PROCESS FOR THE REDUCTION OF REGIOISOMER WHERE THE DOUBLE BOND IS SHIFTED FROM ETHYLENICALLY UNSATURATED ALKOXYLATED ALCOHOLS

• Main Authors: Zimmermann, Jörg, Glaus, Joachim, Weidmann, Jürg
• Format: Patent
• Language: English; French; German
• Published: 07.06.2023
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; LIME, MAGNESIA; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC CHEMISTRY; ORGANIC MACROMOLECULAR COMPOUNDS; REFRACTORIES; SLAG; THEIR PREPARATION OR CHEMICAL WORKING-UP; TREATMENT OF NATURAL STONE

The present invention relates to a process for the reduction of the content of a compound I of general formula (II)where R1 is hydrogen or methyl, each R2, independently from each other, is hydrogen or methyl, R3 is hydrogen or an aliphatic or cycloaliphatic or aromatic hydrocarbon with 1 - 8 carbon atoms, AO is a C2 - C12 oxyalkylene group,x = 0 or 1, andn = 2 - 350,from a mixture comprising or consisting of a compound I of general formula (II) and an alkoxylated alcohol A of general formula (I)where R1, R2, R3, AO, x, and n are as described in general formula (II) above, characterized in that said process comprises a treatment of said mixture comprising or consisting of a compound I and an alkoxylated alcohol A with an acid.The present invention also relates to the use of such alkoxylated alcohols A for the production of polycarboxylate ethers.