Dyed synthetic fiber comprising silver-substituted zeolite and copper compound, and process for preparing same
US5180402A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 3, 1991 |
| Grant date | Jan 19, 1993 |
| Priority date | — |
| Expiry date | May 3, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/25
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A dyed synthetic fiber having antibacterial and antifungal properties is described, which contains 0.01 to 20 weight % of a silver-substituted zeolite and 0.001 to 1.0 weight % of a substantially water-insoluble copper compound. The copper compound is present independent of zeolite particles in the fiber. The dyed synthetic fiber is prepared by incorporating a silver-substituted zeolite in a monomer or a polymerization mixture before the completion of polymerization in the step of preparing a polymer for the fiber; further incorporating the copper compound in the polymer before the spinning thereof into a fiber; spinning the polymer into a fiber; and dyeing the fiber. The dyed fiber retains a high level of antibacterial and antifungal properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.