CAS: 112-98-1; 5,8,11,14,17-Pentaoxaheneicosane

上下游产品

三乙二醇单丁醚 Butyltriethyleneglycol 143-22-6
三缩四乙二醇 Tetraethylene Glycol 112-60-7
18-冠醚-6 18-Crown-6 Ether 17455-13-9

📜三乙二醇单丁醚,2-Butoxyethyl Mesylate置于sodium Hydride体系中,用 甲苯 用作溶剂,化学反应生成二丁氧基四甘醇醚
参考文献:Process For The Preparation Of Cyclic Esters And Method For Purification Of The Same
标题:Process For The Preparation Of Cyclic Esters And Method For Purification Of The Same
摘要:本发明提供了一种通过脂肪族聚酯的降解来生产环酯的方法.在该过程中,将含有脂肪族聚酯和具有沸点在230-450oc和分子量在150-450之间的特定聚烷基乙二醇醚的混合物,在常压或减压下加热至脂肪族聚酯发生降解的温度.然后,形成由脂肪族聚酯的熔融相和聚烷基乙二醇醚的液相组成的基本均相溶液相.继续加热溶液相以通过降解形成环酯并与聚烷基乙二醇醚一起蒸馏出环酯,然后从馏出物中回收环酯.本发明还提供了一种利用上述特定聚烷基乙二醇醚对粗环酯进行纯化的方法.

专利信息

专利号:US-8684284-B2
优先权日:2006-11-24
标 题:Injector for large amount of aerosol powder for synthesis of carbon nanotubes
发明人：HARUTYUNYAN AVETIK R
权利人:HARUTYUNYAN AVETIK R; HONDA MOTOR CO LTD
摘要:Methods, processes, and apparatuses for the large scale synthesis of carbon nanostructures are provided. The apparatus for continuous large scale production of SWNTs includes a chamber. Positioned in one end of the chamber is a piston and at the other end is a tangential vortex created by gases forced into the chamber from opposite sides of the chamber walls. The chamber can be heated to reduce or eliminate agglomeration of small particles. The piston is used to push the catalyst towards the vortex, and the injection rate is controlled by the speed of the piston and the gas flow rate to create the vortex that also act as the transport gas. Thus, greater than 1 kg/h of an aerosolized, deagglomerated dry powder catalyst can be delivered to the reactor at a constant flow rate.

专利号:US-9174847-B2
优先权日:2008-05-01
标题:Synthesis of high quality carbon single-walled nanotubes
发明人：HARUTYUNYAN AVETIK R; KUZNETSOV OLEG
权利人:HARUTYUNYAN AVETIK R; KUZNETSOV OLEG; HONDA MOTOR CO LTD
摘要:Methods and processes for synthesizing high quality carbon single-walled nanotubes (SWNTs) are provided. A carbon precursor gas at reduced concentration (pressure) is contacted with a catalyst deposited on a support and at temperature about 10° C. above the SWNT synthesis onset temperature, but below the thermal decomposition temperature of the carbon precursor gas for given growth conditions. The concentration (pressure) of the carbon precursor gas can be controlled by reducing the total pressure of the gas, or by diluting with an inert carrier gas, or both. The methods produce SWNTs with the ratio of G-band to D-band in Raman spectra (I G :I D ) of about 5 to about 200.

专利号:US-3636161-A
优先权日:1969-11-26
标 题:Synthesis of gem-dihalocyclopropane compounds
发明人：ROBINSON GENE C
权利人:ETHYL CORP
摘要:HYDROLYSIS OF TRIS - (2,2-DIHALOCYCLOPROPYLCARBINYL)ORTHOFORMATE GIVES 2,2-DIHALOCYCLOPROPYL CARBINOL. THESE ORTHOFORMATES, WHICH CAN BE PREPARED BY REACTING TRIALLYLORTHOFORMATE WITH AN ALKALI METAL HYDROXIDE AND A HALOFORM, AND THE CARBINOLS RESULTING FROM THE HYDROLYSIS REACTION ARE USEFUL AS GERMICIDES, INSECTICIDES, MITICIDES AND FUNGICIDES, AND AS CHEMICAL INTERMEDIATES.

专利号:US-3644446-A
优先权日:1969-07-01
标 题 :Preparation of rhodium and iridium hydride carbonyl complexes
发明人：BOOTH FRANK B; FENTON DONALD M; OLIVIER KENNETH L
权利人:UNION OIL CO
摘要:HYDRIDE CARBONYL COMPLEXES OF RHODIUM AND IRIDIUM WITH BIPHYLIC LIGANDS ARE PREPARED BY TREATMENT OF RHODIUM OR IRIDIUM, COMPLEXES OR SALTS THEREOF WITH AN ALKALI METAL HYDROXIDE, ALKOXIDE OR ARYLOXIDE AND A BIPHYLLIC LIGAND AND A MIDL REDUCING AGENT. IN A TYPICAL SYNTHESIS A RHODIUM CARBONYL SALT IS CONTACTED WITH AN ALKALI METAL ALKOXIDE IN THE PRESENCE OF THE LIGAND AND THE HYDRIDE IS FORMED BY SUBSEQUENT OR SIMULTANEOUS CONTACTING WITH A REDUCING AGENT SUCH AS HYDROGEN, CARBON MONOXIDE OR AN OXIDIZABLE ALCOHOL. THE COMPOUNDS HAVE UTILITY AS HYDROFORMYLATION CATALYSTS.

专利号:US-3523971-A
优先权日:1966-05-26
标 题 :Synthesis of acrylamides
发明人：BIALE GIOVANNI
权利人:UNION OIL CO

专利号:US-10729623-B2
优先权日:2015-05-08
标 题:Method for producing elliptical, needle-shaped, or rod-shaped polymer particles
发明人：HAYAKAWA KAZUTOSHI; HASHIBA TOSHIFUMI; MATSUZAKA ERINA; YAMADA Goki
权利人:NISSHINBO HOLDINGS INC
摘要:A method for producing elliptical, needle-shaped, or rod-shaped polymer particles satisfying (1)-(3) below includes a step in which a synthesis solution including water, a mixed solvent of a hydrophilic organic solvent and a hydrophobic organic solvent, a polymeric stabilizer, a polymerization initiator, and an unsaturated monomer is heated, and, at least after the heating has started, the pH of the synthesis solution is adjusted to 5-9 inclusive to perform solution polymerization: (1) the average (L AV ) length (L) in a two-dimensional projection diagram obtained by irradiating the particles with light from a direction orthogonal to the longitudinal direction is 0.1-80 μm; (2) the average (D AV ) breadth (D) in the two-dimensional projection diagram obtained by irradiating the particles with light from the direction orthogonal to the longitudinal direction is 0.05-40 μm; and (3) the average (P AV ) aspect ratio (L/D) calculated from the length (L) and the breadth (D) is 1.5-30.