Abstract:
The invention relates to a method for producing equilibrium peracetic acid by reacting acetic acid with hydrogen peroxide in an aqueous reaction mixture in the presence of methanesulphonic acid as catalyst, and also to the equilibrium peracetic acid obtainable by the method.
Abstract:
The present invention relates to apparatus and methods for making a peroxycarboxylic acid. The apparatus includes a reaction catalyst and a guard column for pretreating one or more reagents, which can increase the life, activity, and/or safety of the reaction catalyst. The peroxycarboxylic acid compositions made by the method and apparatus can include one or more peroxycarboxylic acids.
Abstract:
The present invention relates to apparatus and methods for making a peroxycarboxylic acid. The apparatus includes a reaction catalyst and a guard column for pretreating one or more reagents, which can increase the life, activity, and/or safety of the reaction catalyst. The peroxycarboxylic acid compositions made by the method and apparatus can include one or more peroxycarboxylic acids.
Abstract:
The present invention relates to apparatus and methods for making a peroxycarboxylic acid. The apparatus includes a reaction catalyst and a guard column for pretreating one or more reagents, which can increase the life, activity, and/or safety of the reaction catalyst. The peroxycarboxylic acid compositions made by the method and apparatus can include one or more peroxycarboxylic acids.
Abstract:
The invention relates to a method and an arrangmement in which a percarboxylic acid product is prepared and used. Conventional methods include refrigerated transport and double storage of the percarboxylic acid product before the consumption thereof at its site of use. These expensive stages have now been eliminated carrying out the preparation in connection with the use.
Abstract:
A process for the continuous production of a mixture of substances or of a reaction mixture that has been formed by reaction of components contained therein. The component streams withdrawn from a storage container (1, 2 or 3) or a distribution network (12) are each conveyed via a controlled system (22, 23, 24, 25) which in each instance comprises a flow-measuring device (8, 9, 10, 11) and a regulating element (34, 35, 36, 37). The flow-rates of the individual components are regulated in quantitatively proportional manner with reference to the flow-rate of a first component. The resulting regulated flow-rates are introduced into a receiving container, either directly or after individual flow-rates have been completely or partially conducted together. The process and the device are especially suitable for the on-site production of mixtures of substances that cannot be transported or that can only be transported in elaborate manner, such as relatively highly concentrated solutions of peroxycarboxylic acid.
Abstract:
A process for producing peracids from lactic acid-containing solutions derived from biomass processing systems comprising: adjusting the pH of the solution to about 8-9 and removing alkaline residue fractions therefrom to form a solution comprised substantially of lower aliphatic hydroxy acids; oxidizing the solution to produce volatile lower aliphatic aldehydes; removing said aldehydes as they are generated; and converting said aldehydes to peracids.
Abstract:
1. IN THE PREPARATION OF A PERCARBOXYLIC ACID BY REACTION AT A TEMPERATURE OF ABOUT -20 TO 100*C. OF A CARBOXYLIC ACID OR ITS ANHYDRIDE WITH HYDROGEN PEROXIDE, THE CARBOXYLIC ACID BEING SELECTED FROM THE GROUP CONSISTING OF ALKANOIC, HALOGEN SUBSTITUTED ALKANOIC, BENZOIC AND NITRO-SUBSTITUTED BENZOIC ACIDS, THE IMPROVEMENT WHICH COMPRISES ADDING TO A DILUTE AQUEOUS HYDROGEN PEROXIDE SOLUTION A PHOSPHORUS COMPOUND OF THE FORMULA
R1-(X)M-P(=O)(-(V)N-R2)-(Z)P-R3
WHEREIN: X, Y AND Z EACH INDIVIDUALLY IS AN OXYGEN ATOM, AN $N-C1-C6 ALKYL OR AN $N-C4-SC7 CYCLOALKYL GROUP, M, N AND P EACH INDIVIDUALLY IS 0 OR 1, R1 R2 AND R3 EACH INDIVIDUALLY IS A C1-C6 ALKYL OR C4-C6 CYCLOALKYL RADICAL OPTIONALLY SUBSTITUTED WITH HALOGEN, OH, LOWER ALKOXY, CN OR PHENYL; OR A PHENYL RADICAL OPTIONALLY SUBSTITUTED WITH HALOGEN, OH, LOWER ALKYL OR ALKOXY, CARBO-LOWER ALKOXY OR CN, OR TWO OF R1, R2 AND R3 AND R3 TOGETHER COMPRISE AN ALKYLENE RADICAL FORMING A 5-TO 7-MEMBERED HETEROCYCLIC RING CONTAINING PHOSPHORUS AS A HETERO ATOM, REMOVING THE WATER FROM SAID AQUEOUS HYDROGEN PEROXIDE PHOSPHORUS COMPOUND-CONTAINING SOLUTION AT LEAST IN PART, AND USING THE RESIDUE TO EFFECT AND REACTION WITH SAID CARBOXYLIC ACID OR ITS ANHYDRIDE.