Thermally Stable Polymers: Syntheses and Properties |
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Page 29
... Polyphenylene , Polybenzyl , and Poly ( p - xylylene ) Polymer Polyphenylene Polybenzyl Structure Ar - Ar ' Ar Ar Comments Intractible when unsubstituted . Lubricants , ablatives , graphite precursors . Stable to 500 ° C / air ...
... Polyphenylene , Polybenzyl , and Poly ( p - xylylene ) Polymer Polyphenylene Polybenzyl Structure Ar - Ar ' Ar Ar Comments Intractible when unsubstituted . Lubricants , ablatives , graphite precursors . Stable to 500 ° C / air ...
Page 33
... polyphenylene is then added and the reaction is held at 100 ° C for 24 hr . The black mixture is cooled to room temperature and poured over ice . The black solid is isolated by suction filtration and washed well with water and dried in ...
... polyphenylene is then added and the reaction is held at 100 ° C for 24 hr . The black mixture is cooled to room temperature and poured over ice . The black solid is isolated by suction filtration and washed well with water and dried in ...
Page 40
... polyphenylene via diradical coupling [ 36 ] . This method was also applicable to analogs such as the biphenylene ether , methane , sulfone , sulfide , and amine . A highly crosslinked polyphenylene was produced by the cyclization ( at ...
... polyphenylene via diradical coupling [ 36 ] . This method was also applicable to analogs such as the biphenylene ether , methane , sulfone , sulfide , and amine . A highly crosslinked polyphenylene was produced by the cyclization ( at ...
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