Ytterbium(III) acetylacetonate as a catalyst for the preparation of aliphatic oligocarbonate polyols
US7060778B2 · kind B2 · utility
4Cited by
7References
9Claims
0Family size
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Key dates
| Filing date | May 10, 2004 |
| Grant date | Jun 13, 2006 |
| Priority date | — |
| Expiry date | May 10, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G64/305
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Ytterbium(III) acetylacetonate is used as a catalyst for the preparation of aliphatic oligocarbonate polyols by transesterification of at least one organic carbonate with at least one aliphatic polyol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.