Long-lasting water-repellent textile treatment process using UV-curable polydimethylsiloxane-containing polyurethane system
US8900673B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Mar 21, 2013 |
| Grant date | Dec 2, 2014 |
| Priority date | — |
| Expiry date | Mar 22, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/218
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A long-lasting water-repellent textile treatment process using a curable polydimethylsiloxane (PDMS)-containing polyurethane (PU) system includes the steps of mixing a di-isocyanate with a PDMS-containing material, and reacting the di-isocyanate with the PDMS-containing material to form an NCO-terminated PDMS-containing PU system. The treatment process obtains a long-lasting water-repellent textile, which overcomes the shortcomings in hand feel, washing durability, and breathability of the conventional water-repellent textile, while having the advantages of low cost and of being an environmentally friendly process, while also providing useful and practical industrial applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.