Electric Literature of 18959-30-3, Because a catalyst decreases the height of the energy barrier, its presence increases the reaction rates of both the forward and the reverse reactions by the same amount.18959-30-3, Name is 4,5-Difluorophthalic Anhydride, molecular formula is C8H2F2O3. In a article£¬once mentioned of 18959-30-3
Synthesis and study of the properties of thermoset oligoimides with propargyl fragment
A series of thermoplastic oligoimides with a propargyl substituent in the side chain was synthesized by the method of high-Temperature catalytic copolycondensation in the melt of benzoic acid based on the monomer 5-(2-propyn-1-yloxy) benzene-1,3-diamine (PBD), 2,2-bis-[(3,4-di-carboxyphenoxy)phenyl]propane dianhydride (BPADA), 2,2-bis-[(4-Aminophenoxy)phenyl]propane (BAPP) and phthalic anhydride (PA). The uncured imide oligomers showed good solubility (>20 wt% in N-methyl-2-pyrrolidone), wide temperature processing window (>50C) and also flow well at 220C. These imide oligomers were successfully converted to cross-linked structures after curing at 300C. Cross-linked oligomers have a temperature of 5% weight loss >500C and Tg >200C.
A reaction mechanism is the microscopic path by which reactants are transformed into products. Each step is an elementary reaction. In my other articles, you can also check out more blogs about 18959-30-3
Reference£º
Benzofuran – Wikipedia,
Benzofuran | C8H2941O – PubChem