间甲基苯甲酰氯 、 三氯化铝 、 1,4-二氯苯 以Pure 2,5-dichloro-3'-methyl-benzophenone was isolated in 53% yield after the crude product的产率得到(2,5-Dichlorophenyl)(3-methylphenyl)methanone
Rigid-rod and segmented rigid-rod polymers, methods for preparing the polymers and useful articles incorporating the polymers are provided. The polymers incorporate rigid-rod backbones with pendant solubilizing groups attached thereto for rendering the polymers soluble.
The present invention relates to a process for orienting the polymer molecules of an article comprising specific rigid-rod polymers by heating and stretching the article.
本发明涉及一种工艺,通过加热和拉伸由特定硬棒聚合物组成的物品,使该物品的聚合物分子定向。
RIGID-ROD POLYMERS
申请人:MISSISSIPPI POLYMER TECHNOLOGIES, INC.
公开号:EP0629217B1
公开(公告)日:2003-05-07
Membrane-electrode structure for solid polymer fuel cell and solid polymer fuel cell