ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,509,580, issued on Dec. 30, was assigned to SIKA TECHNOLOGY AG (Baar, Switzerland).
"Polymer containing silane groups" was invented by Andreas Kramer (Zurich, Switzerland), Marcel Oertli (Winterthur, Switzerland), Ursula Stadelmann (Zurich, Switzerland) and Sven Reimann (Zurich, Switzerland).
According to the abstract* released by the U.S. Patent & Trademark Office: "A silane group-containing polymer obtained from reacting (i) an isocyanate group-containing polymer having an NCO content in the range of 0.3 to 4% by weight and a monomeric diisocyanate content of at most 0.3 wt. % obtained from the reaction of at least one monomeric diisocyanate with at least one polyether polyol in a ...