Polyolefin antimicrobial compositions and melt-processing methods
US8338514B2 · kind B2 · utility
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5References
22Claims
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Key dates
| Filing date | Dec 19, 2008 |
| Grant date | Dec 25, 2012 |
| Priority date | — |
| Expiry date | Apr 24, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K3/30
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A melt-processed polyolefin composition or composite includes a polyolefin compounded with a hindered amine light stabilizer, an organodisulfide antioxidant, and silver sulfate as an antimicrobial agent. A process of preparing such a composite includes compounding all of the compounds in various orders as long as the silver sulfate is added after the hindered amine light stabilizer is added to the polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.