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公开(公告)号:DE2630760C2
公开(公告)日:1981-10-15
申请号:DE2630760
申请日:1976-07-08
Applicant: SNAMPROGETTI S.P.A., MILANO, IT
IPC: C07C45/26 , B01J31/08 , B23K35/40 , C07C41/54 , C07C45/00 , C07C45/42 , C07C45/51 , C07C45/82 , C07C47/06 , C07C49/04 , C07C49/08 , C07C67/00
Abstract: A method is disclosed for preparing carbonyl compounds from hydrocarbon streams coming from steam-cracking installations, the improvement consisting in that an alcohol is added to such a stream in a first reaction area and in the presence of an acidic ion-exchange resin the acidic centers of which have totally been exchanged with mercuric ions and with ions of alkali metals or alkaline earth metals, the resultant product being rectified to separate it from the hydrocarbon stream and then hydrolyzed in a second reaction area in the presence of an acidic ion-exchange resin and finally recovered by rectification.
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公开(公告)号:DE2631898C3
公开(公告)日:1981-05-21
申请号:DE2631898
申请日:1976-07-15
Applicant: SNAMPROGETTI S.P.A., MILANO, IT
Inventor: PAGANI, GIORGIA, MAILAND, IT
Abstract: In an ammonia synthesis column, the combination of a tube bundle heat exchanger and a boiler with two superposedly arranged catalyst beds permits to recover considerable amounts of reaction heat, the flow of the gases being reacted running in a radial direction.
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公开(公告)号:DE2914018B2
公开(公告)日:1981-05-14
申请号:DE2914018
申请日:1979-04-06
Applicant: SNAMPROGETTI S.P.A., MILANO, IT
Inventor: BARTOLI, FRANCESCO, ROMA, IT , MARCONI, WALTER, SAN DONATO MILANESE, IT , MORISI, FRANCO , PITTALIS, FRANCESCO, ROMA, IT
Abstract: Polyamide materials for the construction of protheses and surgical sundries are made biocompatible by inducing a superficial hydrolysis by treating such materials, either raw or in the form of shaped articles, with a normal multiple solution of hydrogen chloride. Thrice normal or fourfold normal solutions are preferred and the treatment time being a function of the temperature. At human body temperature (37 DEG C.) a treatment time from 30 to 60 minutes will do.
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公开(公告)号:DE2808831C3
公开(公告)日:1981-04-16
申请号:DE2808831
申请日:1978-03-01
Applicant: SNAMPROGETTI S.P.A., MILANO, IT
Inventor: PAGANI, GIORGIO , LAGANA, VINCENZO, MAILAND, IT , SAVIANO, FRANCESCO, SEGRATE, MAILAND, IT
IPC: C01B3/02 , C01C1/02 , C01C1/04 , C07C67/00 , C07C239/00 , C07C273/10 , C07C126/067
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公开(公告)号:DE2525825C3
公开(公告)日:1980-10-23
申请号:DE2525825
申请日:1975-06-10
Applicant: SNAMPROGETTI S.P.A., MAILAND (ITALIEN)
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公开(公告)号:DE2411555C3
公开(公告)日:1980-10-23
申请号:DE2411555
申请日:1974-03-11
Applicant: SNAMPROGETTI S.P.A., MAILAND (ITALIEN)
Inventor: GIROTTI, PIERLEONE , TESEI, RENATO , FLORIS, TELEMACO
IPC: C10M143/08 , C08F8/00 , C08F8/04 , C10M143/04 , C10M143/06 , C10M169/00 , C10N30/02 , C10N60/02
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公开(公告)号:DE2521963B2
公开(公告)日:1980-10-09
申请号:DE2521963
申请日:1975-05-16
Applicant: SNAMPROGETTI S.P.A., MAILAND (ITALIEN)
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公开(公告)号:DE2811303B2
公开(公告)日:1980-07-31
申请号:DE2811303
申请日:1978-03-15
Applicant: SNAMPROGETTI S.P.A., MAILAND (ITALIEN)
IPC: C12P13/00 , C07C273/18 , C07C275/24 , C12P13/04 , C12P41/00 , C12R1/07 , C07G7/028 , C12D13/10 , C12D13/06
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.
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公开(公告)号:DE2913793B2
公开(公告)日:1980-06-04
申请号:DE2913793
申请日:1979-04-05
Applicant: SNAMPROGETTI S.P.A., MAILAND (ITALIEN)
Inventor: LAGANA, VINCENZO , SAVIANO, FRANCESCO
IPC: C01C1/04 , C07C67/00 , C07C239/00 , C07C273/04 , C07C126/02 , C01C1/02
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公开(公告)号:DE2644283C3
公开(公告)日:1980-05-29
申请号:DE2644283
申请日:1976-09-30
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