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:
Aug. 22, 2017
Filed:
Mar. 19, 2015
E I Du Pont DE Nemours and Company, Wilmington, DE (US);
Gary Delmar Jaycox, West Chester, PA (US);
Eric Diaz Felton, Elkton, MD (US);
E I DU PONT DE NEMOURS AND COMPANY, Wilmington, DE (US);
Abstract
A method for treating an aromatic polyamide filament or yarn to improve its adhesion to rubber wherein, the method comprises exposing the filament or yarn to a first mixture of reagents comprising multi-functional isocyanate oligomers and multi-functional epoxy oligomers, wherein the ratio of total isocyanate groups to total epoxy groups in the mixture is in the range of from 0.8 to 1.2, and heating the exposed filament or yarn to a temperature of at least 100 degrees C. whereby the epoxy and isocyanate oligomers cross-link and form a network on the surface of the filament or yarn.