Composite material
US9475259B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 1, 2011 |
| Grant date | Oct 25, 2016 |
| Priority date | — |
| Expiry date | Apr 9, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/647
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A composite material has a polymeric upper layer which is connected via at least one adhesive layer to a substrate. The substrate is predominantly or entirely formed by an open-cell polyurethane foam onto which the upper layer, containing between 2 and 12 wt % of polysiloxane, is bonded by an adhesive layer. An intermediate layer or a double layer, i.e. a composite of the intermediate layer with a bonding layer located between the substrate and the intermediate layer, is provided between the upper layer and the substrate as the adhesive layer for joining the upper layer and the substrate. The regions of the substrate into which the polyurethane dispersion of the adhesive layer has penetrated in a controlled manner during application have a density which is between 12% and 48%, above the density of the regions of the substrate without the adhesive layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.