método para preparar ácido acrílico

• Main Authors: Raphael Heinrich Brand, Christian Raith, Marco Hartmann, Marek Pazicky, Klaus Joachim Müller-Engel, WOLFGANG FISCHER, Peter Zurowski, Rocco Paciello
• Format: Patent
• Language: Portuguese
• Published: 27.06.2017
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC CHEMISTRY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

1 / 1 resumo “mã‰todo para preparar ãcido acrãlico” a invenã§ã£o se refere a um mã©todo para preparar ã¡cido acrã­lico a partir de ã³xido de etileno e monã³xido de carbono, em que ã³xido de etileno ã© carbonilado em um solvente aprã³tico com monã³xido de carbono na presenã§a de um sistema de catalisador de cobalto para dar poli-3-hidroxipropionato, o teor de cobalto no poli-3-hidroxipropionato formado ã© reduzido com a ajuda de ã¡gua e/ou uma soluã§ã£o aquosa como uma precipitaã§ã£o e/ou lã­quido de lavagem, e o poli-3-hidroxipropionato ã© subsequentemente dividido pela termã³lise para dar o ã¡cido acrã­lico. A process for preparing acrylic acid from ethylene oxide and carbon monoxide, in which ethylene oxide is carbonylated in an aprotic solvent with carbon monoxide in the presence of a cobalt catalyst system to give poly-3-hydroxypropionate, the cobalt content in the poly-3-hydroxypropionate formed is reduced with the aid of water and/or an aqueous solution as a precipitation and/or wash liquid, and the poly-3-hydroxypropionate is subsequently split by thermolysis to give acrylic acid.