The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 26, 2022
Filed:
Nov. 25, 2019
Covestro Llc, Pittsburgh, PA (US);
The University of Southern Mississippi, Hattiesburg, MS (US);
Robson F. Storey, Hattiesburg, MS (US);
Alan Ekin, Coraopolis, PA (US);
R. Hunter Cooke, III, Atlanta, GA (US);
Jie Wu, Hattiesburg, MS (US);
Covestro LLC, Pittsburgh, PA (US);
The University Of Southern Mississippi, Hattiesburg, MS (US);
Abstract
An alternative polyurethane composition is provided which comprises a reaction product of an azidated polyol and a poly(alkynyl carbamate) prepolymer reacted at a temperature of from 20° C. to 120° C., wherein the poly(alkynyl carbamate) prepolymer comprises a reaction product of a polyisocyanate and a stoichiometric equivalent of an alkynol of the formula (I),HC≡C—RR—OH  (I),and wherein Ris an electron-withdrawing group selected from the group consisting of carbonyl, ester, amide, and urethane and Ris a linear or branched alkyl chain having from 1 to 15 carbon atoms. The inventive alternative polyurethane composition position may be used to provide adhesives, sealants, films, elastomers, castings, foams, and composites.