ISSN:
0360-6376
Keywords:
Physics
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Aromatic polypyrazoles were prepared by the cyclopolycondensation of branched bis-β-diketones with aromatic dihydrazines. The polymerizations were carried out at 100-150°C in m-cresol or a polar aprotic solvent like dimethyl sulfoxide to produce polymers with inherent viscosities up to 0.98 dl/g. These polypyrazoles were readily soluble in a wide range of solvents that included chloroform and exhibited 10% weight losses between 380 and 425°C in air and 370 and 500°C in nitrogen.
Additional Material:
2 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/pol.1981.170190614