The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 06, 1976
Filed:
Dec. 05, 1974
Susumu Fujiyama, Niigata, JA;
Takehiko Takahashi, Niigata, JA;
Shigeki Kozao, Niigata, JA;
Toyomi Kasahara, Kurashiki, JA;
Mitsubishi Gas Chemical Company, Inc., Tokyo, JA;
Abstract
This invention relates to a two step process for producing p-tolualdehyde which comprises reacting toluene with carbon monoxide in the presence of hydrogen fluoride and boron trifluoride, characterized by mixing all of the toluene, all of the hydrogen fluoride and only part of the boron trifluoride necessary to convert a substantial amount of toluene to p-tolualdehyde, thereby forming a toluene-hydrogen fluoride-boron trifluoride complex and reacting the toluene in the reaction system with carbon monoxide, thereby converting a portion of the toluene to p-tolualdehyde, and then adding the remainder of the boron trifluoride to the reaction product and reacting the remainder of the toluene with carbon oxide.