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A method of swing on a swing is disclosed, in which a user positioned on a standard swing suspended by two chains from a substantially horizontal tree branch induces side to side motion by pulling alternately on one chain and then the other.
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US Patent 4661643 - Hydrogenolysis process for the production of monoethylene glycol monomethyl ether, monoethylene glycol and ethanol
US Patent Issued on April 28, 1987
Estimated Patent Expiration Date:
May 21, 2005Estimated 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.
Estimated Patent Expiration Date:
May 21, 2005Estimated 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.AbstractThis invention relates to a process for selectively cleaving a polyalkylene glycol, e.g., diethylene glycol, containing at least one ether group therein at a carbon-to-oxygen covalent bond and independently at a carbon-to-carbon covalent bond by heating the polyalkylene glycol with molecular hydrogen in the presence of a hydrogenation catalyst containing ruthenium to produce at least one of monoethylene glycol monomethyl ether, monoethylene glycol and ethanol. The production rate of each of said monoethylene glycol monomethyl ether, monoethylene glycol and ethanol is at least about 10 moles/kilogram ruthenium/hour.Other References
| InventorApplicationNo. 06/736535 filed on 05/21/1985US Classes:568/678, Hydroxy containing (H of -OH may be replaced by a Group IA or IIA light metal)568/866, Preparing from ether568/903, By reduction, dehydration, or cleavage568/907Preparing from etherField of Search568/678, Hydroxy containing (H of -OH may be replaced by a Group IA or IIA light metal)568/866, Preparing from ether568/903, By reduction, dehydration, or cleavage568/907Preparing from etherExaminersPrimary: Mars, Howard T.Attorney, Agent or FirmUS Patent References1953548, 2497812, 2658081, 2768978, 3833634, 3975449, Hydrogenation of epoxides to primary alcoholsIssued on: 08/17/1976 Inventor: Suzuki4088700, Process for the hydrogenolysis of dioxolanes Issued on: 05/09/1978 Inventor: Watts, Jr. 4091041 International ClassesC07C 41/00 (20060101)C07C 29/00 (20060101) C07C 29/10 (20060101) C07C 29/60 (20060101) C07C 41/18 (20060101) C07C 43/13 (20060101) C07C 43/00 (20060101) |
