An eco-compatible pathway to new hydrotropes from tetraols
作者:Aurélien Herbinski、Estelle Métay、Eric Da Silva、Estelle Illous、Jean-Marie Aubry、Marc Lemaire
DOI:10.1039/c7gc02990j
日期:——
hydrogenolysis. Acetalisation, with the corresponding aldehyde, gave rise to 69% to 91% isolated yields of erythritol acetals, and 63% to 79% yields of pentaerythritolacetals. Hydrogenolysis of these acetals was performed resulting in good yields of erythritol (72% to 86%) and pentaerythritol (78% to 83%) derivatives. The physico-chemical analysis of these ethers was realized using DSC and TGA analysis
Acid-Catalyzed Reactions of Epoxides for Atmospheric Nanoparticle Growth
作者:Wen Xu、Mario Gomez-Hernandez、Song Guo、Jeremiah Secrest、Wilmarie Marrero-Ortiz、Annie L. Zhang、Renyi Zhang
DOI:10.1021/ja508989a
日期:2014.11.5
acid nanoparticles of 4-20 nm are exposed to epoxide vapors, dependent on the particle size and relative humidity. Composition analysis of the nanoparticles after epoxide exposure reveals the presence of high molecular weight organosulfates and polymers, indicating the occurrence of acid-catalyzedreactions of epoxides. Our results suggest that epoxides play an important role in the growth of atmospheric
STABILIZER COMPOUND, LIQUID CRYSTAL COMPOSITION, AND DISPLAY ELEMENT
申请人:DIC CORPORATION
公开号:US20180230094A1
公开(公告)日:2018-08-16
The present invention provides a compound represented by General Formula (I). The compound according to the present invention prevents the liquid crystal composition from being deteriorated due to light, has high compatibility with the liquid crystal composition, and does not impair the storage stability of the liquid crystal composition, thus the compound is useful as a constituent member of a liquid crystal composition. Since the liquid crystal composition and the liquid crystal display element containing the compound of the present invention exhibit UV resistance and have a high VHR, it is possible to obtain a liquid crystal display element with excellent display quality in which display defects such as burn-in and display unevenness do not occur or are suppressed.
C4 alditols are alternative of sweetener, as well as significant pharmaceutical and chemical intermediates, which are mainly obtained through the fermentation of microorganism currently. Similarly, as a bulk chemical, C2 alditol plays a decisive role in chemical synthesis. However, among them, few works have been focused on the chemical production of C4 alditol yet due to its difficult accumulation.