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|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||260/486R ; 252/437 ; 252/459 ; 260/530N|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 21 인용 특허 : 0|
Methyl acrylate or a mixture of methyl acrylate with acrylic acid are prepared by passing through a fluidized bed of catalyst a gaseous mixture comprising acrolein, methanol and oxygen fed at the bottom of the catalytic bed. A further amount of methanol is fed at one intermediate point at least, between the top and bottom of the catalytic bed. The catalyst is defined by one of the general formulae: MoaVbMecOx MoaWdMecOy MoaVbWdMecOz WHEREIN Me is Cr, Mn, Fe, Co, Ni, Cu, Zn, Ag, Cd, Au, Hg, Na, Ba, Ca, Ce, Bi, Th, U, Pb, Sb, Sn, P or B; and wherein a is a...
A method for preparing methyl acrylate or a mixtUre of methyl acrylate and acrylic acid by contacting acrolein, methnol and oxygen with a catalyst, which comprises continuously delivering said methanol in part at the bottom of a bed of the fluidized catalyst as a gaseous mixture with a gaseous flow comprising said acrolein and oxygen and in part at at least one intermediate point between the top and bottom of the fluidized catalyst bed, said catalyst being selected from the group consisting of compounds defined by the following formulae: MoaVbMecOx MoaWd...