Fly ash and cinder strengthened thermoplastic
US7879939B2 · kind B2 · utility
7Cited by
21References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 29, 2007 |
| Grant date | Feb 1, 2011 |
| Priority date | — |
| Expiry date | Jun 11, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K2003/2206
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Strengthened thermoplastic materials use fly ash or cinders as extenders. The extended materials use fly ash or cinders that preferably contain no more than about 2% by weight of moisture. The thermoplastic materials are preferably foamed and extruded to form extruded closed cell foam articles, for example a window blind slat, shutter louver, shutter stile, or shutter frame. Thermoplastic materials formed with the fly ash or cinders can also be formed into non-foamed products or into pellets for use in later extruding to form products.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.