Cellular structures and viscoelastic polyurethane foams
US9266996B2 · kind B2 · utility
11Cited by
13References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 5, 2012 |
| Grant date | Feb 23, 2016 |
| Priority date | — |
| Expiry date | Jun 17, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249953
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention discloses a structure comprising a plurality of three dimensional cells, wherein each cell comprises exterior walls defining an interior void wherein the walls comprise a plurality of struts and windows, the struts forming borders for the plurality of windows, wherein the struts have a plurality of pores. The present invention further discloses a viscoelastic foam having a ratio of elastic modulus (E′) at 20° C. to 25% compression force deflection (CFD) of 25 to 125.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.