Power transmission belts prepared from polyimide and polyketone elastomers
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United States of America Patent
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Apr 9, 1991
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N/A
app pub date -
Jul 20, 1990
filing date -
Sep 2, 1988
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Expired
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Abstract
A polyimide having a repeating unit of the formula (I), (II), or (III): ##STR1## where LG is a linking group and W is an oligomeric chain selected from the group consisting of polyether, a polythioether, a polyetherthioether, polycarbonyl, or polysulfonyl, or a copolymer thereof.
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