Kabasph Additives Solutions for Solvent Two-component Polyurethane Systems

Solvent-based two-component polyurethane systems are widely used in coatings, adhesives, sealants, and elastomers where high performance, fast cure, durable appearance, and reliable final properties are essential. However, formulating with these systems presents unique challenges: pigment and filler dispersion stability, 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 adhesion failure on metal and non-metal substrates. Additives must be carefully selected to maintain compatibility with the polyurethane chemistry without adversely affecting pot life, curing speed, storage stability, gloss, transparency, recoatability, or final film properties.

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-F500A is a general-purpose dispersant based on acid polyester compounds. It provides cost-effective pigment and filler dispersion for solvent-based two-component polyurethane formulations where balanced performance and economical formulation are priorities.

l KBS-F402 is a modified polyurethane compound dispersant designed to inhibit floating colour and maintain gloss stability. It offers general-purpose dispersion, inorganic viscosity reduction, and organic pigment dispersion, making it suitable for multi-pigment 2K PU systems.

l KBS-F802 is a 100% active ingredient dispersant based on acid polyester compounds. It is a strong viscosity-reducing dispersant, especially suitable for solvent-free and polyether polyurethane systems. Its solvent-free nature makes it valuable for low-VOC and high-solids formulations.

l KBS-F100 is an acid polyester compound dispersant that delivers gloss, viscosity reduction, and excellent colour spreading performance in white topcoats. It is universal for polyether, polyester, hydroxypropylene, and castor oil systems.

l KBS-F161A is a modified polyurethane compound additive with high efficiency for organic pigments, inorganic pigments, and carbon black. It is a universal polymer additive for demanding solvent-based 2K PU dispersion.

l KBS-F173 is a modified polyurethane compound dispersant developed for alkyd and polyester systems. It provides excellent colour spreading effect in carbon black pigmented formulations.

l KBS-F164 is a modified polyurethane compound dispersant for the dispersion of macromolecule pigments and colour pigment spreading. It is suitable for high-performance pigment concentrates and 2K PU colour systems.

l KBS-F050 is a block copolymer dispersant for highly pigmented carbon black. It reduces viscosity and disperses blue phase, specifically for acrylic systems.

l KBS-F860 is an acid polyester compound dispersant for inorganic pigment and filler wetting, dispersion, viscosity reduction, and stable colour development. It is suitable for titanium dioxide and extender pigment systems.

l KBS-F104S is a silicone compound additive for anti-floating and anti-flooding. It is used as a supplementary additive in multi-pigment 2K PU systems to improve colour uniformity.

l KBS-C410 is an organic polyurea anti-sinking thixotropic agent. It exerts low impact on transparency, viscosity, gloss, storage stability, and curing activity, while providing excellent anti-sinking, anti-sagging, and anti-floating effects. It is ideal for clear coats and high-gloss topcoats.

l KBS-C330 is a polyethylene wax paste anti-sinking agent. It is easy to disperse, does not affect gloss, provides anti-sinking and anti-flocculation performance, effectively prevents soft settling, and offers directional effect for metallic pigments.

l KBS-C360 is a polyethylene wax paste based on an KBS-C330 high solids version. It is easy to disperse, does not affect gloss, provides anti-sinking and anti-sagging performance, effectively prevents soft settling, and has a directional effect on metallic pigments.

l KBS-C340A is an EVA wax paste. In the absence of CAB and NC, it provides excellent directional effect on effect pigments such as aluminium powder and pearlescent powder.

l KBS-C3120X is a polyamide paste. It is easily dispersed and provides excellent anti-sinking and anti-sagging performance, with directional effect on metallic pigments.

l KBS-C3220X is a polyamide wax paste. It is easily dispersed and provides excellent anti-sinking and anti-sagging performance, with directional effect on metallic pigments. It performs better than KBS-C3120X after grinding.

l KBS-L306 is an organosiloxane solution levelling agent. It is a general-purpose organosilicon levelling agent that is not easy to affect recoatability, making it suitable for multi-layer 2K PU coating systems.

l KBS-L333 is a polyether-modified silicone wetting and levelling agent. It is water-oil general purpose, provides medium reduction of surface tension, excellent wetting and levelling, and improves hand feeling.

