公开(公告)号：DE2744828B2

公开(公告)日：1979-06-21

申请号：DE2744828

申请日：1977-10-05

Applicant: SNAMPROGETTI S.P.A., MAILAND (ITALIEN)

Inventor： RE, LUCIANO ,  BRANDT, ALBERTO ,  BASSIGNANI, LUCIANO, PASSO CORESE, RIETI

IPC: C07C69/716 ,  C07C69/738 ,  C07C69/67 ,  C07C67/00

Abstract: An operationally simple and economical process for preparing alpha-oxoesters is provided by reacting an acetylenic compound of formula R-C 3BOND C-OR' with an oxidizing mixture composed of osmium tetroxide and an alkaline or alkaline earth chlorate and recovering the osmium tetroxide at the end of the reaction.

公开(公告)号：DE2646733B2

公开(公告)日：1979-06-21

申请号：DE2646733

申请日：1976-10-15

Applicant: SNAMPROGETTI S.P.A., MAILAND (ITALIEN)

Inventor： MANARA, GIOVANNI ,  FATTORE, VITTORIO ,  NOTARI, BRUNO

IPC: C07B61/00 ,  B01J23/72 ,  B01J31/00 ,  B01J31/22 ,  C07C67/00 ,  C07C231/00 ,  C07C231/06 ,  C07C103/133 ,  C07C102/08

Abstract: In the reaction of conversion of nitriles to amides, more particularly, but not exclusively, acrylonitrile to acrylamide, the improvement consisting in the adoption, as a catalyst, of a copper-based catalyst which is prepared by reacting an organic copper chelate with aluminum-alkyl and/or an aluminum hydride. Higher yields and higher selectivity are obtained over the usual copper-based catalysts.

公开(公告)号：DE2513925C3

公开(公告)日：1979-06-13

申请号：DE2513925

申请日：1975-03-27

Applicant: SNAMPROGETTI S.P.A., MAILAND (ITALIEN)

Inventor： LAGANA, VINCENZO, DR., MAILAND ,  ZARDI, UMBERTO, DR., SAN DONATO MILANESE

IPC: B01J2/02 ,  B01D47/10 ,  B01J2/00 ,  B01J2/04 ,  B01J19/00 ,  C05C9/00 ,  B01D47/00

Abstract: Urea in powder, formed in the course of a prilling opration in which molten urea is delivered to a prilling tower adjacent its upper end for the formation of droplets which descend to the bottom of the prilling tower through a countercurrent stream of cooling air delivered to the prilling tower adjacent its lower end and which entrains that urea powder, is recovered by withdrawing the stream of air and urea powder from the upper end of the prilling tower and feeding it to an ejector connected with a collecting tank. Motive power is supplied to the ejector by feeding an aqueous liquid to it and that liquid transports the urea constituting the powder to a collecting tank from which the urea is recovered.

公开(公告)号：DE2521470C3

公开(公告)日：1979-04-26

申请号：DE2521470

申请日：1975-05-14

Applicant: SNAMPROGETTI S.P.A., MAILAND (ITALIEN)

Inventor： RE, LUCIANO, DR. ,  CACIAGLI, VALERIO ,  BIANCHI, GIANCARLO ELETTI, DR.

IPC: C07D303/48 ,  C07D303/16 ,  C07D301/14

公开(公告)号：DE2065779B2

公开(公告)日：1979-01-04

申请号：DE2065779

申请日：1970-07-16

Applicant: SNAMPROGETTI S.P.A., MAILAND (ITALIEN)

Inventor： PARET, GIANCARLO, DR., MAILAND ,  CINELLI, ERMANNO, DR., SAN DONATO MILANESE

IPC: B01D3/40 ,  B01D11/04 ,  C07C1/00 ,  C07C7/00 ,  C07C7/08 ,  C07C7/10 ,  C07C15/02 ,  C07C67/00 ,  C10G7/08 ,  C10G21/00 ,  C10G21/20

Abstract: A multi-stage countercurrent process for the solvent extraction of aromatic hydrocarbons from a mixed feed stock is disclosed wherein the feed is contacted with a keto- or aldo-morpholine and extracted in a first stage, extract from the first stage is purified in a second stage by countercurrent contact with an overhead fraction from a third stage wherein the second stage extract is distilled, and rectification is effected in a fourth stage wherein water is refluxed and a part of the water, obtained as reflux free of solvent, is vaporized and recycled to the bottom of this rectification stage to recover the sensible heat of lean solvent.

