Method for preparing para-(2-hydroxyalkyloxy) styrene monomers and oligomers
US7199272B2 · kind B2 · utility
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19Claims
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Key dates
| Filing date | Feb 14, 2005 |
| Grant date | Apr 3, 2007 |
| Priority date | — |
| Expiry date | Nov 13, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F12/22
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A method for preparing p-(2-hydroxyalkyloxy)styrene monomers and oligomers is described. The method comprises a base-catalyzed reaction of a styrene ester, a suitable alcohol and an alkylene oxide in a single vessel reaction. In this method, the reactive p-hydroxystyrene is generated in situ via the base-catalyzed transesterification reaction between the styrene ester and the alcohol in the presence of the base catalyst. The p-hydroxystyrene formed reacts with the alkylene oxide to form the p-(2-hydroxyalkyloxy)styrene monomer or oligomer.
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