System and method for fabricating nanoparticle filler material dispersions and producing improved compounds containing hydrophobic plastic polymers
US11479657B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Jul 1, 2020 |
| Grant date | Oct 25, 2022 |
| Priority date | — |
| Expiry date | Jul 1, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L5/08
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A system and method of forming a plastic blend that includes nanoparticles of filler material evenly dispersed, without agglomeration of particles, throughout a hydrophobic polymer. A slurry is created that contains water and nanoparticles of a filler material. The filler materials are selected from a group consisting of crystalline cellulose, cellulose fiber, chitosan and chitin. A dispersion aid is provided that has a melting point in a temperature range. The slurry is heated and mixed to a temperature that is above the melt point range of the dispersion aid. The dispersion aid is added. The slurry is cooled to a temperature that is below the melting point of the dispersion aid. This causes the dispersion aid to solidify and entrap the nanoparticles within solid compound. The solid compound is dried and then reduced into a powder. The powder is the fill composition that is melt compounded for use.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.