Shelf life of polyol blends containing halogenated olefins by encapsulation of active components
US9556335B2 · kind B2 · utility
9Cited by
5References
12Claims
0Family size
Assignee
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Key dates
| Filing date | Jan 31, 2013 |
| Grant date | Jan 31, 2017 |
| Priority date | — |
| Expiry date | Apr 12, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2203/14
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The shelf life of polyurethane polyol pre-blends containing halogenated olefins is extended by encapsulation of active components such as catalysts and/or surfactants. The active component is encapsulated in a crystallizable or thermoplastic polymer. The encapsulated particles have a size of 2,800 microns or less and the active components are not significantly leaked out, particularly in the presence of halogenated olefins.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.