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The development of a process for the manufacture of p-tertiary-butylbenzoic acid

✍ Scribed by R.M. Cole; A.W. Fairbairn; K.D. Detling


Book ID
104107554
Publisher
Elsevier Science
Year
1954
Tongue
English
Weight
662 KB
Volume
3
Category
Article
ISSN
0009-2509

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✦ Synopsis


A process has been developed for the manufacture of para-tertlary-butylbenzolc a cid. It is based on blowing air through hot liquid para-tertiary-butyltohiene In the presence of catalytic amounts of cobalt. The product is recovered by cooling the reactor effiucnt to crystallize the tortfary-butylbenzoic acid. The crystals are separated by ccntrlfuging nnd washed with fresh feed and hot water. This process has been carried through the laboratory and pilot plant stages and commercial quantities arc now being offered. The paper describes various fcatures of the process and also offers some speculations as to the nature of the reactions occurring in the oxidation step.

Resume-On a -mis au point un precede de fabrication de l'acide para tertiaire butyl benzoique. Le principe conslste a scuttler de I'air a travers Ie para t ertiaire butyl toluene liquide chaucre en presence de cobalt commc catalyseur, La recuperation se fait par refroidissement du produit sortant du reacteur, provoquant 10 cristallisation de l'aeide para butyl tertiaire benzolque, Les crlstaux sont separes par centrifugation et laves avec le produit d'entree frais ct a I'eau chaude, Le precede a deja pareouru les echelles de Iaboratoirc et d 'usine ,p ilote. Les quantltes de produit obtenues sont actuellement mis sur Ie marche.

Les auteurs deerivent diCfercnts asp ects du procdde et presentcnt quelques suggestions quant a la nature des reactions qui se produisent pendant In phase d'oxydation.


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