Barium oxide catalyzed ethoxylation
Patent 4239917 Issued on December 16, 1980. Estimated Expiration Date: 
July 2, 1999. 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.
July 2, 1999. 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 References 3328306 3475499 InventorAssigneeApplicationNo. 06/054322 filed on 07/02/1979US Classes:568/618, Preparing from organic hydroxy containing compound (H of -OH may be replaced by a Group IA or IIA light metal)568/678Hydroxy containing (H of -OH may be replaced by a Group IA or IIA light metal)ExaminersPrimary: Mars, Howard T.Attorney, Agent or FirmInternational ClassesC07C 41/00 (20060101)C07C 41/03 (20060101) C07C 43/00 (20060101) C07C 43/13 (20060101) AbstractBarium oxide is used as an ethoxylation catalyst for the reaction of ethylene oxide and alkanols of all classes. The reaction is carried out at temperatures of from about 200° to about 500° F. to yield the ethoxylated product. The product obtained has a very narrow, high adduct distribution with low levels of by-products and unreacted free alcohols. Calcium and magnesium oxides show no catalytic effect. |
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