Poly(ether ketone)s by Fluoride Catalyst Systems

Autor:	U. Hoffmann, Klaus Müllen, Markus Klapper, F Helmer-Metzmann
Rok vydání:	1994
Předmět:	chemistry.chemical_classification Heptane Condensation polymer Ketone Polymers and Plastics Organic Chemistry Ether Inorganic Chemistry Pentane chemistry.chemical_compound chemistry Nucleophile Polymer chemistry Materials Chemistry Nucleophilic substitution Organic chemistry Fluoride
Zdroj:	Macromolecules. 27:3575-3579
ISSN:	1520-5835 0024-9297
Popis:	KF or a mixture of KF and N-neopentyl-4-(dialkylamino)-pyridinium chlorides were used as catalysts to improve poly(ether ketone) syntheses of dichloroaryl monomers such as 1,4-bis(4-chlorobenzoyl)benzene (1) via nucleophilic displacement. Polymers of increased molecular weight within a significantly reduced reaction time can be obtained by this method, as demonstrated with condensations of 2,2-bis(4-hydroxyphenyl)pentane (4) or 2,2-bis(4-hydroxyphenyl)heptane (5) with 1. Furthermore, high molecular weight semicrystalline poly(ether ether ketone)s, commonly known as PEEKK, were synthesized by fluoride anion assisted polycondensation of 1
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::5a3fe614e1e262fbc477fea7a3d3cc6f https://doi.org/10.1021/ma00091a019 Zobrazit plný text záznamu