Studies on the blends of n-butylme thacrylate ethyl acrylate copolymers chlorinated rubber as top coat

The copolymers of n-butylmethacrylate-ethylacrylate were blended with chlorinated rubber in solution. The lacquers were formulated based on each blends and their utility as top coats on leather substrates were assessed. It was concluded that the blends resulted out of the above two polymer systems serve as the source for the formulation of top coats on leather substrate

Montmorillonite-catalysed regiospecific rearrangement of benzyl phenyl ether

301-30

Clay catalysed facile rearrangement of diazoaminobenzene to p-aminoazobenzene

187-18

2-(4-Chloro­phen­yl)-1,5-diphenyl-3-tosyl­imidazolidin-4-one

In the title compound, C28H23ClN2O3S, the central imidazolidine ring adopts a twisted conformation and the S atom has distorted tetra­hedral geometry. The crystal packing is stabilized by C—H⋯O, C—H⋯π and π–π inter­actions [centroid–centroid distance = 3.8302 (10) Å]

3-Ethyl-5-(4-meth­oxy­phen­oxy)-2-(pyridin-4-yl)-3H-imidazo[4,5-b]pyridine

In the title compound, C20H18N4O2, the imidazopyridine fused ring system is almost perpendicular to the benzene ring [dihedral angle = 87.6 (5)°]. The pyridine ring makes a dihedral angle of 35.5 (5)° with the mean plane of the imidazopyridine fragment. The crystal structure is stabilized by an aromatic π–π stacking inter­action between the phenyl rings of neighbouring mol­ecules [centroid–centroid distance = 3.772 (2) Å, inter­planar distance = 3.546 (2) Å and slippage = 1.286 (2) Å]

A Review on the Mechanical Modeling of Composite Manufacturing Processes

© 2016, The Author(s). The increased usage of fiber reinforced polymer composites in load bearing applications requires a detailed understanding of the process induced residual stresses and their effect on the shape distortions. This is utmost necessary in order to have more reliable composite manufacturing since the residual stresses alter the internal stress level of the composite part during the service life and the residual shape distortions may lead to not meeting the desired geometrical tolerances. The occurrence of residual stresses during the manufacturing process inherently contains diverse interactions between the involved physical phenomena mainly related to material flow, heat transfer and polymerization or crystallization. Development of numerical process models is required for virtual design and optimization of the composite manufacturing process which avoids the expensive trial-and-error based approaches. The process models as well as applications focusing on the prediction of residual stresses and shape distortions taking place in composite manufacturing are discussed in this study. The applications on both thermoset and thermoplastic based composites are reviewed in detail

Facile PTSH-catalysed Beckmann rearrangement of ketoximes in solid state

861-864<span style="font-size:12.0pt;font-family: " times="" new="" roman";mso-fareast-font-family:"times="" roman";mso-ansi-language:="" en-in;mso-fareast-language:en-in;mso-bidi-language:ar-sa"="" lang="EN-IN">Beckmann rearrangement of acetone oxime, acetophenone oxime and benzophenone oxime has been studied in the presence of para-toluenesulphonic acid as a solid catalyst. The rearrangement is found to proceed smoothly and under milder conditions. It is observed that in the case of benzophenone oxime, elevated temperatures favour rearrangement, while deoximation is predominant at room temperature. An explanation is presented and the mechanism is discussed.</span