TREATMENT OF FILAMENTS OR YARN IN ORDER TO IMPROVE THE ADHESION OF RUBBER

Title:

TREATMENT OF FILAMENTS OR YARN IN ORDER TO IMPROVE THE ADHESION OF RUBBER

Document Type and Number:

WIPO Patent Application WO/2014/074404

Kind Code:

A3

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.

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Inventors:

JAYCOX GARY DELMAR (US)
FELTON ERIC DIAZ (US)

Application Number:

PCT/US2013/067996

Publication Date:

August 28, 2014

Filing Date:

November 01, 2013

Export Citation:

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Assignee:

DU PONT (US)

International Classes:

D06M15/55; B05D1/18; B05D5/10; C09J5/02; C09J5/06; D06M15/564; D06M15/693

Foreign References:

EP0537462A1	1993-04-21
US20090142572A1	2009-06-04
US6740710B1	2004-05-25

Other References:

DATABASE WPI Week 201139, Derwent World Patents Index; AN 2011-G34629, XP002726090

Attorney, Agent or Firm:

STRICKLAND, Frederick, D. (Legal Patent Records CenterChestnut Run Plaza 721/2340,974 Centre Roa, PO Box 2915 Wilmington Delaware, US)

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