High density polyurethane and polyisocyanurate construction boards and composite boards
US8453390B2 · kind B2 · utility
12Cited by
42References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 30, 2008 |
| Grant date | Jun 4, 2013 |
| Priority date | — |
| Expiry date | Jun 28, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31551
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A construction board comprising a cellular body including at least one planar surface, where the cellular body includes a polyurethane or polyisocyanurate cellular structure, where the cellular structure has a density greater than about 2.5 pounds per cubic foot, an ISO index of at least 270, and where the cellular body includes at least 5.0% by weight flame retardant based on the weight of the cellular body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.