Polyether polyol, rigid polyurethane foam and processes for production thereof
US8236869B2 · kind B2 · utility
0Cited by
8References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 25, 2007 |
| Grant date | Aug 7, 2012 |
| Priority date | — |
| Expiry date | Aug 8, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2110/0083
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Highly-functionalized, low-viscosity polyether polyols are obtained by dehydration condensation reaction of alcohols.The polyether polyols are obtained by dehydration condensation of glycerin and monohydric and/or dihydric alcohol with the glycerin percentage being more than 50 mol % relative to 100 mol % of the total of the glycerin and alcohol. The glycerin may be crude glycerin obtained by hydrolysis or alcoholysis of natural fat and oils.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.