IPC분류정보
| 국가/구분 |
United States(US) Patent
등록
|
| 국제특허분류(IPC7판) |
|
| 출원번호 |
US-0521016
(1974-11-05)
|
| 우선권정보 |
IT-0031746 (1973-11-28) |
|
발명자
/ 주소 |
- Ferlazzo Natale (Segrate (Milan) IT) Buzzi Gian Fausto (Arona (Novara) IT) Ghirga Marcello (Bresso (Milan) IT) Calcagno Benedetto (Milan IT)
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| 출원인 / 주소 |
- Societa\Italiana Resine S.I.R. S.p.A. (Milan IT 03)
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| 인용정보 |
피인용 횟수 :
21 인용 특허 :
0 |
초록
▼
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, bet
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 value from 6 to 12, b from 1 to 6, c from 0 to 5, d from 1 to 6, x from 20.5 to 58.5, y from 21 to 61.5 and z from 23.5 to 76.5.
대표청구항
▼
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
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 MoaWdMecOy MoaVbWdMecOz wherein Me is an element selected from the group consisting of chromium, manganese, iron, cobalt, nickel, copper, zinc, silver, cadmium, gold, mercury, sodium, barium, calcium, cerium, bismuth, thorium, uranium, lead, antimony, tin, phosphorus and boron; and wherein a, b, c, d, x, y, z are respectively: a from 6 to 12, b from 1 to 6, c from 0 to 5, d from 1 to 6, x from 20.5 to 58.5, y from 21 to 61.5 and z from 23.5 to 76.5.
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