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Fluorination of polymers containing COOH/COOR-groups with SF4/HF, 2

✍ Scribed by Oskar Nuyken; Wolfgang Dannhorn; Werner Obrecht

Publisher
John Wiley and Sons
Year
1994
Tongue
English
Weight
382 KB
Volume
195
Category
Article
ISSN
1022-1352

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✦ Synopsis

Abstract

Carboxyl‐ and ester groups of low molecular‐weight compounds are selectively and quantitatively converted into trifluoromethyl moieties by reaction with SF~4~/HF as shown in a previous paper. This reaction is now applied to the polymers poly(acrylic acid), poly(acrylic esters) and poly[(acrylic acid)‐co‐(acrylic ester)]. Poly(acrylic acid) yields gelled products whereas poly(acrylic ester) and the copolymers yield highly fluorinated soluble polymers upon reaction with SF~4~/HF. Under mild reaction conditions the carbonyl groups in acrylic acid/acrylic ester copolymers are selectively fluorinated. Unter vigorous reaction conditions, acid as well as ester moieties of the copolymers are completely fluorinated. Macroscopic gelation during fluorination is most probably associated with intermolecular ether formation. Molecular weights, NMR spectra and glass transition temperatures of the reaction products are given.

📜 SIMILAR VOLUMES

Fluorination of polymers containing COOH
Fluorination of polymers containing COOH/COOR groups with SF4/HF, 1. Model reactions with low molecular weight compounds
✍ Oskar Nuyken; Wolfgang Dannhorn; Werner Obrecht 📂 Article 📅 1994 🏛 John Wiley and Sons 🌐 English ⚖ 311 KB

## Abstract Model studies with low molecular weight compounds are performed in order to evaluate the feasibility of synthesizing fluorine‐containing polymers by modification of commercially available products. The conversion of COOH and COOR into CF~3~ moieties by means of SF~4~/HF is checked wi