Process for the manufacture of low molecular weight polyphenylene ether resins through redistribution
AssigneeGeneral Electric Company
InventorsAdrianus J. F. M. Braat, Hugo G. E. Engelbrecht, Juraj Liska
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Abstract
The invention relates to a novel process for the manufacture of functionalized polyphenylene ether resins through redistribution with a functionalized phenolic compound in the polyphenylene ether resin polymerization reaction solution without the addition of an added redistribution catalyst or promoter. The invention also relates to the functionalized polyphenylene ether resin made by the process as well as blends and articles containing the functionalized polyphenylene ether resin made by the process.
Claims24
A process to produce a functionalized polyphenylene ether resin, said process comprising:
- i. oxidative coupling in a reaction solution at least one monovalent phenol species using an oxygen containing gas and a complex metal catalyst to produce a polyphenylene ether resin and a backward dimer of the monovalent phenol species,
- ii. redistributing a functionalized phenolic compound into the polyphenylene ether resin in the reaction solution of step i without the addition of an added redistribution catalyst to form a functionalized polyphenylene ether resin, and
- iii. isolating the functionalized polyphenylene ether resin using a devolatilizing extruder.
A process to produce a functionalized polyphenylene ether resin, said process consisting essentially of:
- i. oxidative coupling in a reaction solution at least one monovalent phenol species using an oxygen containing gas and a complex metal catalyst to produce a polyphenylene ether resin and a backward dimer of the monovalent phenol species,
- ii. redistributing a functionalized phenolic compound into the polyphenylene ether resin in the reaction solution of step i without the addition of an added redistribution catalyst to form a functionalized polyphenylene ether resin, and
- iii. isolating the functionalized polyphenylene ether resin using a devolatilizing extruder.
Dependencies are inferred from the claim text.