Kraton Polymers (Houston, Texas / USA; www.kraton.com) has introduced two new hydrogenated styrenic block copolymers (HSBCs) that boast high elasticity, tensile strength and a lower melt viscosity, opening up a whole new array of process applications, the company said.

The first, “Kraton MD6951” is part of the “Kraton A” family. Thanks to its enhanced flow capability, the grade is suitable for a range of potential applications, Kraton said, including soft touch over moulding, used to manufacture cell phone protectors, power tool grips, protective cling film and sound dampening materials, among others. As other grades in the Kraton A range, MD6951 is characterised by softness, ease of use and compatibility, the company said, adding that thanks to its increased polarity, the material is compatible with polyurethane, polystyrene and polyphenylene oxide, among others. The grade has received FDA compliance, and is said to be exceptionally elastic, allowing products to become more durable, resilient and comfortable.

The other innovation, “Kraton MD1648”, is an enhanced rubber segment styrenic block copolymer. Compatible with polyolefins, the material is used to produce surgical apparel, diapers and industrial textiles, among others. Kraton said MD1648 is characterised not only by high elasticity and strength, but also low viscosity, meaning it can run on existing melt blown process equipment. This fact means that manufacturers can create products that are not just more flexible and soft, but also boast quieter fabric construction. MD1648 can also be used, Kraton said, to improve PP modified household goods, automotive parts, hot melt adhesives and insulating materials.