epoxide

The Immobilized Cu-Ni-Fe-Cr Layered Double Hydroxide on Silica-Layered Magnetite as a Reusable Mesoporous Catalyst for Convenient Conversion of Epoxides to 1,2-Diacetates

In this study, $Cu-Ni-Fe-Cr$ layered double hydroxide (LDH) immobilized on silica layered magnetite $({Fe}_{3}{O}_{4}@{SiO}_{2}@Cu-Ni-Fe-Cr \,  LDH)$ was investigated towards ring opening of diverse epoxides with acetic anhydride to afford vic-diacetates within 15–40 min in high yields. Reusability of the nano-LDH was also studied for 6 consecutive cycles without the significant loss of catalytic activity.

Influence of Initiators on the Adhesion Properties of Bitumen Modified by Natural Origin Epoxide

The article is presenting a modification of bituminous binder with ecological epoxidized rapeseed oil (BERO) in the presence of the initiator (hardener). Adipic acid (AA), maleic anhydride (MA) and polyethylene polyamine (PEPA) were used as the initiators. The effect of modification temperature and, as well as initiator nature, on the bitumen properties was determined. Bitumen modified with BERO was evaluated by the following indicators: softening temperature, penetration, ductility, and adhesion to the glass.

Effect of Modified Bitumen on Physico-Mechanical Properties of Asphalt Concrete

The investigation results of type B fine asphalt concrete and its form modified by rapeseed oil epoxide are represented. The efficiency of ERO addition and its positive effect on the physico-mechanical properties of asphalt concrete has been established.

Determination of Hydroxy Groups in the Modified Epoxy Oligomers Using IR-Spectroscopy

The use of IR-spectroscopy has been proposed to determine the content of hydroxy groups in the modified functional oligomers based on bisphenol A diglycidyl ether. Apart from hydroxy groups the investigated oligomers contain epoxy or peroxy, carboxy or acrylic groups.