Thermally Stable Polymers: Syntheses and Properties |
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Page 110
... 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 . Isothermal weight loss data reveal a ...
... 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 . Isothermal weight loss data reveal a ...
Page 124
... diamine is coagulated in water containing about 2 % sodium hydroxide and 1 % sodium sulfite . The diamine is obtained in 93 % yield and had a titrated amine equivalent of 216 and 189-191 ° C . The same technique is used to prepare ...
... diamine is coagulated in water containing about 2 % sodium hydroxide and 1 % sodium sulfite . The diamine is obtained in 93 % yield and had a titrated amine equivalent of 216 and 189-191 ° C . The same technique is used to prepare ...
Page 126
... diamine and 200 ml of dimethylacetamide . The diamine is allowed to dissolve and the solution then cooled to about 0 ° C . Maleic anhydride ( 9.8 g , 0.1 mol ) is added as a solid at such a rate as to keep the temperature below 15 ° C ...
... diamine and 200 ml of dimethylacetamide . The diamine is allowed to dissolve and the solution then cooled to about 0 ° C . Maleic anhydride ( 9.8 g , 0.1 mol ) is added as a solid at such a rate as to keep the temperature below 15 ° C ...
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