Process for production of polyols with hydroxide containing double metal cyanide (DMC) catalysts
US7034103B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 5, 2005 |
| Grant date | Apr 25, 2006 |
| Priority date | — |
| Expiry date | Jan 25, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G65/2663
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention provides process for producing polyols using a crystalline, hydroxide containing double metal cyanide (DMC) catalyst of the formulae (I) or (II),M1x[M2(CN)6]yOH.L (I)M1x[M2(CN)6]y.zM1(OH)q.L (II)wherein M1 represents a metal selected from Zn+2, Fe+2, Ni+2, Mn+2, Co+2, Sn+2, Pb+2, Fe+3, Mo+4, Mo+6, Al+3, V+4, V+5, Sr+2, W+4, W+6, Cu+2 and Cr+3, M2 represents a metal selected from Fe+2, Fe+3, Co+2, Co+3, Cr+2, Cr+3, Mn+2, Mn+3, Ir+3, Ni+2, Rh+3, Ru+2, V+4 and V+5, L represents an organic ligand and x, y and q are chosen to maintain electroneutrality. The polyols of the present invention may find use in the preparation of polyurethanes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.