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公开(公告)号：DE2529318C3
公开(公告)日：1979-01-18
申请号：DE2529318
申请日：1975-07-01
Applicant: SNAMPROGETTI S.P.A., MAILAND (ITALIEN)
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公开(公告)号：DE2065780B2
公开(公告)日：1978-12-14
申请号：DE2065780
申请日：1970-07-16
Applicant: SNAMPROGETTI S.P.A., MAILAND (ITALIEN)
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.
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公开(公告)号：DE2654928B2
公开(公告)日：1978-10-05
申请号：DE2654928
申请日：1976-12-03
Applicant: SNAMPROGETTI S.P.A., MAILAND (ITALIEN)
IPC: C07C275/06 , C07C67/00 , C07C239/00 , C07C273/18 , C07C127/00 , C07D233/32
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公开(公告)号：DE2630769B2
公开(公告)日：1978-09-21
申请号：DE2630769
申请日：1976-07-08
Applicant: SNAMPROGETTI S.P.A., MAILAND (ITALIEN)
Inventor： RESCALLI, CARLO , PACIFICO, ANTONIO , FARACI, ROCCO
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公开(公告)号：DE2605583C3
公开(公告)日：1978-06-15
申请号：DE2605583
申请日：1976-02-12
Applicant: SNAMPROGETTI S.P.A., MAILAND (ITALIEN)
Abstract: The invention relates to a device for absorbing impact energy and more particularly to a device to be mounted to a conventional guard rail structure. The device consists of a skein of yarn of undrawn synthetic polymer and preferably nylon 6. The yarn is passed through the holes of a plate which, in turn, is mounted in a gap of a conventional guard rail structure. The weight of the skein is related to the amount of impact energy to be absorbed.
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Patent Agency Ranking
公开(公告)号：DE2625028B2
公开(公告)日：1978-05-18
申请号：DE2625028
申请日：1976-06-03
Applicant: SNAMPROGETTI S.P.A., MAILAND (ITALIEN)
Inventor： MARCONI, WALTER, SAN DONATO MILANESE, MAILAND , BARTOLI, FRANCESCO, ROM , GULINELLI, SILVIO , ZACCARDELLI, DELIO , MORISI, FRANCO, SAN GIOVANNI IN PERSICETO
Abstract: A method is disclosed for embedding sequestering agents in filamentary structures, the method comprising the steps of preparing an emulsion formed by an aqueous or nearly aqueous solution of the sequestering agent and a solution of the filament-forming polymer in an appropriate solvent, and spinning the emulsion in a coagulation bath.
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公开(公告)号：DE2216812B2
公开(公告)日：1975-10-02
申请号：DE2216812
申请日：1972-04-07
Applicant: SNAMPROGETTI S.P.A., MAILAND (ITALIEN)
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公开(公告)号：DE8914652U1
公开(公告)日：1990-03-22
申请号：DE8914652
申请日：1989-12-13
Applicant: SNAMPROGETTI S.P.A., MAILAND/MILANO, IT
IPC: B02C17/06
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公开(公告)号：DE3811150C2
公开(公告)日：1990-01-04
申请号：DE3811150
申请日：1988-03-31
Applicant: SNAMPROGETTI S.P.A., MAILAND/MILANO, IT
Inventor： RESCALLI, CARLO, SAN DONATO MILANESE, MAILAND/MILANO, IT , RICCI, RIZIERO, CORTEMAGGIORE, PIACENZA, IT , SCAZZOSI, ADRIANO, CORBETTA, MAILAND/MILANO, IT , CIANCI, FLAVIO, SAN DONATO MILANESE, MAILAND/MILANO, IT
Abstract: A process is disclosed for the dehydration of a mixture of methanol and higher alcohols, containing 20 to 80% by weight of methanol, 1 to 60% by weight of at least a higher alcohol selected from those containing from 2 to 10 carbon atoms, 1 to 50% by weight of water and 0.1 to 10% by weight of hydrocarbons and/or of oxygen-containing organic compounds different from alcohols, which process comprises the following steps: p0 (a) feeding to a first rectification tower the mixture of methanol and higher alcohols to be dehydrated, a gaseous stream being discharged from the tower head, which contains a portion of the hydrocarbons and/or of the oxygen-containing organic compounds different from the alcohols; from a side point at a level higher than 2/3 of the tower height, a stream containing methanol and possibly ethanol being drawn; and from the tower bottom a stream being obtained with a methanol, and possibly ethanol, and having a content not larger than 10% by weight; (b) separating at least once the stream obtained from the bottom of the first column into two phases, one of which being aqueous, and the other phase being organic; (c) feeding the organic phase to a second tower of azeotropic distillation, using a liquid-vapor and liquid-liquid separation agent; at the bottom an anhydrous stream being obtained, which contains the higher alcohol(s); and from the tower head a stream being obtained, which contains methanol, possibly ethanol and/or propanol, water, and the separation agent used, which is added to the stream obtained from the bottom of the first tower; and (d) feeding the aqueous phase to a third rectification tower; from the bottom a stream being removed which contains water; and overhead a stream being recovered, which is enriched with methanol and higher alcohols, which is recycled by being added to the mixture of methanol and higher alcohols to be dehydrated before being fed to the first rectification tower.
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公开(公告)号：DE2520459C3
公开(公告)日：1989-05-18
申请号：DE2520459
申请日：1975-05-07
Applicant: SNAMPROGETTI S.P.A., MAILAND/MILANO, IT
Inventor： MANCINI, GIUSEPPE, MELEGNANO, IT , IMPARATO, LUIGI, MAILAND/MILANO, IT , SCHILLANI, DARIO, PESCHIERA BORROMEO, IT
IPC: C10M105/36 , C07C20060101 , C07C67/00 , C07C67/08 , C07C69/00 , C07C69/02 , C07C69/18 , C07C69/22 , C07C69/30 , C07C69/33 , C09K3/00 , C10M20060101 , C10M105/32 , C10M105/38 , C10M129/74 , C10M169/00 , C10N20/02 , C10N30/02 , C10N30/08 , C10N30/10 , C10N40/25
Abstract: This invention relates to esters prepared by reacting A. A MIXTURE OF TRI-, TETRA- AND HEXAFUNCTIONAL POLYOLS IN WHICH THE MOLAR RATIO OF THE TRIFUNCTIONAL POLYOL TO THE OTHER POLYOLS IS FROM ABOUT 0.5:1 TO 10:1 AND IN WHICH THE MOLAR RATIO OF THE HEXAFUNCTIONAL POLYOL TO THE TETRAFUNCTIONAL POLYOL IS FROM ABOUT 0 TO 1.2:
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