Process for producing aliphatic oligocarbonate diols
申请人:——
公开号:US20040143130A1
公开(公告)日:2004-07-22
The present invention relates to a process for producing an aliphatic oligocarbonate diol comprising a) reacting an aliphatic diol with dimethyl carbonate at an elevated pressure in a reaction mixture, and b) subsequently removing unreacted methanol and dimethyl carbonate under a reduced pressure to uncap the terminal OH groups.
Lightfast colorant and lightfast ink composition including the same
申请人:Samsung Electronics Co., Ltd.
公开号:US20040158050A1
公开(公告)日:2004-08-12
A lightfast colorant and a lightfast ink composition including the lightfast colorant utilize a lightfast colorant that is derived by covalently binding a cinnamate derivative and a conventional colorant. The lightfast colorant improves storage stability as well as lightfastness when added to an ink composition.
[EN] OLIGOMERS OF FDCA AND GLYCOLS FROM A ONE-POT ESTERIFICATION-TRANSESTERIFICATION PROCESS USING WATER-TOLERANT METAL TRIFLATE CATALYST<br/>[FR] OLIGOMÈRES DE FDCA ET DE GLYCOLS ISSUS D'UN PROCÉDÉ MONOTOPE D'ESTÉRIFICATION-TRANSESTÉRIFICATION UTILISANT UN CATALYSEUR À BASE DE TRIFLATE MÉTALLIQUE TOLÉRANT À L'EAU
申请人:ARCHER DANIELS MIDLAND CO
公开号:WO2017091412A1
公开(公告)日:2017-06-01
A method for preparing sugar-based oligomers is described. The process involves sequential (one-pot) esterification of 2,5-furan-dicarboxylic acid (FDCA) with an alcohol and transesterification with a glycol, as catalyzed by relatively low amounts of homogeneous water-tolerant Lewis acid catalysts, which can be retained in the product mixture from the esterification through transesterification.
Principal solvents, especially mono-ol and diol principal solvents, having a ClogP of from about 0.15 to about 0.64, preferably from about 0.25 to about 0.62, and more preferably from about 0.40 to about 0.60, are disclosed that have the ability to make clear aqueous fabric softener compositions containing relatively high concentrations of fabric softener actives having ester linkages in their long, hydrophobic chains. The fabric softener actives are either unsaturated, or have intermediate length chains (˜C
12-14
) and the said principal solvents are used at levels of less than about 40%. Other solvents may be present. Some of the said principal solvents are novel compounds and/or novel mixtures. Premixes of the fabric softening actives, the principal solvents, and, optionally, other solvents are useful in the preparation of complete formulations by obviating/limiting the need for heating.
Principal solvents, especially mono-ol and diol principal solvents, having a ClogP of from about 0.15 to about 0.64, preferably from about 0.25 to about 0.62, and more preferably from about 0.40 to about 0.60, are disclosed that have the ability to make clear aqueous fabric softener compositions containing relatively high concentrations of fabric softener actives having ester linkages in their long, hydrophobic chains. The fabric softener actives are either unsaturated, or have intermediate length chains (˜C
12-14
) and the said principal solvents are used at levels of less than about 40%. Other solvents may be present. Some of the said principal solvents are novel compounds and/or novel mixtures. Premixes of the fabric softening actives, the principal solvents, and, optionally, other solvents are useful in the preparation of complete formulations by obviating/limiting the need for heating.