C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 67/08 (2006.01) C07C 29/149 (2006.01) C07C 29/17 (2006.01) C07C 31/20 (2006.01) C07C 69/60 (2006.01) C07D 307/08 (2006.01) C07D 307/32 (2006.01)
Patent
CA 2309997
A process for the production of at least one C4 compound selected from 1,4- butanediol, .gamma.-butyrolactone and tetrahydrofuran, in which a solution of maleic anhydride in a high boiling ester is esterified with a C1 to C4 alcohol to form the corresponding di-(C1 to C4 alkyl)maleate, which is hydrogenated to form the at least one C4 compound. The high boiling ester has a boiling point at atmospheric pressure which is about 30 ~C higher than that of the di-(C1 to C4 alkyl)maleate and is selected from di-(C1 to C4 alkyl)esters of alkyl dicarboxylic acids containing up to 13 carbon atoms, mono- and di-(C10 to C18 alkyl)esters of maleic acid, fumaric acid, succinic acid, and mixtures thereof, (C1 to C4 alkyl)esters of naphthalenemonocarboxylic acids, tri-(C1 to C4 alkyl)esters of tricarboxylic acids, and di-(C1 to C4 alkyl)esters of isophthalic acid.
L'invention concerne un procédé pour la production d'au moins un composé de C¿4? sélectionné parmi 1,4-butanediol, .gamma.-butyrolactone et tétrahydrofuranne, dans lequel une solution d'anhydride maléique dans un ester à haut point d'ébullition est estérifiée avec un alcool C¿1? à C¿4? pour former le di-(alkyl C¿1?-C¿4?) maléate correspondant, lequel est hydrogéné pour former le ou les composés de C¿4?. L'ester à haut point d'ébullition présente un point d'ébullition à la pression atmosphérique supérieur d'environ 30 ·C à celui du di-(alkyl C¿1? à C¿4?) maléate et est choisi parmi des di-(alkyl C¿1? à C¿4?) esters d'acides alkyldicarboxyliques contenant jusqu'à 13 atomes de carbone, des mono- et di-(alkyl C¿10? à C¿18?) esters d'acide maléique, d'acide fumarique, d'acide succinique, et des mélanges de ceux-ci, des (alkyl C¿1? à C¿4?) esters d'acides naphtalènemonocarboxyliques, des tri-(alkyl C¿1? à C¿4?) esters d'acides tricarboxyliques, et des di-(alkyl C¿1? à C¿4?) esters d'acide isophtalique.
Hiles Andrew George
Tuck Michael William Marshall
Wood Michael Anthony
Basf Aktiengesellschaft
Kvaerner Process Technology Limited
Ridout & Maybee Llp
LandOfFree
Process for preparing gamma-butyrolactone, butane-1,4-diol... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for preparing gamma-butyrolactone, butane-1,4-diol..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for preparing gamma-butyrolactone, butane-1,4-diol... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1670348