Syntheses and reactions of uniform size poly(dimethylsiloxane) with various reactive end groups

Abstract

The reaction of monofunctional living poly(dimethylsiloxane), poly(DMS), with dimethylchlorosilane (2), followed by the hydrosilation of the polymer end SiH group with allyl alcohol was performed. The hydroxyl end group of pol(DMS) (4) thus obtained was subsequently converted to the tosylate ester group through treatment with tosyl chloride inthe presence of 4-dimethylaminopyridine (DMAP). The tosylate ester end group of poly(DMS) (5) was found to initiate the cationic ring opening polymerization of 2-methyl-2-oxazoline (OXZ) to produce the poly(DMS)/poly(OXZ) block copolymer (7). © 1987 The Society of Polymer Science, Japan.