ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,479,948, issued on Nov. 25, was assigned to BYK-Chemie GmbH (Wesel, Germany).
"Ladder copolymer" was invented by Alexander Gers-Barlag (Wesel, Germany), Guillaume Jaunky (Wesel, Germany), Viktor Fertich (Wesel, Germany), Mark Heekeren (Sonsbeck, Germany), Mirco Suselbeck (Oberhausen, Germany) and Nadine Waschilowski (Krefeld, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a polymer comprising a) at least two polymer backbone chains and b) at least one polymeric connecting chain comprising at least two polyether segments and one polysiloxane segment, said polysiloxane segment having a number average molecular weight in th...