公开(公告)号：DE2521470B2

公开(公告)日：1978-08-31

申请号：DE2521470

申请日：1975-05-14

Applicant: SNAMPROGETTI S.P.A., MAILAND (ITALIEN)

Inventor： RE, LUCIANO, DR. ,  CACIAGLI, VALERIO ,  BIANCHI, GIANCARLO ELETTI, DR.

IPC: C07D303/48 ,  C07D303/16 ,  C07D301/14

公开(公告)号：DE2362944C3

公开(公告)日：1978-08-24

申请号：DE2362944

申请日：1973-12-18

Applicant: SNAMPROGETTI S.P.A., MAILAND (ITALIEN)

Inventor： PAGANI, GIORGIO, DR., MAILAND (ITALIEN)

IPC: B01J23/00 ,  C07B61/00 ,  C07C27/06 ,  C07C29/151 ,  C07C29/154 ,  C07C41/00 ,  C07C41/01 ,  C07C43/04 ,  C07C67/00

公开(公告)号：DE2631045C3

公开(公告)日：1978-08-03

申请号：DE2631045

申请日：1976-07-09

Applicant: SNAMPROGETTI S.P.A., MAILAND (ITALIEN)

Inventor： PROSPERI, GIULIO, ROM ,  MARCONI, WALTER, SAN DONATO MILANESE, MAILAND ,  GIOVENCO, SILVIA, ROM ,  MORISI, FRANCO, SAN GIOVANNI IN PERSICETO, BOLOGNA

IPC: C12N9/02 ,  C07J1/00 ,  C07J5/00 ,  C12N11/04 ,  C12N11/12 ,  C12P1/00 ,  C12P13/06 ,  C12P33/06 ,  C12Q1/26 ,  D01F1/02 ,  C07G7/02 ,  G01N31/14

Abstract: A method is disclosed for improving the activity of oxireductase enzymes, the improvement consisting in that an enzyme and a previously functionalized coenzyme are embedded in a filamentary structure, the coenzyme having previously been attached to a water-soluble, high-molecular-weight polymer.

公开(公告)号：DE2615594B2

公开(公告)日：1978-07-20

申请号：DE2615594

申请日：1976-04-09

Applicant: SNAMPROGETTI S.P.A., MAILAND (ITALIEN)

Inventor： CECERE, FRANCESCO, MONTEROTONDO ,  MARCONI, WALTER, SAN DONATO MILANESE, MAILAND ,  MORISI, FRANCO, SAN GIOVANNI, PERSICETO, BOLOGNA ,  RAPPUOLI, BRUNO, ROM

IPC: C07B43/04 ,  B01J20060101 ,  B01J31/00 ,  B01J31/10 ,  C07B31/00 ,  C07B61/00 ,  C07C20060101 ,  C07C67/00 ,  C07C227/00 ,  C07C227/18 ,  C07C227/20 ,  C07C227/32 ,  C07C229/02 ,  C07C229/08 ,  C07C229/12 ,  C07C229/14 ,  C07C229/36 ,  C07C313/00 ,  C07C319/20 ,  C07C323/58 ,  C07G20060101 ,  C07C99/00

公开(公告)号：DE2707404B2

公开(公告)日：1978-07-13

申请号：DE2707404

申请日：1977-02-21

Applicant: SNAMPROGETTI S.P.A., MAILAND (ITALIEN)

Inventor： RE, LUCIANO ,  BRANDT, ALBERTO ,  BASSIGNANI, LUCIONA, PASSO CORESE, RIETI

IPC: C07D499/46 ,  A61K31/397 ,  A61K31/43 ,  A61P31/04 ,  C07D205/08 ,  C07D205/095 ,  C07D205/10 ,  C07D499/00 ,  C07D499/06 ,  C07D499/21 ,  C07D499/44 ,  C07D499/60 ,  C07D499/02

Abstract: A method is disclosed for the preparation of a class of dehydropenicillins by irradiating substituted 4-acylmethylthio-2-azetidinones and subsequently subjecting the as-obtained product to cyclization. Processing conditions and analytical data are reported.