Method for making polymer feedstock usable for generation of fiber having anti-microbial properties
US9878480B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 24, 2015 |
| Grant date | Jan 30, 2018 |
| Priority date | — |
| Expiry date | May 18, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2367/03
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of making synthetic polymer pellet feedstock having a high concentration of an anti-microbial agent includes the steps of: introducing a polymer into a mixing vessel; introducing a polysiloxane dispersant into the mixing vessel; introducing an anti-microbial agent comprised of a powdered metal material into the mixing vessel; heating and mixing the polymer, the polysiloxane dispersant and the anti-microbial agent to form a molten blend that exhibits a generally homogenous dispersal of the anti-microbial agent; extruding the molten blend to form filaments; and cutting the filaments to form metalized synthetic polymer pellet feedstock. The powdered metal material includes particles of silver in metallic or salt form measuring between about 2 micrometers and about 12 micrometers and particles of copper in metallic or salt form measuring between about 2 micrometers and about 12 micrometers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.