Novel, fusible, liquid crystalline polyesters having lateral propargyloxy groups which undergo self-crosslinking in the liquid crystal phase at above their melting point are described. The polyesters are based on 2,5-bis (propargyloxy) terephtalic acid and 4,4'-dihydroxybiphenyl. The novel fusible polyesters may be used, for example, for materials having reinforcing properties.
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丙炔氧基的新型可熔液晶聚酯,这种聚酯在熔点以上的液晶相中会发生自交联。这种聚酯基于 2,5-双(
丙炔氧基)
对苯二甲酸和 
4,4'-二羟基联苯。这种新型可熔性聚酯可用于具有增强性能的材料等。