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:
Nov. 28, 2023
Filed:
Oct. 07, 2019
Covestro Llc, Pittsburgh, PA (US);
Matthew Stewart, Wexford, PA (US);
Joseph Pierce, Pittsburgh, PA (US);
Wendy S. Gustavich, Maynard, OH (US);
Michael Jeffries, Follansbee, WV (US);
Robert A. Wade, Oakdale, PA (US);
Myron W. Shaffer, New Cumberland, WV (US);
Covestro LLC, Pittsburgh, PA (US);
Abstract
A polyaspartate composition is provided which comprises a reaction product of a diamine and a diester reacted at a ratio of diamine equivalents to diester equivalents of from 1:0.95 to 1:0.50. The polyaspartate compositions of the invention may be combined with polyisocyanates to produce polyurea compositions, e.g., coatings, adhesives, sealants, composites, castings, and films, which exhibit a faster cure time along with faster development time for physical properties such as hardness and tensile strength.