Thermally Stable Polymers: Syntheses and Properties |
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Page 73
... amine , pyridine being the only good amine . Most di- or triarylphosphite or phosphinites are suitable for high yields ( 95-100 % ) and viscosities ( 1.05-1.48 d1 / g ) , whereas trialkylphosphites give no polymer . This method is also ...
... amine , pyridine being the only good amine . Most di- or triarylphosphite or phosphinites are suitable for high yields ( 95-100 % ) and viscosities ( 1.05-1.48 d1 / g ) , whereas trialkylphosphites give no polymer . This method is also ...
Page 100
... amine . However , other dian- hydrides gave lower Tg's which can be affected by amine structure . With the diphenylether diamine , the following results are obtained : [ 10.00.0 ] where X is : Tg is L 100 Polyimides and Analogs Thereof ...
... amine . However , other dian- hydrides gave lower Tg's which can be affected by amine structure . With the diphenylether diamine , the following results are obtained : [ 10.00.0 ] where X is : Tg is L 100 Polyimides and Analogs Thereof ...
Page 110
... amine structure , regardless of diamine incorporated . Glass transition temperatures are dependent on amine , however , and range from 140 ° C for the hexamethylene diamine polymer to 320 ° C for the diphenylene methane material ...
... amine structure , regardless of diamine incorporated . Glass transition temperatures are dependent on amine , however , and range from 140 ° C for the hexamethylene diamine polymer to 320 ° C for the diphenylene methane material ...
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