Polyether polymers derived from 3,4-epoxy-1-butene
US5608034A · kind A · utility
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6References
4Claims
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Key dates
| Filing date | Sep 22, 1995 |
| Grant date | Mar 4, 1997 |
| Priority date | — |
| Expiry date | Sep 22, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G65/14
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polyether polymers obtained by the reaction or polymerization of 3,4-epoxy-1-butene in the presence of an onium iodide compound such as an ammonium or phosphonium iodide, an organotin compound such as a trihydrocarbyltin iodide, and a nucleophilic hydroxyl initiator compound. The polyether polymers comprise n units of residue (1) and m units of residue (2), wherein the total value of n+m is 2 to 70, m/(n+m) is greater than 0.75 and up to 0.98, and residues (1) and (2) have the structures: ##STR1##
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.