ALEXANDRIA, Va., June 9 -- United States Patent no. 12,649,836, issued on June 9, was assigned to Borealis AG (Vienna).
"HMS PP foam sheet with good compressive strength and recoverability" was invented by Antti Tynys (Linz, Austria), Norbert Reichelt (Linz, Austria) and Yi An Lin (New Taipei City, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a foamed sheet consisting of a polypropylene composition comprising at least 85 wt. %, e.g. from 85 to 99.5 wt.-%, of a high melt strength polypropylene (HMS-PP) and 0.5 to 15 wt. % of a nucleating agent (NA), wherein the foamed sheet has a thickness of below 0.5 mm or a thickness of 2.0 mm or more. The present invention further ...