One of the major reasons for studying chemical kinetics is to use measurements of the macroscopic properties of a system, such as the rate of change in the concentration of reactants or products with time. 1895-39-2, Name is Sodium 2-chloro-2,2-difluoroacetate, formurla is C2ClF2NaO2. In a document, author is Han, So Hee, introducing its new discovery. COA of Formula: C2ClF2NaO2.
Synthesis and Properties of Polybenzoxazole Copolymers Having Non Linear Units
A series of poly(hyroxyamide)s (PHAs) was prepared by direct polycondensation reaction of 4,4′-(2,3-pyridinedioxy)dibenzoic acid and/or isophthalic acid with 3,3′-dihydroxybenzidine. The yield percentages of the products were high, and the inherent viscosities of the polymer in DMAc solution at 35 degrees C were 0.31-0.59 dL/g. All PHA polymers were found to be soluble in polar aprotic solvents such as DMAc, DMSO, NMP, and DMF. On the other hand, LiCl was required to dissolve IPHA-1 in aprotic solvents. Poly(benzoxazole)s (PBOs) were partially soluble in conc-H2SO4; IPBO-4, -5, and -6 were partially soluble in NMP only when LiCl was added to the solution, and the solution was heated. The PBO polymers showed a maximum weight loss in the temperature range of 654-680 degrees C, and the char yields at 900 degrees C under nitrogen atmosphere exceeded 63%.
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Reference:
Benzoxazole – Wikipedia,
,Benzoxazole | C7H5NO – PubChem