Process for the preparation of polyol polymer dispersions
US6143802A · kind A · utility
10Cited by
39References
8Claims
0Family size
Assignee
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Key dates
| Filing date | May 14, 1999 |
| Grant date | Nov 7, 2000 |
| Priority date | — |
| Expiry date | May 14, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2110/0083
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polymer polyols and polymer-modified polyols having substantially no transition metal content in the polyol continuous phase may be prepared from encapsulative double metal cyanide complex-catalyzed polyoxyalkylene polyether base polyols without substantial removal of double metal cyanide complex catalyst residues from the base polyol and subsequent in situ polymerization of one or more polymerizable monomers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.