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HIGH FLOW, HYDROGENATED STYRENE-BUTADIENE-STYRENE BLOCK COPOLYMERS AND APPLICATIONS

The invention relates to unique applications for novel high melt flow, low viscosity, selectively hydrogenated styrene-butadiene-styrene (hSBS) or selectively hydrogenated controlled distribution styrene-butadiene/styrene-styrene (hSBSS) block copolymers, wherein the melt flow rate of said block copolymer is at least 100 g/10 min at (230°C / 2.16 kg) according to ASTM D1238. These block copolymers have exceptionally high melt flow rate while also possessing high strength and elasticity. The inventive styrenic block copolymers have applications that prior to the present invention were not normally possible due to the normal low melt flow rate of styrenic block copolymers. The present invention also encompasses various fields of use such as a fiberglass hSBS or hSBSS reinforced mat, low viscosity hSBS or hSBSS coatings for industrial uses, hot melt adhesives prepared from hSBS or hSBSS blended with polyalpha-olefins, and elastic film, fiber, and nonwoven constructions using hSBS or hSBSS.


» Number: EP3381953A1 (A1)

» Publication Date: 18//2/03/1

» Applicant: KRATON POLYMERS US LLC?[US]

» Inventor: FLOOD JOHN?[US]; WRIGHT KATHRYN?[US] (5)

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This project has received funding from the European Union Seventh Framework Programme (FP7/2007-2013) under grant agreement n° [609149].

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