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:
Mar. 08, 2022
Filed:
Nov. 25, 2019
Covestro Llc, Pittsburgh, PA (US);
The University of Southern Mississippi, Hattiesburg, MS (US);
Alan Ekin, Coraopolis, PA (US);
Robson F. Storey, Hattiesburg, MS (US);
R. Hunter Cooke, III, Atlanta, GA (US);
Harrison A. Livingston, Hattiesburg, MS (US);
Covestro LLC, Pittsburgh, PA (US);
The University Of Southern Mississippi, Hattiesburg, MS (US);
Abstract
The present invention provides alternative polyurethane composition comprising the reaction product of an azidated polyol and a poly(alkynyl carbamate) prepolymer, wherein the poly(alkynyl carbamate) prepolymer comprises the reaction product of a polyisocyanate, an alkynol, and an oxysilane. The reaction of the polyol and the prepolymer may occur in the presence of a catalyst or at a temperature of from 20° C. to 120° C. The inventive oxysilane and azido-alkyne hybrid click formulations provide comparable performance, and in some cases better performance, to/than urethane and azido-alkyne control click formulations in terms of pencil hardness, MEK double rubs, and glass transition temperature. The inventive alternative polyurethane compositions may be used to provide coatings, adhesives, sealants, films, elastomers, castings, and composites.