Process for the preparation of polyphenol derivatives and dermatives obtained thereby
US4647642A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 4, 1985 |
| Grant date | Mar 3, 1987 |
| Priority date | — |
| Expiry date | Mar 4, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G77/46
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to a process for the preparation of polyphenol derivatives, new derivatives obtained by this process and their use in the preparation of polymers and copolymers. This process consists of reacting a polyphenol with 1-allyloxy-2,3-epoxypropane of formula: ##STR1## in the presence of a catalyst constituted by a tertiary amine or an alkali hydroxide to obtain a polyphenol derivative having two reactive functions, i.e. allyl and hydroxyl at each end. Preferably, the phenols used are bisphenol A, bisphenol A derivatives, such as polysulphones or polycarbonates and phenol-formaldehyde resins. The derivatives obtained in this way having two reactive functions of different types at each end of their chain (hydroxyl and allyl) can participate in polymerization, copolymerization and/or crosslinking reactions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.