RENEWABLE PARA-XYLENE FROM ACETIC ACID

• Main Authors: SUN, JUNMING, LIU, CHANGJUN, MARTIN, KEVIN, WANG, YONG, SMITH, COLIN, VENKITASUBRAMANIAN, PADMESH
• Format: Patent
• Language: English; French
• Published: 30.04.2015
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; METALLURGY; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; THEIR RELEVANT APPARATUS; TRANSPORTING

Processes are described for improved utilization of the byproduct acetic acid universally produced in various oxidative processes for making acrylic acid and methacrylic acid, wherein at least a portion of the byproduct acetic acid is converted to isobutene and optionally to one or more further value-added products which may be prepared from isofoutene. La présente invention concerne des procédés permettant une utilisation améliorée de l'acide acétique résiduaire universellement produit dans divers processus oxydatifs de fabrication d'acide acrylique et d'acide méthacrylique, au moins une partie de l'acide acétique résiduaire étant transformé en isobutène et facultativement en un ou plusieurs autres produits à valeur ajoutée pouvant être préparés à partir de l'isobutène.