Quality polymer foam from fluorinated alkene blowing agents
US8198340B2 · kind B2 · utility
3Cited by
3References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 10, 2008 |
| Grant date | Jun 12, 2012 |
| Priority date | — |
| Expiry date | Jun 20, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2325/06
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Alkenyl aromatic polymer foam comprising a polymer matrix containing one or more polymer and defining a plurality of cells having an average cell size wherein: (a) the alkenyl aromatic polymer foam has: —(i) an average cell size that is in a range of 0.02 and 5 millimeters; —(ii) a density of 64 kilograms per cubic meter or less; —(iii) an open cell content less than 30 percent; and —(iv) a cell size variation of 30% or less; and wherein the foam further comprises one or more fluorinated alkene blowing agent at a concentration of 0.03 moles or more and 0.3 moles or less per 100 grams of polymer foam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.