Polish version

Login form

register


Print

A. Dworak, R.C. Schulz


Polymerization of oxazolines initiated with chloroformates


Polimery 1992, No 7, 325


DOI: dx.doi.org/10.14314/polimery.1992.325

Summary

The mechanism of initiation of cationic polymerization of oxazolincs was discussed with particular stress to the application of alkyl chloroformatcs as initiators. On the example of 2-methyloxazoline and 2-phenyloxazoline polymerization initiated with methyl chloroformate it was proved that the rate constans of polymerization increase in the presence of potassium iodide or a silver salt of trifluoromethanesulphonic acid (AgOTf). Star-like polymers with Tyree branches were obtained in polymerization of the above monomers initiated with chloroformate of 2,2-bis-hydroxymethylbutanol-l in the presence of KI Or AgOTf. The method of preparation of block copolymers of oxazolincs and ethylene oxide by initiation with macro-initiators (a,w-dichloroformates of polyoxyethylene glycols) also in the presence of KI or AgOTf was described, too.


If you are interested in full versions of articles, please contact the editorial team of polimery@ichp.pl