Adiprene®pPDI and LF pPDI urethane prepolymers for demanding applications
Adiprene® pPDI and LF pPDI urethane prepolymers, the latter with less than 0.1% free isocyanate, offer elastomers designed to withstand extreme conditions, where excellent resistance to high and low temperature, water, and chemicals is critical to performance and long part life. They are often used in dynamic applications because of their long life with very low heat build-up from hysteresis and their superior fatigue resistance. Selected Adiprene® pPDI and LF pPDI prepolymers can outperform hydrogenated nitrile butadiene rubber (HNBR) at temperatures as high as 150°C (302°F), opening new application opportunities with performance beyond typical polyurethane elastomers.
Adiprene® pPDI (conventional) and LF pPDI (low free) prepolymers are available with a wide range of polyol backbones. LANXESS scientists can work with you to customize a special formulation to achieve your ideal performance.
Adiprene® aliphatic urethane prepolymers for outstanding weatherability and aesthetics
LANXESS aliphatic Adiprene® LF HDI, LF IPDI, and H12MDI prepolymers offer excellent physical properties for applications requiring clarity, UV stability and weatherability. Adiprene® LF HDI technology enables processors to make elastomers that they won’t make with conventional HDI due to volatility concerns. Adiprene® LF IPDI technology enables excellent aesthetics and weatherability for elastomers, adhesives and coatings. Adiprene® LW conventional H12MDI prepolymers have excellent resistance to hydrolysis at elevated temperatures.
Adiprene®Ribbon Flow® rotational cast prepolymers for fast, efficient roll covering
Adiprene® Ribbon Flow® systems are highly reactive and designed for use with a meter mix machine and a roll rotating mechanism to apply the urethane coating directly to the roll core (or other cylindrical object) without the need for a mold. The material cures on the rotating core as it is applied and the mix head of the meter mix machine slowly traverses the length of the core until the coating is complete. Adiprene® Ribbon Flow® prepolymers can be applied in coatings up to 40mm per pass and deliver tooling savings (no molds), reduced waste, improved productivity and lower production cost than conventional casting. Adiprene®Ribbon Flow® rotational cast urethane prepolymers are available in both conventional and LF (low free isocyanate), in single pass, multiple pass, 2K and 3K systems with various chemistries. LANXESS scientists can work with you to customize a special formulation to achieve your ideal performance.
Adiprene® blocked urethane prepolymers enable processing flexibility
Adiprene® blocked urethanes are based on a technology to control the cure of urethane elastomers. This technology effectively blocks the curing reaction until it is heat activated at the optimum time in the process. This enables the pouring of large and complex parts, and even facilitates the use of hand batching. Blocked systems can be processed with curatives that would otherwise be too fast for traditional unblocked prepolymers, but that provide toughness and other properties not achievable with standard curatives. Blocking of LF prepolymers, which start with lower viscosity, enable more viscous raw materials to be used to achieve unique performance, or to make processing of standard chemistries easier.
Adiprene® blocked urethane prepolymers are available in both conventional and LF (low free) chemistries, with various polyols and blocking agents. LANXESS scientists can work with you to customize a special formulation to achieve your ideal performance.
Ultralast® Thermoplastic Polyurethanes (TPU) for longer life in extreme environments
Ultralast® TPU offers premium performance versus standard TPU and other high grade elastomers in the most extreme applications. With excellent physical and dynamic properties, they enable longer component life, have the ability to withstand both high and low temperatures with better chemical resistance, and provide enhanced cut and tear strength and compression set. Based on LF (low free isocyanate) technology these specialty elastomers have a more regular molecular structure, resulting in both improved processing and end use performance. In the oil & gas, mining and construction industries, seals, pumps, valves and mining screens require heat resistance, cold temperature toughness, chemical resistance and superior dynamic mechanical properties. Ultralast® TPU enhances performance to extend the life of these demanding components.
Applications that are not served by standard TPUs or that currently use more exotic elastomers, such as polyether block amine elastomer (PEBA), copolyester ether (COPE), fluoroelastomers (FKM) and hydrogenated nitrile butadiene rubber (HNBR), can greatly benefit from Ultralast® TPU.