Insulation boards and methods for their manufacture
US7838568B2 · kind B2 · utility
19Cited by
8References
37Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 1, 2003 |
| Grant date | Nov 23, 2010 |
| Priority date | — |
| Expiry date | Aug 1, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31551
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method of manufacturing a polyisocyanurate foam insulation board, the method comprising contacting a stream of reactants that comprise an isocyanate-reactive compound with a stream of reactants that include an isocyanate compound to form a reaction product, where the step of contacting takes place in the presence of a blowing agent and a low-boiling inert gas, and where the amount of low-boiling inert gas present at the time of the contacting is sufficient to result in frothing of the reaction product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.