| 摘要 |
Homo- or copolyoxymethylenes are described and contain the repeat structural unit of formula I <?in-line-formulae description="In-line Formulae" end="lead"?>-A-O-R<SUP>1</SUP>-O-CO-(R<SUP>2</SUP>-CO-)<SUB>m</SUB>-O- (I), <?in-line-formulae description="In-line Formulae" end="tail"?> where A is a radical derived from a homo- or copolyoxymethylene, R<SUP>1 </SUP>is an alkylene radical having at least two carbon atoms, or a cycloalkylene radical, R<SUP>2 </SUP>is a direct carbon-carbon bond, or an alkylene, cycloalkylene, arylene, or aralkylene radical, and m is 0 or 1. These polymers may be prepared by reacting end-group-functionalized homo- or copolyoxymethylenes with selected chain-linking agents. The reaction products can be used to produce moldings.
|
