Thermally Stable Polymers: Syntheses and Properties |
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Page 181
... oxadiazole ) -1,3 - phenylene- diyl - 2,5- ( 1,3,4 - oxadiazole ) ] [ 98 ] The polyhydrazide precursor is prepared by the method of Frazer and Wallenberger [ 41 ] . The dried N N - N || N ။ C polyhydrazide is ground to a fine powder ...
... oxadiazole ) -1,3 - phenylene- diyl - 2,5- ( 1,3,4 - oxadiazole ) ] [ 98 ] The polyhydrazide precursor is prepared by the method of Frazer and Wallenberger [ 41 ] . The dried N N - N || N ။ C polyhydrazide is ground to a fine powder ...
Page 187
... Oxadiazole polymers containing boron , phosphorous , silicon , or iron have been synthesized . Boron , as carborane , was incorporated by Korshak et al . [ 83 ] by copolymerization of 1,2- and 1,7 - bis ( 4 - hydrazinocarbonyl- phenyl ) ...
... Oxadiazole polymers containing boron , phosphorous , silicon , or iron have been synthesized . Boron , as carborane , was incorporated by Korshak et al . [ 83 ] by copolymerization of 1,2- and 1,7 - bis ( 4 - hydrazinocarbonyl- phenyl ) ...
Page 389
... oxadiazoles ) , 190 Poly ( 1 , 3 , 4 - oxadiazoles ) , 143 , 179 Poly ( oxadiazole - amides ) , 187 Poly ( 1,2,5 - oxadiazole - N - oxide ) , 144 Poly ( oxadiazole silane ) , 302 Polyoxamides , 68 , 80 Polyoxazoles , 143 , 158 Phenyl ...
... oxadiazoles ) , 190 Poly ( 1 , 3 , 4 - oxadiazoles ) , 143 , 179 Poly ( oxadiazole - amides ) , 187 Poly ( 1,2,5 - oxadiazole - N - oxide ) , 144 Poly ( oxadiazole silane ) , 302 Polyoxamides , 68 , 80 Polyoxazoles , 143 , 158 Phenyl ...
Common terms and phrases
acetone added air or nitrogen aliphatic amide amine anhydride aramids aromatic backbone benzene C. S. Marvel carborane CH₂ CH3 CH3 CH3 Chem chloride chloroform condensation cooled copolymer crosslinking crystalline cyclization decomposition diamine dianhydride dl/g DMAC DMSO dried ether fibers films filtration functions groups heated Hergenrother heterocyclic HMPA hydrazide Imai imide inherent viscosity intermediate intrinsic viscosity isolated isothermal Japan Patent ladder m-cresol m-or Macromol materials melt methanol Method mixture is stirred mmol modulus molecular weight monomer NH-C NH2 NH2 NH2 nitrogen oxadiazole oxide P. M. Hergenrother phenyl phenylene poly polyhydrazide polyimides polymerization polyoxadiazoles postcure poured precipitate the polymer Preprints properties pyridine reaction reflux ring room temperature siloxane sodium solid soluble solution solvent structure sulfone sulfuric acid synthesized tensile strength tetraamines thermal stability thiadiazole tion triazole U.S. Patent vacuo vacuum washed weight loss yellow yield