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:
Sep. 25, 2018
Filed:
Mar. 22, 2016
Evonik Degussa Gmbh, Essen, DE;
Pritesh G. Patel, Breinigsville, PA (US);
Judith Dolores Espinoza Perez, Longview, TX (US);
Gauri Sankar Lal, Whitehall, PA (US);
Jared Denis Bender, Breinigsville, PA (US);
Edze Jan Tijsma, BV Zeist, NL;
Evonik Degussa GmbH, Essen, DE;
Abstract
The disclosure relates to at least one partially reacted product of an isocyanate and an amine (e.g., a reaction product comprising at least one adducted compound). The reaction product comprises polyurea oligomers. The reaction product can be combined with at least one amine in order to formulate a curing agent for epoxy resins wherein the cured epoxy resin has enhanced fracture toughness. The at least partially reacted product does not increase the viscosity of the curing agent and is at least partially soluble in the amine component of the curing agent.