Thermally Stable Polymers: Syntheses and Properties |
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Page 52
... monomer , Hercules ) and bicyclo- [ 2.2.1 ] -7- oxoheptane . The products are low molecular weight ( 6000 ) , white , very soluble powders ; but of course the thermal and oxidative stability is less- ened by inclusion of aliphatic units ...
... monomer , Hercules ) and bicyclo- [ 2.2.1 ] -7- oxoheptane . The products are low molecular weight ( 6000 ) , white , very soluble powders ; but of course the thermal and oxidative stability is less- ened by inclusion of aliphatic units ...
Page 275
... monomer mixture also is very important to the speed of the reaction , uniformity of the product , and necessary ... Monomer mixtures Equimolar amounts of monomers can be ballmilled ; however , a high - speed , nonsolvent liquid blending ...
... monomer mixture also is very important to the speed of the reaction , uniformity of the product , and necessary ... Monomer mixtures Equimolar amounts of monomers can be ballmilled ; however , a high - speed , nonsolvent liquid blending ...
Page 304
... monomer equivalent to 0.5 mol % of the original stoichiometric quantity . The reaction is continued for 0.5 hr , and a small aliquot is removed for inherent viscosity determination . An additional 0.5 mol % aminosilane is added to the ...
... monomer equivalent to 0.5 mol % of the original stoichiometric quantity . The reaction is continued for 0.5 hr , and a small aliquot is removed for inherent viscosity determination . An additional 0.5 mol % aminosilane is added to the ...
Common terms and phrases
acetone added air or nitrogen aliphatic amide amine anhydride aramids aromatic backbone benzene C. S. Marvel carborane CHâ‚‚ 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