摘要:
Compositions comprising a diester or polyester, e.g., 1,4-butylene dibenzoate or poly(1,4-butylene terephthalate) in combination with an organic carbonate or polycarbonate, e.g., diphenyl carbonate or poly(bisphenol-A carbonate), are stabilized with boric acid.
摘要:
Dimethyl carbonate is obtained pure, from its solutions in methanol, by extractive distillation carried out with a temperature of from 60.degree. C. at the top to 250.degree. C. at the bottom of the column and employing, as the extractant, an aprotic organic liquid which is substantially inert toward dimethyl carbonate, boils at above 100.degree. C. at standard pressure, is miscible with dimethyl carbonate in all proportions and has a dielectric constant .epsilon. of from 4 to 90 and a dipole moment .mu. of from 1.5 to 5 Debye.
摘要:
Process for the solvent extraction of liquids mutually immiscible with each other and having different specific gravity, in which both the mother liquor and the solvent(s) are dispersed in a gas or vapour, thereafter the disperse state of the system is terminated by condensation, and the immiscible phases are separated from each other.
摘要:
A method to remove impurities from the oxygenated organic compounds methylphenol ether, diethylcarbonate, butyrolactone and 4-methyl-1,3-dioxolan-2-one by selectively complexing the impurity with a halide of an alkaline earth metal and then removing the so-complexed impurity from the oxygenated compound.
摘要:
A METHOD OF INHIBITING THE POLYMERIZATION OF DIALLYL DIGLYCOL CARBONATE BY THE ADDITION THERETO OF VARIOUS AMINIUM AND DIIMONIUM SALTS AND THE PRODUCTS PRODUCED THEREBY ARE DISCLOSED.
摘要:
The present invention addresses to a process for producing olefins and esters in the C10 to C13 range from fatty acid esters through a catalytic hydrogenation reaction followed by cross-metathesis of the hydrogenated product with light olefins.
摘要:
Provided herein is a method of preparing a heterogeneous linear carbonate, including: performing a transesterification reaction of dimethyl carbonate (DMC) and ethanol (EtOH) in the presence of a catalyst; and filtering a composite obtained by the transesterification reaction through a filter.
摘要:
The presently claimed invention relates to a process for purification of aroma compounds by distillation. Specifically, it relates to a process for purification of carbonic esters of formula (I) using a combination of distillative processes.