公开(公告)号：DE2703604C3

公开(公告)日：1981-06-19

申请号：DE2703604

申请日：1977-01-28

Applicant: SNAMPROGETTI S.P.A., MILANO, IT

Inventor： CORBELLINI, MARGHERITA, MILANO, IT ,  GRECO, ALBERTO, DRESANO, MILANO, IT

IPC: C08F4/00 ,  C01G23/00 ,  C01G23/02 ,  C01G31/00 ,  C01G37/00 ,  C01G45/00 ,  C01G49/00 ,  C08F4/06 ,  C08F4/16 ,  C08F4/20 ,  C08F4/60 ,  C08F4/62 ,  C08F4/64 ,  C08F10/00 ,  C08F36/00 ,  C08F110/02

公开(公告)号：DE2913793C3

公开(公告)日：1981-05-27

申请号：DE2913793

申请日：1979-04-05

Applicant: SNAMPROGETTI S.P.A., MILANO, IT

Inventor： LAGANA, VINCENZO ,  SAVIANO, FRANCESCO, MILANO, IT

IPC: C01C1/04 ,  C07C67/00 ,  C07C239/00 ,  C07C273/04 ,  C07C126/067 ,  C01C1/02

公开(公告)号：DE2811303C3

公开(公告)日：1981-05-21

申请号：DE2811303

申请日：1978-03-15

Applicant: SNAMPROGETTI S.P.A., MILANO, IT

Inventor： VIGLIA, AURELIO, MONTEROTONDO, ROMA, IT ,  FASCETTI, EUGENIO ,  PERRICONE, ELENA ,  DEGEN, LUDWIG, ROMA, IT

IPC: C12P13/00 ,  C07C273/18 ,  C07C275/24 ,  C12P13/04 ,  C12P41/00 ,  C12R1/07 ,  C12N9/14

Abstract: Enzymic complexes deriving from micro-organisms belonging to the Bacillaceae family using an hydantoin or a derivative thereof as inductor of the enzymic activity are used for hydrolysing racemic hydantoins into optically active aminoacids. The method of preparation is an enzymic hydrolysis fostered by the enzyme deriving from such special micro-organisms. The hydrolysis can be effected at a comparatively high temperature, which can reach even 60 DEG C.

公开(公告)号：DE2631048B2

公开(公告)日：1981-04-30

申请号：DE2631048

申请日：1976-07-09

Applicant: SNAMPROGETTI S.P.A., MILANO, IT

Inventor： DEGEN, LUDWIG, ROMA, IT ,  VIGLIA, AURELIO, MONTEROTONDO, ROMA, IT ,  FASCETTI, EUGENIO ,  PERRICONE, ELENA, ROMA, IT

IPC: C12N9/86 ,  C12P13/04 ,  C12P41/00 ,  C12R1/38 ,  C07C127/17

Abstract: A method is disclosed for preparing the "D" form of an optically active aminoacid derivative from a racemic hydantoin. The method of the invention comprises subjecting the racemic hydantoin to hydrolysis in the presence of an enzymatic complex derived from the strain of microorganisms of the genus Pseudomonas which is designated sp. 942 (CBS 145.75) or sp. 945 (CBS 146.75), the hydrolysis being effected at a temperature in the range of from 10.degree. to 60.degree.C., and at an alkaline pH in the range of from pH 7 to pH 10.

公开(公告)号：DK142361C

公开(公告)日：1981-03-30

申请号：DK132476

申请日：1976-03-25

Applicant: SNAMPROGETTI S.P.A.

Inventor： PAGANI G

IPC: C01C1/04 ,  C07C67/00 ,  C07C239/00 ,  C07C273/04 ,  C07C273/10

Abstract: In an integrated flexible installation for producing ammonia and urea, the improved method which consists in that a portion of the gaseous stream comprising carbon dioxide, hydrogen and nitrogen is fed to a complementary decarbonation area and then admixed with a portion of a similar, but non-decarbonated stream of gas prior to entering the carbon-dioxide-absorption unit. Liquid ammonia is recovered from a portion of the ammoniated aqueous solution used for abating the ammonia and sent to a distillation column to recover liquid ammonia therefrom.

公开(公告)号：DE2631869B2

公开(公告)日：1981-02-26

申请号：DE2631869

申请日：1976-07-15

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

Inventor： PAGANI, GIORGIO, MAILAND (ITALIEN)

IPC: B01D1/26 ,  B01D1/00 ,  B01D3/06 ,  C02F1/08 ,  F04F10/00 ,  G05D9/00 ,  C02F1/06

公开(公告)号：DE2834752C3

公开(公告)日：1981-02-12

申请号：DE2834752

申请日：1978-08-08

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

Inventor： MONTANARI, ROMOLO, SAN DONATO MILANESE ,  ANTONELLI, SERGIO, PESCHIERA DI BORROMEO

IPC: C07C7/08 ,  C07C1/00 ,  C07C7/00 ,  C07C7/10 ,  C07C15/02 ,  C07C67/00 ,  C10G21/00 ,  C10G21/28

Abstract: A method for the removal of aromatic hydrocarbon from mixtures containing non-aromatic hydrocarbon by liquid-liquid extraction and extractive distillation is described. Isoenthalpic expansion of the rectification column bottom solvent stream and addition of water to the selective solvent can be used to reduce heat consumption.

公开(公告)号：DK141760C

公开(公告)日：1980-11-03

申请号：DK311676

申请日：1976-07-09

Applicant: SNAMPROGETTI S.P.A.

Inventor： DEGEN L ,  ZAFFARONI P ,  FORMICONI L ,  SENNI A

IPC: C12N1/00 ,  C12N1/12 ,  C12N1/32 ,  C12R1/89

公开(公告)号：DE2622938B2

公开(公告)日：1980-08-28

申请号：DE2622938

申请日：1976-05-21

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

Inventor： BERTI, SPARTACO, SAN DONATO MILANESE, MAILAND (ITALIEN)

IPC: B01D45/12 ,  B01D46/02 ,  B01D50/00 ,  B04C5/02 ,  B04C5/04 ,  B04C5/12 ,  B04C5/28 ,  B04C9/00

公开(公告)号：DE2808831B2

公开(公告)日：1980-08-14

申请号：DE2808831

申请日：1978-03-01

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

Inventor： PAGANI, GIORGIO ,  LAGANA, VINCENZO ,  SAVIANO, FRANCESCO, SEGRATE, MAILAND

IPC: C01B3/02 ,  C01C1/02 ,  C01C1/04 ,  C07C67/00 ,  C07C239/00 ,  C07C273/10 ,  C07C126/02