Roquette Freres

Basf Se Corporation

Hervé Wyart

Boris Breitscheidel

Mathias Ibert

Patrick M Fuertes

Guy M Fleche

Jochen Wagner

Clothilde Buffe

Rodolphe Tamion

Emilie Josien

Anne Lambin

Thierry Feron

Arnaud Verraes

Monique Sobocinski

Maxime Ingret

Oana-Alice Rusu P

Juliette Brocard

Thomas Lesur

Catherine Baurain

Gwenaëlle Parent

Klaus Stoll

Wolfgang HÖLDERICH

Jérome Saint Pol

The present invention relates to a process for packaging a dianhydrohexitol, in the form of an aqueous solution in a container comprising a metal-based layer. It also relates to the container containing the aqueous solution of dianhydrohexitol.

Process for packaging a dianhydrohexitol, aqueous solution of dianhydrohexitol packaged and uses thereof

A method for producing 1,4:3,6-dianhydrohexitols, including the steps of: a) supplying at least one hexitol, b) dehydrating the hexitol, and c) distillating the dehydration product produced in step b), wherein: the hexitol is supplied in the form of an aqueous solution in step a); and the distillation is carried out by means of a thin-film evaporator in step c).

Method for producing dianhydrohexitol with a step of distillation on a thin-film evaporator

A process for manufacturing crystals of 1,4:3,6-dianhydrohexitols, by manufacturing a solution of an internal dehydration product of at least one hexitol, distilling the solution, crystallizing, and wherein the crystallization mother liquors undergo a step of evaporative crystallization. Unlike the prior art processes that seek to recycle the crystallization mother liquors, evaporative crystallization economically and efficiently replaces the succession of steps consisting of at least one concentration, then at least one step of purification by distillation, chromatography, or crystallization.

Process for manufacturing dianhydrohexitol crystals with a step of evaporative crystallization of the first crystallization mother liquors

The invention relates to isosorbide epoxide esters having Formulas (I), (II), and (III), to the mixtures thereof, and to the use thereof as an additive in PVC compositions, particularly as a plasticizer.

Isosorbide epoxide diesters, and the use thereof as a plasticizer in PVC compositions

A dianhydrohexitol diester composition is obtained by esterifying a dianhydrohexitol composition with a carboxylic acid in the presence of an acid catalyst and hypophosphorous acid. Preferably, the hypophosphorous acid is introduced in an amount between 0.05 and 2 wt. percent of dianhydrohexitol, and in a hypophosphorous acid/acid catalyst weight ratio of less than 1/1. Dianhydrohexitol diester compositions, for example isosorbide diesters, isomannide and/or isoidide rich in diester(s), and having a low yellow index (YI), are useful in numerous industrial applications, in particular in plastic compositions.

Method for preparing diahydrohexitol diester compositions

A method for preparing a dianhydrohexitol diester composition, characterized in that it comprises a step which consists in esterifying a dianhydrohexitol composition with a carboxylic acid in the presence of an acid catalyst and hypophosphorous acid. Preferably, the hypophosphorous acid is introduced in an amount ranging between 0.05 and 2 wt. % of dianhydrohexitol, and in a hypophosphorous acid/acid catalyst weight ratio less than 1/1. The method enables novel dianhydrohexitol diester compositions, for example isosorbide diesters, isomannide and/or isoidide richer in diester(s) and/or less colored, useful in numerous industrial applications, in particular in plastic compositions, to be obtained.

Method for preparing dianhydrohexitol diester compositions

The invention concerns a method for purifying a composition containing at least a product for internal dehydration of a hydrogenated sugar. The invention is characterised in that it comprises: (a) an optional step whereby said composition is treated, whether after re-dissolving or not, with at least a discoloration means; (b) a subsequent step whereby the composition, optionally treated with discoloration means, is treated with at least ion-exchanging means; (c) a subsequent step whereby the resulting composition is treated with at least discoloration means. Said method is in particular applicable to isohexide compositions, in particular isosorbide or isomannide. The resulting compositions, which exhibit particular characteristics in terms of purity and proportion of some impurities, constitute novel products for use in chemical, pharmaceutical, cosmetology and food industries.

Method for purifying a composition containing at least one internal dehydration product of a hydrogenated sugar

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Cuinchy, France

Hervé Wyart