Polymer nanocomposites for air movement devices
US7517930B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 7, 2005 |
| Grant date | Apr 14, 2009 |
| Priority date | — |
| Expiry date | Jul 13, 2026 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2300/603
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
In one embodiment, the invention provides an air movement device having a matrix polymer and nanoparticles. In another embodiment, the invention provides a method of manufacturing an air movement device having dry-mixing about 30% to about 80% by weight matrix polymer and about 2% to about 15% by weight layered clay to form a dry mixture, extruding the mixture to form a polymer nanocomposite, and molding the polymer nanocomposite into an air movement device. In yet another embodiment, the invention provides an air movement device having about 30% to about 80% by weight polypropylene, about 3% to about 10% by weight layered clay, and about 1% to about 10% by weight maleic anhydride grafted polystyrene, wherein the air movement device has a UL 94 5VA flame retardant rating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.