Lanxess has attended World Of Concrete from 4 – 7 February 2020 in Las Vegas, NV, USA, where Bruno Motta, North American Sales Director, and Tyler Ryan, Global R&D Chemist, were onsite to promote new urethane systems for concrete forming applications.
Lanxess Urethane Systems has developed a range of room temperature curable polyurethane systems that are said to offer outstanding technical performance, exceptional ease of processability, and to be low odour. All the casting and curing is undertaken at room temperature, thereby optimising energy costs and the ecological footprint. According to the company, compared with conventional prepolymers, Adiprene Low Free (LF) prepolymers contain significantly lower levels (< 0.1 %) of free isocyanate, which significantly reduces the worker’s risk of exposure. As a result, these systems are said to contain very little to no noticeable odour.
“Here at Lanxess, we are making an important contribution to the sustainability of PU cast elastomers. Resource efficiency and environmental friendliness of our systems are improved, and the CO2 footprint in the manufacture of casting systems and components made from them is reduced. Such forward-looking concepts are a core element for us in improving sustainability and strengthening the competitiveness of our partners,” explained Dr. Markus Eckert, head of the Urethane Systems business unit at Lanxess.
Adiprene LF prepolymers and Vibracure curatives are low viscosity at room temperature which means no heating is required to process the materials. Since these systems fully cure at room temperature, no ovens, high temperatures, or hot moulds are necessary. This directly improves operations by reducing energy costs and worker safety as well as reduces the carbon footprint, said the manufacturer.
Adiprene LF prepolymers are available in a wide variety of isocyanate and polyol compositions. Cured with formulated Vibracure curatives, these systems are designed for room temperature cast elastomer applications. These cold cast systems are designed with part A and B as simple whole number mixing ratios. These systems are robust, moisture tolerant, and can be either hand-mixed or machine-mixed with low viscosity and long open work times at room temperature, enabling the casting of complex designs ideal for pattern matching applications.