06.14.19
At this year's Latin American Coatings Show (LACS) taking place at Centro Banamex in Mexico City from June 19-21, LANXESS Urethane Systems will present its comprehensive product portfolio for the coatings industry (located at distribution partner First Quality Chemicals - Booth 811-818).
One focus will be on innovative raw materials for formulating aqueous and solvent-free systems for a wide range of applications, from glass fiber sizing and plastic coating to textile finishing and rotor blade coatings of wind turbines.
LANXESS’s "Low Free" products (<0.1 percent diisocyanate monomer content) based on aliphatic isocyanates, in particular, combine an outstanding property profile with the highest ecological and industrial hygiene standards. These Adiprene LF prepolymers are preferred in applications subjected to continuous exposure to environmental influences with high expectations in terms of durability and longevity; for example, outdoor waterproofing, protecting concrete for bridges, roofs, and balconies, and anti-corrosion coatings on metal.
“For high-end applications, like the protective coating of the leading edge of wind turbine rotor blades, this technology protects the rotor blades from the variety of stresses, such as UV radiation and erosion, and also provides the necessary flexibility/elasticity from a durable coating on a flexible and vibrating blade. In particular, the offshore sector is challenging because conducting the maintenance of the blades is highly complicated in this environment,” said Julie Chapelet, global strategic marketing manager at the LANXESS Urethane Systems business unit.
The Trixene Aqua range of water-based blocked isocyanate dispersions is an excellent crosslinker and adhesion promoter for aqueous coatings systems. They boost the chemical and mechanical resistance of coatings and sizing formulations to allow much better performance and durability in the final application. Due to the blocked isocyanate group, they are more stable as the respective free counterparts, and can easily be formulated in 1-K and 2-K systems together with a variety of complementary aqueous resins, e.g. hydroxy-functional acrylics, polyesters and urethanes.
This is beneficial for instance in textile processing where Trixene Aqua BI 220 can be used as an adhesion promoter for water-repellent finishes on sports and fashion clothing, delivering superior durability. Likewise, Trixene Aqua BI 201 can be used as a crosslinker for automotive clear coats, giving rise to improved chipping resistance and optical appearance.
LANXESS offers a full portfolio of water-based Witcobond polyurethane dispersions (PUD). Especially for the construction industry, PU acrylic hybrids (Witcobond A-100) are used as a top coat binder for wood flooring and concrete coating. By blending with Witcobond 386-03, its properties can be easily adjusted to meet the required flexibility and impact resistance of the final application. Witcobond products can be employed in a broad range of other applications, such as waterborne coatings and finishes for hard and flexible substrates. They include anionic, cationic and nonionic chemistry, so binders covering the full pH range are available.
Epoxy resins have excellent properties and are widely used in corrosion protection coatings and flooring applications. Due to their high mechanical rigidity, they can be brittle and tough, therefore they need to be flexibilized to suit specific applications. LANXESS’ Trixene blocked prepolymers readily react with standard amine hardeners used in 2K epoxy resin formulations, allowing permanent flexibilization of the end product. Specifically, our bio-based and nonylphenol-free Trixene BI 7774 improves flexibility and impact resistance of epoxy coatings, without compromising chemical resistance as well as addresses regulatory compliance.
