Synthesis and Characterization of Poly(carbonates) and Poly(thiocarbonates) Derived from Diphenols Containing Germanium as a Central Atom
- 1 March 2005
- journal article
- Published by Taylor & Francis in Journal of Macromolecular Science, Part A
- Vol. 42 (3) , 301-308
Abstract
Poly(carbonates) and poly(thiocarbonates), containing germanium in the main chain and derived from the diphenols bis(4‐hydroxyphenyl)‐dimethyl‐germane, bis(4‐hydroxyphenyl)‐diethyl‐germane, and bis(4‐hydroxyphenyl)‐dibutyl‐germane reaction with phosgene and thiophosgene, respectively. The products were synthesized under phase transfer conditions, using two phase transfer catalysts. The products were characterized by spectroscopic methods. The results were evaluated by the yields and ηinh values which showed different behaviors for poly(carbonates) and poly(thiocarbonates). The yields and the ηinh values for the poly(carbonates) were low due to a hydrolytic process when the NaOH concentration was increased. For the poly(thiocarbonates) the phase transfer was effective and also there was an increase of both parameters when the NaOH concentration was increased, due to a salting out effect.Keywords
This publication has 9 references indexed in Scilit:
- Condensation polymers containing silicon and germanium in the main chainMacromolecular Symposia, 2003
- Synthesis and Characterization of Poly(carbonates) Derived from Diphenols That Contain Silicon or GermaniumJournal of Inorganic and Organometallic Polymers and Materials, 2003
- Synthesis and characterization of poly(esters) derived from diacids and diphenols containing silicon and germaniumEuropean Polymer Journal, 2003
- Polymerization by phase transfer catalysis. 27. Synthesis of polyesters containing silicon or germanium. Influence of the base concentrationInternational Journal of Polymeric Materials and Polymeric Biomaterials, 2003
- POLYMERIZATION BY PHASE TRANSFER CATALYSIS. 25. SYNTHESIS OF POLYCARBONATES AND POLYTHIOCARBONATES DERIVED FROM DIPHENOLS CONTAINING GERMANIUM AND SILICON IN THE MAIN CHAIN†Journal of Macromolecular Science, Part A, 2000
- Synthesis and Characterization of Poly(amides) Derived from Diamines with Germanium and SiliconJournal of Inorganic and Organometallic Polymers and Materials, 2000
- Polymerization by phase transfer catalysis—5. Polycarbonates from diphenols with aromatic side groupsEuropean Polymer Journal, 1987
- Polymerization by Phase Transfer Catalysis IV. Polythiocarbonates by Polymerization of Diphenols with ThiophosgenePolymer Journal, 1986
- Organometallic bis(p-hydroxyphenyl) derivatives of group IV elements and related compoundsJournal of Organometallic Chemistry, 1972