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:
Sep. 28, 1982
Filed:
Mar. 04, 1981
Kanemaru, Chigasaki, JP;
Kenji Yoshida, Fujisawa, JP;
Thikashi Higashino, Yokohama, JP;
Tadashi Kozima, Yokohama, JP;
Mitsui Toatsu Chemicals, Inc., Tokyo, JP;
Abstract
Lower alcohols are prepared by hydrating the corresponding olefin in an aqueous solution containing a chromium compound, phosphoric acid and heteropolyacid. Phosphoric acid has a high catalytic activity for the hydration of lower olefins, but causes a remarkable corrosion to an apparatus material under the state of an aqueous solution. The catalytic composition consisting of phosphoric acid and heteropolyacid is improved in activity and stability. Owing to the coexistence of heteropolyacid an acid degree is raised, nevertheless the corrosion of apparatus materials is not increased. As an anti-corrosive a chromium compound is incorporated into the aqueous solution containing the catalytic composition of phosphoric acid and heteropolyacid.