Archives for Chemistry Experiments of 18959-30-3

One of the oldest and most widely used commercial enzyme inhibitors is aspirin, category: benzofuran, which selectively inhibits one of the enzymes involved in the synthesis of molecules that trigger inflammation. you can also check out more blogs about 18959-30-3

One of the major reasons for studying chemical kinetics is to use measurements of the macroscopic properties of a system, category: benzofuran, such as the rate of change in the concentration of reactants or products with time.In a article, mentioned the application of 18959-30-3, Name is 4,5-Difluorophthalic Anhydride, molecular formula is C8H2F2O3

Phenylethynyl terminated oligoimides derived from 3,3?,4,4?-diphenylsulfonetetracarboxylic dianhydride and their adhesive properties

A series of phenylethynyl terminated oligoimides based on 3,3?,4,4?-diphenylsulfonetetracarboxylic dianhydride (DSDA), m-phenylene diamine (m-PDA) or/and 1,4-bis(4-amino-2-trifluoromethylphenoxy)benzene (6FAPB) with calculated molecular weight of 5000 g mol-1 were synthesized. The effect of molecular structure on solubility and melt viscosity of oligoimides as well as the thermal properties of cured polyimide resins was investigated. Experimental results indicated that the oligoimides have good solubility in strong polar solvents to afford homogeneous solutions with the solid content as high as 50 wt%. The oligoimides exhibited better solubility and lower minimum melt viscosity at relatively lower temperature with the incorporation of flexible 6FAPB. These oligoimides could be thermally cured at 320-380 C to give thermosetted resins. The cured resins have good thermal stability with the glass transition temperatures of 278-329 C and the onset decomposition temperatures higher than 500 C. Adhesive properties of polyimides adhered to stainless steel at various conditions were evaluated by lap shear strength test. It was found that the LSS at room temperature increased with the molar ratio of 6FAPB increasing. The polyimides with combination of rigid and flexible structures exhibited good adhesive properties. With the increasing of curing temperature, the lap shear strength of polyimides at elevated temperature maintained at a high level due to the formation of strong bond.

One of the oldest and most widely used commercial enzyme inhibitors is aspirin, category: benzofuran, which selectively inhibits one of the enzymes involved in the synthesis of molecules that trigger inflammation. you can also check out more blogs about 18959-30-3

Reference£º
Benzofuran – Wikipedia,
Benzofuran | C8H2965O – PubChem