A two part study utilizing isotactic poly(4 -methyl-1-pentene) (PMP) was undertaken to investigate a three stage process (melt-extrusion/annealing/uniaxial-stretching) (MEAUS) to produce microporous films. In this report, the thermal annealing (second stage) and subsequent uniaxial-stretching (third stage) results of selected PMP films from three resins, labeled A, B & C, are discussed. From se...

The effects of reaction conditions on the yield ethylene and propylene from pentene cracking were investigated in a fixed-bed reactor at 500–750 °C for weight hourly space velocity (WHSV) 15–83 h−1. total reached maximum (67.8 wt%) 700 57 In order to explore mechanism high temperatures, thermal/catalytic proportion model was established. It found that feed chemically adsorbed with acid sites cr...

reaction between aromatic aldehydes and 3–methyl-1-phenyl-2-pyrazoline-5-one catalyzed by nano-sio2/hclo4 in water under reflux provided a simple and efficient route for the synthesis of 4-((5-hydroxy-3-methyl-1-phenyl-1h-pyrazol-4-yl)(aryl)methyl)-3-methyl-1-phenyl-1h-pyrazol-5-ol derivatives in high yields.

The title compound, C(33)H(18)F(6), has a V-shaped conjugated subunit. The dihedral angles between the central cyclo-pentene ring and the directly attached benzene rings are 32.7 (2) and 53.7 (2)°, respectively. The fluoro substituents are disordered, the occupancies refined to a 0.675 (2):0.325 (2) ratio.