Phenol preparation process and propylene recovery therefrom
Patent 5017729 Issued on May 21, 1991. Estimated Expiration Date: 
September 5, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
September 5, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesAlcohol dehydration employing a zinc aluminate catalyst Process for the production of phenol and acetone Process for preparing a methyl phenol Method for production of phenol/acetone from cumene hydroperoxide Method of oxidizing secondary alkyl substituted naphtalenes and a process of producing isopropylnaphthols Patent #: 4906790 InventorsAssigneeApplicationNo. 402528 filed on 09/05/1989US Classes:568/798, Preparing by cleavage of hydroperoxide or other peroxide568/385, Peroxy containing reactant568/565, Preparing by oxidation utilizing gaseous oxygen568/569, Preparing by oxidation utilizing gaseous oxygen568/577, Preparing by oxidation utilizing gaseous oxygen568/741, Preparing from peroxide or preparing by oxidation568/768, Preparing by cleavage of hydroperoxide or other peroxide568/799, Preparing by reduction or dehydrogenation (e.g., by hydrogenation, etc.)568/840, Acyclic585/422, By condensation of entire cyclic molecules or entire hydrocarbyl moieties thereof, e.g., polymerization, etc.585/446By condensation of entire molecules or entire hydrocarbyl moieties thereof, e.g., alkylation, etc.ExaminersPrimary: Lone, Werren B.Attorney, Agent or FirmForeign Patent References
International ClassesC07C 037/08C07C 045/53 Foreign Application Priority Data1988-09-30 JPAbstractPhenol is produced in a recycle manner by (a) reacting benzene with propylene to synthesize cumene, (b) oxidizing the cumene of step (a) into cumene hydroperoxide, (c) acid cleaving cumene hydroperoxide into phenol and acetone, (d) hydrogenating the acetone of step (c) into isopropanol, (e) dehydrating the isopropanol of step (d) into propylene, and (f) recycling the propylene of step (e) to step (a). It is also possible to take propylene from step (e). The acetone by-product produced upon preparation of phenol is converted into propylene which is useful by itself for any other uses or recycled to the phenol producing process.Other References
Field of SearchPeroxy containing reactantPreparing by oxidation utilizing gaseous oxygen Preparing by oxidation utilizing gaseous oxygen Preparing by oxidation utilizing gaseous oxygen Preparing from peroxide or preparing by oxidation Preparing by cleavage of hydroperoxide or other peroxide Preparing from aryl sulfonate Preparing by cleavage of hydroperoxide or other peroxide Preparing by reduction or dehydrogenation (e.g., by hydrogenation, etc.) Acyclic Hydroxy containing (H of -OH may be replaced by a Group IA or IIA light metal) By condensation of entire molecules or entire hydrocarbyl moieties thereof, e.g., alkylation, etc. |
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