Aromatic oxadiazole/N-methyl

Fiber Properties of Aromatic Oxadiazole/N-methyl Hydrazide Copolymers with Partial m-Phenylene Orientation... 

As shown in this paper, aromatic oxadiazole/N-methyl hydrazide copolymers with partial m-phenylene orientation give yarn with increased elongation-to-break and tire cord with improved fatigue resistance when compared to the all-para analogue. 

Whether ultimately the same high strength (18-21 gpd) as demonstrated for the latter (1) could be obtained with aromatic oxadiazole/N-methyl hydrazide copolymers of partial meta-orientation remains to be proven. 

A typical preparation of an aromatic oxadiazole/N-methyl hydrazide copolymer and fiber was conducted as follows ... 

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