l KBS-L331 is a polyether-modified silicone wetting and levelling agent. It provides medium reduction of surface tension, excellent wetting and levelling, improved feel, and is not easy to foam.

l KBS-L410 is a silicone polymer wetting and levelling agent. It provides medium reduction of surface tension, excellent wetting and levelling, dry feel, and good alignment for matt powder and aluminium powder.

l KBS-L411 is a silicone polymer wetting agent for oil-based substrates. It strongly reduces surface tension and effectively solves the substrate oil-induced shrinkage phenomenon.

l KBS-L358A is a polyacrylate solution levelling agent with good compatibility. It is very suitable for overprint varnish to improve long-wave levelling.

l KBS-L380 is a polyester compound levelling agent with good compatibility. It is very suitable for overprint varnishes to improve gloss and fullness at 20° angle.

l KBS-L377 is a fluorine-modified acrylate solution. It provides long-wave levelling through non-mixing and effectively improves dark bubbles.

l KBS-X052 is a polyacrylate solution defoamer. It is a non-silicone defoamer and is not easy to cause shrinkage.

l KBS-X141 is a silicone solution defoamer with wide versatility and excellent cost performance.

l KBS-X066N is a fluorine-modified silicone solution defoamer. It is a fluorine-modified organosilicon defoamer with strong defoaming and foam inhibition performance.

l KBS-X055 is a polyacrylate defoamer with excellent defoaming performance. It is not easy to cause shrinkage.

l KBS-X053 is a non-silicone defoamer. It is a non-silicone defoamer with better effect on PU systems.

l KBS-Z010 is an amino-containing organosilane adhesion promoter. It provides excellent adhesion to metal and non-metal surfaces and improves flexibility.

l KBS-Z020 is an epoxy-containing organosilane adhesion promoter. It provides excellent adhesion to metallic and non-metallic surfaces and improves flexibility.

l KBS-030A is a polyester compound adhesion promoter. It provides excellent adhesion to metal surfaces, modified flexibility, and can be used in low temperature self-drying systems.

Application Areas

Solvent-based two-component polyurethane systems are widely used across industries where high-performance coatings,adhesives, sealants,and elastomers are required.Typical application areas include:

l Automotive Refinish and Transportation — Solvent-based 2K PU coatings are widely used in automotive refinish,clear coats,primer-surfacers,and topcoats,as well as for transportation vehicle coatings where gloss,durability,and fast cure are essential.

l Industrial Coatings and Maintenance — Used for protective and decorative coatings on machinery,equipment,steel structures,pipelines,and industrial maintenance applications where chemical resistance and weathering performance are required.

l Wood and Furniture Coatings — Solvent-based 2K PU systems provide high-gloss,durable,and abrasion-resistant finishes for wood and furniture,including topcoats,sealers,and pigmented systems.

l Plastic Coatings — Used for coating plastic substrates such as ABS,PC,PU,and other engineering plastics,where adhesion,appearance,and resistance properties are critical.

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

l Adhesives,Sealants,and Elastomers — Solvent-based 2K PU systems are also used in adhesives, sealants,and cast elastomers 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,foam control,and adhesion must be balanced within a solvent-based 2K PU formulation.

Formulating with solvent-based two-component polyurethane systems requires additives that address dispersion stability,viscosity reduction,rheology control, surface wetting—especially on challenging substrates—levelling, foam management, and adhesion promotion—all while maintaining compatibility with the polyurethane chemistry and final film requirements.Our comprehensive additive portfolio provides formulators with a complete toolkit for optimizing solvent-based 2K PU formulations.From KBS-F500A, KBS-F402, KBS-F802, KBS-F100,and other dispersants that ensure pigment and filler stability with effective viscosity reduction,to KBS-C410 and wax-based thixotropic agents that prevent settling and sagging,to KBS-L306, KBS-L333,KBS-L331,KBS-L411,KBS-L358A,and other wetting and levelling agents that deliver defect-free surfaces even on oily substrates,to KBS-X052, KBS-X053, KBS-X055, KBS-X141,and KBS-X066N defoamers that control foam in demanding systems,to KBS-Z010,KBS-Z020,and KBS-030A adhesion promoters that ensure durable adhesion to metal and non-metal surfaces—every product is engineered for consistent performance,regulatory compliance,and cost-effective formulation.

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