Ethoxylation with strontium bases
Patent 4223164 Issued on September 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 References3328306 InventorsAssigneeApplicationNo. 06/054089 filed on 07/02/1979US Classes:408/115B, Guide bushing568/613, Acyclic568/622, Hydroxy containing (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) AbstractBasic compounds of strontium catalyzed the ethoxylation of alcohols in the presence of phenol or alkylphenol co-catalyst. Strontium-produced ethoxylates have sharper ethylene oxide distributions, lower free alcohol, lower pour points, and better detergency than the ethoxylates obtained from alkali base catalysis. |
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