Treatment of filaments or yarn

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United States of America Patent

PATENT NO 9739008
SERIAL NO

14662275

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Abstract

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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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Patent Owner(s)

Patent OwnerAddress
DUPONT SAFETY & CONSTRUCTION INC974 CENTRE ROAD WILMINGTON DE 19805

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Felton, Eric Diaz Elkton, US 5 19
Jaycox, Gary Delmar West Chester, US 36 338

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