Esterification of rosin with pentaerythritol produces ester (RPE) which is widely used in paint, coating, and pressure-sensitive hot-melt adhesive industries. Although RPE has excellent valuable applications been industrially produced, studies on the reaction kinetics have not reported present literature. This work proposed a kinetic study synthesis by including series consecutive reactions for...

The aim of this study was to set up a chemometric procedure using near infrared spectra acquired with low-cost handheld spectrometer (SCiO), quantify the main chemical components maritime pine (Pinus pinaster) resin, in view SCiO as quality control tool for tapping industry. This carried out on samples resin harvested during summer 2018, Biscarosse, France. Spectral data were collected both an ...

Safety evaluation of certain food additives : seventy-first meeting of the Joint FAO/WHO Expert Committee on Food Additives. The designations employed and the presentation of the material in this publication do not imply the expression of any opinion whatsoever on the part of the World Health Organization concerning the legal status of any country, territory, city or area or of its authorities,...

the purpose of this study is to identify parameters influence on the particle deposition within fin and tube heat exchanger of air-conditioning systems by cfd analysis. first the basic sketch of periodic geometry drawn and meshing operation including boundary conditions was performed. then the gas side properties and flow parameters were solved by ansys fluent 14.5 software. lagrangian equation...

The title compound, also known as isopimaric acid, C(20)H(30)O(2), was isolated from slash pine rosin. There are two unique mol-ecules in the unit cell. The two cyclo-hexane rings have classical chair conformations. The cyclo-hexene ring represents a semi-chair. The mol-ecular conformation is stabilized by weak intra-molecular C-H⋯O hydrogen-bonding inter-actions. The mol-ecules are dimerized t...