Method of making masterbatches of liquid additives and, in particular, antimicrobial masterbatches
US6284814A · kind A · utility
Inventor
Key dates
| Filing date | Aug 31, 1998 |
| Grant date | Sep 4, 2001 |
| Priority date | — |
| Expiry date | Aug 31, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2467/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method for introducing relatively large quantities of liquid additives into polymer-containing composition includes increasing the free volume between polymer chains of the polymer(s) present in the composition and introducing at least one liquid additive into the free volume between the polymer chains. The method can optionally include the introduction of low melting additives into the polymer This method allows for the production of polymer masterbatchs from a wide variety of liquid additives that can contain upwards of 50% by weight active components. Such masterbatches can be a particularly useful technique for introducing biocides and/or antimicrobials into polymeric materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.