic agents that prevent settling and sagging, to KBS-L4220, KBS-L4250, KBS-L4250A, KBS-L4140, KBS-L4120, KBS-L3610, and KBS-L333 wetting and levelling agents that deliver defect-free surfaces, to KBS-L4140 and KBS-X062A defoamers that control foam in demanding systems—every product is engineered for consistent performance, regulatory compliance, and cost-effective formulation.

For technical data sheets, samples, or customized recommendations for your specific water-based two-component polyurethane application, please contact our technical team.