Foam insulation with improved low temperature properties
US10525663B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 28, 2017 |
| Grant date | Jan 7, 2020 |
| Priority date | — |
| Expiry date | Oct 13, 2037 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04D11/02
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A polyisocyanurate foam insulation product is produced from an isocyanate component, a polyol-containing component, and a blowing agent. The polyol-containing component comprises one or more polyols, a fire retardant, and one or more surfactants, and the polyisocyanurate foam insulation product has an R-value per inch of at least 5.7 when measured at 40° F. In some formulations, the polylol-containing component may include a fire retardant, a metallo-organic compound, or combinations thereof. The cell size of the foam may be less than 120 microns. The polyol-containing component may include a mixture of polyols having different functionalities.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.