[EN] MICROWAVE ASSISTED SYNTHESIS OF DEHYDRATED SUGAR DERIVATIVES HYDROXYMETHYLFURFURAL, LEVULINIC ACID, ANHYDROSUGAR ALCOHOLS, AND ETHERS THEREOF<br/>[FR] SYNTHÈSE ASSISTÉE PAR RAYONNEMENT MICROONDES DES DÉRIVÉS DE SUCRES DÉSHYDRATÉS HYDROXYMÉTHYLFURFURAL, ACIDE LÉVULINIQUE, ALCOOLS DE SUCRE ANHYDRES ET LEURS ÉTHERS
申请人:ARCHER DANIELS MIDLAND CO
公开号:WO2012015616A1
公开(公告)日:2012-02-02
Methods for the production of dehydrated sugars and derivatives of dehydrated sugars using microwave (MW) irradiation and methods of purifying the same are described. The dehydrated sugars derivatives include 5-hydroxymethyl-2-furfural (HMF) and anhydrosugar alcohols such as sorbitans and isosorbide. The derivatives include HMF ethers, levulinic acid esters, and ether derivatives of the anhydrosugar alcohols. The described methods require lower reaction temperatures and shorter reaction times than similar non microwave mediated reactions known in the art. Typical reaction conditions are 120-210C, and typical reaction times are 30 minutes or less.
MICROWAVE ASSISTED SYNTHESIS OF DEHYDRATED SUGAR DERIVATIVES HYDROXYMETHYLFURFURAL, LEVULINIC ACID, ANHYDROSUGAR ALCOHOLS, AND ETHERS THEREOF
申请人:Howard Stephen J.
公开号:US20130123520A1
公开(公告)日:2013-05-16
Methods for the production of dehydrated sugars and derivatives of dehydrated sugars using microwave (MW) irradiation and methods of purifying the same are described. The dehydrated sugars derivatives include 5-hydroxymethyl-2-furfural (HMF) and anhydrosugar alcohols such as sorbitans and isosorbide. The derivatives include HMF ethers, levulinic acid esters, and ether derivatives of the anhydrosugar alcohols. The described methods require lower reaction temperatures and shorter reaction times than similar non microwave mediated reactions known in the art. Typical reaction conditions are 120-210° C., and typical reaction times are 30 minutes or less.
A catalyst component for polymerization of olefins which is prepared by contacting a product obtained by contacting (A) a magnesium alkoxide, (B) a silicon compound having the hydrogen-silicon bond, (C) a titanium compound with one another, with (D) (a) a hydrocarbon, (b) a halogenated hydrocarbon, and/or (c) a halide of an element selected from the elements of Groups IIIa, IVa, and Va of the Periodic Table.
Process for producing a catalyst component for polymerization of olefins
申请人:Tonen Corporation
公开号:EP0184347A2
公开(公告)日:1986-06-11
A process for producing a catalyst component for polymerization of olefins which comprises contacting (a) a metal oxide with (b) a magnesium alkoxide, contacting the resulting contact product with (c) a halogen-containing compound, and finally contacting the resulting contact product with (d) a titanium compound.
A catalyst component for olefin polymerization which is formed by contacting (A) a metal oxide, (B) an alkoxyl group-containing magnesium compound, (C) a halogen element or halogen-containing compound, (D) an electron donor compound, and (E) a titanium compound with one another.