Hydrofluoropropene blowing agents for thermoplastics
US8648123B2 · kind B2 · utility
18Cited by
6References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 3, 2012 |
| Grant date | Feb 11, 2014 |
| Priority date | — |
| Expiry date | Jan 3, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249953
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to blowing agent compositions comprising the unsaturated halogenated hydroolefin 3,3,3-trifluoropropene (HFO 1243zf) and combinations including primarily 3,3,3-trifluoropropene (HFO 1243zf). The blowing agent compositions are useful in that they provide sufficient plasticization to permit the production of low density insulating thermoplastic foams with improved k-factor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.