Patent application number | Description | Published |
20120277357 | PROCESSES FOR MAKING HIGH PURITY RENEWABLE SOURCE-BASED PLASTICIZERS AND PRODUCTS MADE THEREFROM - Presently disclosed are high purity unsaturated fatty acid esters with an ester moiety characterized by having from five to seven members in a ring structure, which esters when epoxidized find particular utility as primary plasticizers in flexible polyvinyl halide applications. Also disclosed are processes for making the high purity esters. | 11-01-2012 |
20130337570 | METHOD FOR QUANTITATIVE ANALYSIS OF SUGARS, SUGAR ALCOHOLS AND RELATED DEHYDRATION PRODUCTS - An improved method is provided for the quantitative analysis of mixtures including various sugars, sugar alcohols and related dehydration products, whereby these are enabled to be effectively and accurately quantitated through gas chromatography, for example, by their derivatization with a carboxylic acid, carboxylic acid anhydride or halide in the presence of a metal triflate catalyst. The method can be carried out at essentially room temperature conditions, with a sufficiently rapid and complete derivatization, even in the presence of substantial amounts of water, that the materials to be quantitated do not substantially break down or degrade and substantially completely accounted for in a derivatized form. | 12-19-2013 |
20140113999 | REDUCED COLOR EPOXIDIZED ESTERS FROM EPOXIDIZED NATURAL FATS AND OILS - Reduced color epoxidized fatty acid esters are provided which may be used as primary plasticizers for PVC, in replacement of phthalate plasticizers. The reduced color epoxidized fatty acid esters are prepared from natural fats or oils by transesterification and interesterification processes, whereby through the use of borohydride, materials having Pt-Co colors according to ASTM D1209 on the order of 50 and lower are possible. | 04-24-2014 |
20140249322 | MAKING EPOXIDIZED ESTERS FROM EPOXIDIZED NATURAL FATS AND OILS - Processes are described for making epoxidized fatty acid esters from epoxidized natural fats and oils, wherein low moisture fats and oils are identified and selected or made and used in a transesterification process. The products undergo phase separation, and reduced molar excesses of alcohol may be employed compared to processes not employing a low moisture feedstock. | 09-04-2014 |
20140371472 | METHOD OF MAKING ISOIDIDE - Disclosed is a process for the preparation of isoidide from isosorbide. An aqueous solution of isosorbide is subjected to epimerization in the presence of hydrogen under the influence of a catalyst comprising ruthenium on a support, preferably a carbon support. The process of the invention can be conducted using a relatively low hydrogen pressure, and leads to a desired distribution of epimers, favoring isoidide over isomannide and isosorbide. | 12-18-2014 |
20150126599 | PROCESS FOR PRODUCING ISOHEXIDES - A process is described for producing an isohexide wherein an hexitol or a combination of hexitols is continuously dehydrated in the presence of an acid catalyst under vacuum using a thin film evaporator. | 05-07-2015 |
20150225358 | PROCESS FOR MAKING CERTAIN EPOXIDIZED FATTY ACID ESTER PLASTICIZERS - A process is described for making an epoxidized fatty acid ester material useful as a plasticizer for flexible PVC applications, comprising: transesterifying a low moisture epoxidized natural fat or oil with a first alcohol in a first transesterification step; then, after the resultant product mixture phase separates into an epoxidized fatty acid ester phase and a second phase comprising byproduct glycerol, substantially removing the second phase; combining epoxidized fatty acid esters in the epoxidized fatty acid ester phase with more of the first alcohol and with a second alcohol which includes 5 to 7 members in a ring structure and carrying out a second transesterification step, while continuously removing first alcohol during the second transesterification step in order to drive the reaction with the second alcohol toward the desired epoxidized fatty acid ester material from the second alcohol, but without large molar excesses of the second alcohol being required. | 08-13-2015 |
20150274745 | HYDROGENATION OF ISOHEXIDE PRODUCTS FOR IMPROVED COLOR - A process is described for making isohexides, comprising dehydrating one or more hexitols with an acid catalyst to form a crude dehydration product mixture including one or more isohexides, further processing the mixture to separate out one or more fractions of a greater purity or higher concentration of at least one of the isohexides, and hydrogenating at least one of a) the crude dehydration product mixture, b) a neutralized crude dehydration product mixture, following a neutralization of the crude dehydration product mixture, c) the product mixture following a neutralization step and further following a step to remove ionic species therefrom, d) a greater purity or higher concentration fraction, and e) a lesser purity or concentration fraction, by reaction with a hydrogen source in the presence of a hydrogenation catalyst. Hydrogenation improves the color and/or color stability of the material, especially of a finished isohexide product. | 10-01-2015 |
20150274746 | ADDITIVES FOR IMPROVED ISOHEXIDE PRODUCTS - Reduced color and improved color stability isohexide products are enabled through adding one or more antioxidants to a crude dehydration product mixture from an acid-catalyzed dehydration of a corresponding hexitol. | 10-01-2015 |