Catalysts for polyurethane foam polyol premixes containing halogenated olefin blowing agents
US9556303B2 · kind B2 · utility
13Cited by
17References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 20, 2012 |
| Grant date | Jan 31, 2017 |
| Priority date | — |
| Expiry date | Apr 10, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2375/08
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention provides polyurethane and polyisocyanurate foams and methods for the preparation thereof. More particularly, the invention relates to closed-celled, polyurethane and polyisocyanurate foams and methods for their preparation. The foams are characterized by a fine uniform cell structure and little or no foam collapse. The foams are produced with a polyol premix composition which comprises a combination of a hydrohaloolefin blowing agent, a polyol, a silicone surfactant, and a non-amine catalyst used alone or in combination with an amine catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.