Polyurethane-based insulation board
US11745465B2 · kind B2 · utility
2Cited by
44References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 7, 2018 |
| Grant date | Sep 5, 2023 |
| Priority date | — |
| Expiry date | Jan 25, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/652
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
External thermal insulation composite systems described herein include a concrete or masonry wall and a multilayer thermal insulation board disposed on the concrete or masonry wall. The multilayer thermal insulation board includes at least one closed cell foam layer comprising polyurethane and polyisocyanurate having an open cell volume of less than 20% by volume according to ASTM D 6226 and at least one open cell foam layer comprising polyurethane and polyisocyanurate having an open cell volume of greater than 80% by volume according to ASTM D 6226.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.