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    • 3. 发明授权
    • Process for the production of carbonates that melt at a high temperature
    • 用于生产在高温下熔化的碳酸酯的方法
    • US06515145B2
    • 2003-02-04
    • US09752118
    • 2000-12-29
    • James R. Machac, Jr.Edward T. MarquisHoward P. Klein
    • James R. Machac, Jr.Edward T. MarquisHoward P. Klein
    • C07D31712
    • C07C68/04Y02P20/142C07C69/96
    • A method for preparing carbonates includes reacting an alkylene oxide with carbon dioxide in the presence of a catalyst and a non-protic solvent. The method further includes having the boiling point of the solvent greater than about 70 ° C., and removing the solvent from the reaction product. The solvent used in the various forms of the present invention can be glyme, diglyme, tetraglyme, cumene, toluene, tetrahydofuran, cyclohexanone, ethylbenzene, aromatic hydrocarbons, or ethers. The catalyst used can be a tetraalkyl ammonium halide, such as tetraethyl ammonium bromide. The alkylene oxide that can be used in the invention can include Bisphenol A, Bisphenol B, Bisphenol F, alkylene oxides that have alkyl substituent groups, alkylene oxides that have aryl substituent groups, and alkylene oxides that contain both alkyl and aryl substituent groups. An essentially solvent free carbonate can be prepared by flash removal of the solvent.
    • 制备碳酸酯的方法包括在催化剂和非质子溶剂的存在下使烯化氧与二氧化碳反应。 该方法还包括使溶剂的沸点大于约70℃,并从反应产物中除去溶剂。 用于本发明各种形式的溶剂可以是甘醇二甲醚,二甘醇二甲醚,四甘醇二甲醚,枯烯,甲苯,四氢呋喃,环己酮,乙苯,芳烃或醚。 所使用的催化剂可以是四烷基卤化铵,例如四乙基溴化铵。 可用于本发明的环氧烷可以包括双酚A,双酚B,双酚F,具有烷基取代基的烯化氧,具有芳基取代基的烯化氧和含有烷基和芳基取代基的烯化氧。 可以通过快速除去溶剂来制备基本上无溶剂的碳酸盐。