Kabasph Additives For One-Component Polyurethane Adhesive

One-component polyurethane systems are widely used in adhesives, sealants, and elastomers where convenient single-package handling, moisture-cure reliability, and robust final performance are essential. However, formulating with these systems presents unique challenges: filler and pigment 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 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 the polyurethane chemistry without adversely affecting curing speed, activation period, storage stability, transparency, elongation, or final film properties.

l KBS-F5000 is a general-purpose dispersant based on acid polyester compounds. It provides cost-effective pigment and filler dispersion for one-component polyurethane formulations where balanced performance and economical formulation are priorities.

l KBS-F4020A is a modified polyurethane compound dispersant with a free ammonia-free composition. It does not affect curing speed or activation period, assists in increasing elongation at break, improves modulus, and delivers obvious viscosity reduction for fillers. It serves as a general-purpose dispersant suitable for a wide range of one-component polyurethane systems.

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

l KBS-C410K is an organic polyurethane-based anti-sinking thixotropic agent. It exerts low impact on transparency, viscosity, storage stability, and curing activity, while providing excellent anti-sinking and thixotropic effects. This makes it ideal for one-component polyurethane systems requiring rheology control without compromising optical clarity or reactivity.

l KBS-L333K is a polyether-modified silicone wetting and levelling agent delivering excellent wetting and levelling properties. It is a versatile additive suitable for a broad range of one-component polyurethane coating and sealant formulations.

l KBS-L331K is a polyether-modified silicone wetting and levelling agent that combines excellent wetting and levelling properties with foam inhibition. It is particularly useful in systems where surface quality and foam control must be addressed simultaneously.

l KBS-L411K is an organosiloxane polymer wetting agent specifically designed for oily substrates. It strongly reduces surface tension and effectively solves the adhesion degradation caused by oil contamination of substrates—a common challenge in automotive, industrial, and maintenance applications where substrate cleanliness cannot be fully guaranteed.

l KBS-L3580A is a polyacrylate solution levelling agent with good compatibility, suitable for improving the levelling of highly transparent systems. It is particularly recommended for clear coats and transparent sealant formulations where optical clarity is critical.

l KBS-X055K is a non-silicone polyacrylate defoamer with good compatibility and efficient defoaming performance. Its non-silicone nature minimizes the risk of surface defects such as craters and fish eyes.

l KBS-X053K is a non-silicone defoamer with better effect on PU systems. It is specifically optimized for polyurethane formulations, providing reliable foam control without the drawbacks associated with silicone-based defoamers.

l KBS-X6800A is a silicone defoamer with fast foam breaking speed and excellent foam inhibition and defoaming performance. It is suitable for demanding one-component polyurethane systems where rapid and thorough foam elimination is required.

l KBS-T0200 is a tackifier based on organosilanes containing epoxy groups. It provides excellent adhesion to metal and non-metal surfaces, making it an essential additive for one-component polyurethane adhesives, sealants, and coatings where durable bonding to diverse substrates is required.

Application Areas

One-component polyurethane systems are widely used across industries where convenient single-package application and reliable moisture-cure performance are valued. Typical application areas include:

l Automotive — One-component moisture-curable polyurethane adhesives and sealants are widely used to bond automotive windshields and backlights to automobile bodies, as well as for interior trim bonding and underbody sealing.

l Construction and Infrastructure — Used for sealing concrete joints, waterproofing balconies, terraces, walkways, and outdoor stairs on concrete and gravel surfaces; bonding and sealing joints in roads, airport runways, squares, wall pipes, wharves, roofs, underground garages, and basements; and leakage sealing for oil refineries and chemical plants.

l Industrial Flooring — Bonding and sealing for industrial floors, including epoxy floors and various paint surfaces, where durable adhesion and moisture-cure reliability are essential.

l Coatings — One-component polyurethane coatings for protective and decorative applications on wood, plastics, glass, ceramics, masonry, metals, and concrete substrates. Available as solvent-free or solvent-containing formulations depending on application requirements.

l Adhesives and Sealants — Specialty adhesive and sealant systems for bonding diverse substrates including wood, plastics, leather, paper, textiles, glass, ceramics, plaster, masonry, metals, and concrete. Standard application methods include spraying, spreading, flooding, pouring, dipping, roller coating, and extrusion.

l Waterproofing Systems — Elastomeric waterproofing membranes and sealants for building envelopes, wet areas, and infrastructure protection.

l Elastomers — Cast and molded polyurethane elastomer systems requiring controlled rheology, reliable curing, and consistent final properties.

Formulating with one-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 one-component polyurethane formulations. From KBS-F5000, KBS-F4020A, and KBS-F8020 dispersants that ensure filler and pigment stability with effective viscosity reduction, to KBS-C410K thixotropic agent that prevents settling and sagging, to KBS-L333K, KBS-L331K, KBS-L411K, and KBS-L3580A wetting and levelling agents that deliver defect-free surfaces even on oily substrates, to KBS-X055K, KBS-X053K, and KBS-X6800A defoamers that control foam in demanding systems, to KBS-T0200 tackifier that ensures 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 one-component polyurethane application, please contact our technical team.