Abstract:
A method for preparing esters from isohexide compounds, and a means by which color bodies that may be made in situ during esterification of isohexide compounds are either prevented from forming or their amounts are minimized in the resultant product mixture are described.
Abstract:
In the process of distilling a polyol product mixture including one or both of a biobased propylene glycol and a biobased ethylene glycol from the reaction of hydrogen with a biobased feed, it has been discovered that undesirable epoxides can form, and the present invention provides means for guarding against their formation, for removing epoxides which do form by particular methods of distilling, and for removing the epoxides from a finished, otherwise commercially acceptable biobased glycol product.
Abstract:
The present disclosure is directed to compositions having lecithin and an organic acid and related methods. The disclosed compositions may also include one or more co-surfactants such as anionic surfactants and/or non-ionic surfactants, and may be used as a dispersant.
Abstract:
The present disclosure is directed to compositions having lecithin and an organic acid and related methods. The disclosed compositions may also include one or more co-surfactants such as anionic surfactants and/or non-ionic surfactants, and may be used as a dispersant.
Abstract:
A process for preparing furanic mono- and/or di-sulfonate molecules from the reduction products of HMF, in particular, from either 2,5-bis-hydroxymethyltetrahydrofurans (THF-diols) or furan-2,5-dimethanol (FDM) under relatively mild conditions is described. The process involves reacting THF-diols or FDM with at least a sulfonate species, and a reagent of either 1) a nucleophilic base or 2) combination of a non-nucleophilic base and a nucleophile, as two separate reagents. The furanic sulfonates synthesized according to the process and some of the associated compounds that can be derivatized from the sulfonates are also provided.
Abstract:
A process for recovering and using an carboxylic acid derived from a fermentation broth by means of making an ester of the free carboxylic acid and alcohol in carbon dioxide (CO2) without the presence of any other acid catalyst at a reaction temperature and pressure that corresponds to supercritical, critical or near critical conditions for the alcohol and/or CO2 is described. The process can constitute part of a general process of refining carboxylic acids derived from a fermentation broth for use in the production of a variety of chemical compounds, such as C4 platform compounds, polymers, or fuels.
Abstract:
A method of making a mono-ether of an isohexide and art assemblage of novel. Song-chain isohexide mono-ethers are described. In particular, the method involves reacting an isohexide stereoisomer with a Bronsted base and an alkyl species. The resultant mono-ethers can serve as attractive antecedents or chemical scaffolds for making a derivative compound, such as various amphiphiles with potential uses as surfactants, dispersants, and lubricants, among others.
Abstract:
Esters and a process for making esters from organic acids by means of reacting a carboxylic acid with dialkylcarbonate in an alcohol-containing solvent without any extrinsic acid or base catalyst is described. A benefit of the preparation process is that it can make the separation and extraction of ester products simpler and more facile vis-à-vis conventional isolation techniques.
Abstract:
Methods of making reduced derivatives of hydroxymethyl furfural using metal catalysts are described. The derivatives may have tetrahydrofuran or furan nucleus with alkoxymethyl ether or ester moieties on the 5′ carbon and methanol on the 2′ carbon. Suitable metal catalyst include Raney nickel, a nickel catalyst with a zirconium promoter, a chromite catalyst with a barium, a palladium catalyst, such as palladium on carbon, or a ruthenium catalyst. Also provided are a new class of compounds, which are n-alkoxy hexane diols (i.e., 1,2 or 1,5 hexane diol ethers) and methods of making the same by reduction of furan or tetrahydrofuran derivatives.
Abstract:
A process for making esters from organic acids by means of reacting a carboxylic acid with dialkylcarbonate in an alcohol-containing solvent without any extrinsic acid or base catalyst is described. A benefit of the preparation process is that it can make the separation and extraction of ester products simpler and more facile vis-a-vis conventional isolation techniques.