Kabasph Additive Solutions For Two-Component Polyurethane Adhesives

Two-component polyurethane systems are widely used in coatings, adhesives, sealants, elastomers, floor coatings, and industrial applications where fast cure, high mechanical strength, and excellent chemical resistance are essential. However, formulating with these systems presents unique challenges: filler and carbon black dispersion, viscosity control at high filler loading, settling and sagging during storage and application, insufficient substrate wetting—especially on oily or contaminated surfaces—surface defects such as craters and orange peel, foam generation that compromises film quality, and adhesion failure on metal and non-metal substrates. Additives must be carefully selected to maintain compatibility with both the polyol and isocyanate components without adversely affecting curing speed, activation period, pot life, storage stability, transparency, elongation, or final film properties.

Dispersants

l KBS-F5000 is a general-purpose dispersant based on acid polyester compounds. It offers high cost performance and is suitable for standard two-component polyurethane formulations where reliable pigment and filler dispersion is required.

l KBS-F4020A is a modified polyurethane compound dispersant with no free ammonia. It does not affect curing speed or activation period, helps enhance elongation at break, improves modulus, and provides obvious viscosity reduction for fillers. It is a general-purpose dispersant suitable for a wide range of 2K PU systems.

l KBS-F8020 is an acid polyester compound dispersant with 100% active ingredient. It is a strong viscosity-reducing dispersant, especially suitable for polyether polyurethane systems. Its solvent-free nature makes it valuable for high-solids and low-VOC formulations.

l KBS-F9760 is based on alkyl ammonium salts of polymer copolymers. It is a general-purpose dispersant with obvious viscosity reduction effect on carbon black, excellent stability, and is especially suitable for two-component PU systems.

Anti-sinking Thixotropic Agents

l KBS-C410K is an organic polyurea anti-sinking thixotropic agent suitable for both one-component and two-component PU systems. It has low impact on transparency, viscosity, storage stability, and curing activity, while delivering excellent anti-sinking and thixotropic effects.

l KBS-C3120X is a polyamide wax paste anti-sinking thixotropic agent using an environmentally friendly solvent for two-component polyurethane. It provides excellent anti-sinking and thixotropic effects. Due to its unique molecular structure, it also helps improve bond strength.

Wetting and Levelling Agents

l KBS-L333K is a polyether-modified silicone wetting and levelling agent with excellent wetting and levelling properties. It is suitable for a broad range of two-component polyurethane coatings and sealants.

l KBS-L331K is a polyether-modified silicone wetting and levelling agent. It delivers excellent wetting and levelling performance combined with foam inhibition, making it useful in systems where surface quality and foam control are both important.

l KBS-L411K is an organosiloxane polymer wetting agent designed for oily substrates. It strongly reduces surface tension and effectively solves the decline in adhesion caused by substrate oil contamination.

l KBS-L3580A is a polyacrylate solution levelling agent with good compatibility. It is suitable for improving the levelling of highly transparent systems, especially clear coats and transparent sealants.

Defoamers

l KBS-X052K is a polyacrylate non-silicone defoamer. It balances defoaming ability and compatibility, making it suitable for formulations where silicone-free foam control is preferred.

l KBS-X066K is a fluorine-modified silicone solution defoamer. It is a fluorine-modified organosilicon defoamer with strong defoaming and foam inhibition performance.

l KBS-X055K is a polyacrylate defoamer with excellent defoaming performance and good compatibility. It is suitable for two-component polyurethane systems requiring efficient and compatible foam control.

l KBS-X6800A is a silicone defoamer with fast foam breaking speed and excellent foam inhibition and defoaming performance. It is ideal for demanding 2K PU systems where rapid foam elimination is required.

l KBS-X053K is a non-silicone defoamer with better effect on PU systems. It provides reliable foam control while minimizing compatibility risks in polyurethane formulations.

Tackifiers

l KBS-T010K is an amino-containing organosilane tackifier. It provides excellent adhesion to metal and non-metal surfaces, making it suitable for two-component polyurethane adhesives, sealants, and coatings.

l KBS-T020K is an epoxy-containing organosilane tackifier. It is designed as an adhesion promoter for two-component PU systems, helping improve bonding to metal and non-metal substrates.

Application Areas

Two-component polyurethane systems are widely used in applications requiring high performance, fast cure, and excellent mechanical properties. Typical application areas include:

l Coatings — Two-component PU coatings for automotive refinish, industrial equipment, wood, plastic, metal, concrete, and floor surfaces. These systems require good pigment dispersion, levelling, foam control, and adhesion.

l Adhesives and Sealants — High-performance 2K PU adhesives and sealants for construction, automotive, marine, electronics, and general industrial bonding. Additives help improve filler dispersion, anti-settling, substrate wetting, and adhesion.

l Elastomers — Cast polyurethane elastomers for rollers, wheels, seals, gaskets, and industrial parts. Rheology control and defoaming are critical for consistent casting and final properties.

l Floor Coatings — Self-levelling and mortar-type two-component polyurethane floor coatings for industrial plants, warehouses, parking garages, and commercial spaces. Anti-settling and levelling agents are essential for uniform appearance and performance.

l Industrial Maintenance — Protective coatings and sealants for equipment, pipelines, tanks, and structures exposed to chemicals, moisture, and mechanical stress.

l Composites and Potting — Two-component PU systems for composite matrices, potting, and encapsulation where controlled viscosity, wetting, and foam-free curing are required.

About Our Company

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. 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.

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