Treatment of filaments or yarn
US9011975B2 · kind B2 · utility
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11References
5Claims
0Family size
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Key dates
| Filing date | Nov 9, 2012 |
| Grant date | Apr 21, 2015 |
| Priority date | — |
| Expiry date | Oct 16, 2033 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06M2101/36
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.