Method for making polymer surfaced composites
US6709717B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 15, 2002 |
| Grant date | Mar 23, 2004 |
| Priority date | — |
| Expiry date | Mar 21, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31855
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
To produce a composite building unit having a polymer-cladded surface, a polymerizable resin binder and a blend of filler particles are combined to provide a resin binder/filler mixture which is deposited in a mold. A concrete substrate is then positioned in the mold with a face surface contacting a transition layer comprising a lightly filled resin binder/filler layer portion of the deposited mixture overlying a highly filled resin binder/filler layer portion of the deposited mixture. The resin binder in the transition layer migrates into pockets and pores in the substrate face surface to create mechanical locks when the resin binder is cured. These locks, in addition to chemical bonding, serve to permanently affix the cured resin binder as a surface cladding to the substrate. Initiators may be added to the resin binder to promote thermal and/or UV radiation cures thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.