Abstract: The invention concerns a process for tanning hide to obtain leather. The general process for obtaining the intermediary wet blue stage comprises the following steps: a) a picking step with acid and salt, followed by b) a tanning step with chromium salt, followed by c) a basification step. The invention is characterized in that between step b) and c), a re-acidification step with organic acids is added. In particular the organic acids are selected from glutaric acid (GA), 2-methyl glutaric acid (MGA), succinic acid, ethyl succinic acid (ESA), adipic acid (AA), maleic anhydride, fumaric anhydride, tricarboxylic acids, hydroxycarboxylic acids, and mixture thereof. This invention enables an increase of the up-taking of the re-tanning products and provides leather with improved mechanical properties.

Abstract: The invention concerns a process for tanning hide to obtain leather. The general process for obtaining the intermediary wet blue stage comprises the following steps: a) a picking step with acid and salt, followed by b) a tanning step with chromium salt, followed by c) a basification step. The invention is characterized in that the bath of the pickling step comprises organic acids selected from 2-Methyl glutaric acid (MGA), ethyl succinic acid (ESA) and mixture thereof instead of the traditional strong acid, generally sulfuric acid This process requires less basification agent and enables an increase of the up-taking of the re-tanning products. This invention provides leather with improved mechanical properties.

Abstract: The present invention relates to an emulsifiable concentrate comprising an active ingredient being a dinitroaniline compound, preferably selected from the group consisting of pendimethalin, trifluralin, benfluralin, butralin, dinitramine, ethalfluralin, fluazinam, fluchloralin, flumetralin, oryzalin, prodiamine and mixtures thereof. The emulsifiable concentrate of the invention avoids especially crystallization at low temperature when the concentration of the active ingredient is high.

Abstract: The present invention relates to an emulsifiable concentrate comprising an active ingredient being a dinitroaniline compound, preferably selected from the group consisting of pendimethalin, trifluralin, benfluralin, butralin, dinitramine, ethalfluralin, fluazinam, fluchloralin, flumetralin, oryzalin, prodiamine and mixtures thereof. The emulsifiable concentrate of the invention avoids especially crystallization at low temperature when the concentration of the active ingredient is high.

Abstract: The invention concerns a process for tanning hide to obtain leather. The general process for obtaining the intermediary wet blue stage comprises the following steps: a) a picking step with acid and salt, followed by b) a tanning step with chromium salt, followed by c) a basification step. The invention is characterized in that between step b) and c), a re-acidification step with organic acids is added. In particular the organic acids are selected from glutaric acid (GA), 2-methyl glutaric acid (MGA), succinic acid, ethyl succinic acid (ESA), adipic acid (AA), maleic anhydride, fumaric anhydride, tricarboxylic acids, hydroxycarboxylic acids, and mixture thereof. This invention enables an increase of the up-taking of the re-tanning products and provides leather with improved mechanical properties.

Abstract: The invention concerns a process for tanning hide to obtain leather. The general process for obtaining the intermediary wet blue stage comprises the following steps: a) a picking step with acid and salt, followed by b) a tanning step with chromium salt, followed by c) a basification step. The invention is characterized in that the bath of the pickling step comprises organic acids selected from 2-Methyl glutaric acid (MGA), ethyl succinic acid (ESA) and mixture thereof instead of the traditional strong acid, generally sulfuric acid This process requires less basification agent and enables an increase of the up-taking of the re-tanning products. This invention provides leather with improved mechanical properties.

Abstract: The present invention relates to an emulsifiable concentrate comprising an active ingredient being a dinitroaniline compound, preferably selected from the group consisting of pendimethalin, trifluralin, benfluralin, butralin, dinitramine, ethalfluralin, fluazinam, fluchloralin, flumetralin, oryzalin, prodiamine and mixtures thereof. The emulsifiable concentrate of the invention avoids especially crystallization at low temperature when the concentration of the active ingredient is high.

Abstract: Novel bis(dialkylamide) compounds having the formula: R2R3NOC—R1a—CONR4R5 are particularly useful solvents, for example in plant-protection formulations.

Abstract: Processes for the purification of crude glycerol obtained as a by-product of industrial processes, such as saponification, hydrolysis and transesterification with low chain alcohols of natural oils and fats, is described. Purified glycerol can also be obtained from the treatment of crude glycerol obtained as a by-product of biodiesel production from vegetable oils and animal fats.

Abstract: Novel bis(dialkylamide) compounds having the formula: R2R3NOC—R1a—CONR4R5 are particularly useful solvents, for example in plant-protection formulations.

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