Reaction conditions have been found which allow the synthesis of polyindanes with improved molar mass. The properties of four different polyindanes are described and compared with those of polyindanes with low molar mass from former investigations. The range of glass transition temperatures which can be achieved with polyindanes has been extended from − 10°C to 293°C. In addition, one of the newly snythesized polyindanes exhibits crystallinity with a melting point of 253°C. This is in sharp contrast to all other polyindanes investigated up to now, which were completely amorphous.
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Maier et al. (1992) studied this question.
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