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公开(公告)号：US3876696A
公开(公告)日：1975-04-08
申请号：US26033972
申请日：1972-06-06
Applicant: SNAM PROGETTI
Inventor： GUADALUPI MARIO , ZARDI UMBERTO
IPC: C07C273/04 , C07C177/00
CPC classification number: C07C273/04 , Y02P20/142
Abstract: A process for the production of urea including reacting ammonia and carbon dioxide in a urea synthesis reactor at elevated temperature and pressure to form urea and ammonium carbamate followed by decomposing the ammonium carbamate into gaseous carbon dioxide and ammonia in a thin film heater at the same temperature and pressure as in the urea synthesis reactor, recycling the ammonia and carbon dioxide to the urea synthesis reactor and recovering an aqueous urea solution.
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公开(公告)号：US3872069A
公开(公告)日：1975-03-18
申请号：US33994073
申请日：1973-03-09
Applicant: SNAM PROGETTI
Inventor： PRIOLA ALDO , CESCA SEBASTIANO , FERRARIS GIUSEPPE
Abstract: A process is disclosed whereby butyl rubber of high molecular weight and excellent physical characteristics is readily prepared by copolymerizing isobutylene and isoprene in the presence of a catalyst system consisting of: A. A METALORGANIC COMPOUND (E.G., Al Et2 Cl); and B. AN ORGANIC COMPOUND HAVING FROM 1 TO 24 CARBON ATOMS AND AN ELECTRON AFFINITY VALUE IN THE RANGE FROM 0.3 TO 2 ELECTRON VOLTS (E.G., 1.3.5.-TRINITROBENZENE).
Abstract translation: 公开了一种方法，其中通过在由以下组成的催化剂体系的存在下异丁烯和异戊二烯共聚来容易地制备高分子量和优异物理特性的丁基橡胶：
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公开(公告)号：US3847902A
公开(公告)日：1974-11-12
申请号：US32248173
申请日：1973-01-10
Applicant: SNAM PROGETTI
Inventor： SANTAMBROGIO A , PERROTTI E
IPC: C07C45/54 , C07D201/02 , C07D41/06
CPC classification number: C07D201/02 , C07C45/54 , C07C49/417
Abstract: 1. THE METHOD OF PREPARING, AS END PRODUCTS, CAPROLACTAM AND DICYCLOHEXYL KETONE WHEREIN AN ALKALI METAL SALT OF E-CYCLOHEXYL AMIDOCAPROIC ACID IS PYROLYZED BY HEATING TO A TEMPERATURE IN THE RANGE OF 300-500*C. AND A DISTILLATE CONTAINING SAID END PRODUCTS IS RECOVERED.
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公开(公告)号：US3846468A
公开(公告)日：1974-11-05
申请号：US12119371
申请日：1971-03-04
Applicant: SNAM PROGETTI
Inventor： PERROTTI E , CIPRIANI G
CPC classification number: C07C68/005 , C07C69/96
Abstract: A process is described whereby carbonic acid esters, i.e., alkyl, aryl and cycloalkyl carbonates, are prepared by reacting an alcohol with oxygen and carbon monoxide in the presence of a catalyst selected from copper complexed with an organic molecule.
Abstract translation: 描述了一种方法，其中碳酸酯，即烷基，芳基和环烷基碳酸酯，通过醇与氧和一氧化碳在选自与有机分子络合的铜的催化剂存在下反应来制备。
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公开(公告)号：US3843680A
公开(公告)日：1974-10-22
申请号：US18507571
申请日：1971-09-30
Applicant: SNAM PROGETTI
IPC: C07D209/08 , C07D27/56
CPC classification number: C07D209/08
Abstract: Di- or polynuclear heterocyclic compounds are prepared through an oxidative dehydrocyclization of a substituted monocyclic aromatic compound.
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Patent Agency Ranking
公开(公告)号：US3824252A
公开(公告)日：1974-07-16
申请号：US17786671
申请日：1971-09-03
Applicant: SNAM PROGETTI
IPC: C07D209/08 , C07D27/56
CPC classification number: C07D209/08
Abstract: PROCESS FORPRODUCING INDOLE AND ITS DERIVATIVES BY OXIDIZING AROMATIC AMINES WITH AN ORAGANIC NITROCOMPOUND AT TEMPERATURES RANGING FROM 300*C. TO 700*C. IN THE VAPOR PHASEIN THE PRESENCE OF CONTACT MASSES.
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公开(公告)号：US3791944A
公开(公告)日：1974-02-12
申请号：US3791944D
申请日：1972-05-12
Applicant: SNAM PROGETTI
Inventor： ERCOLI R , GUAINAZZI M , SILVESTRI G
CPC classification number: C08F4/00
Abstract: ALPHA OLEFINS ARE POLYMERIZED IN AN ACTIVATED, ANHYDROUS HALOGENATED HYDROCARBON. THE ANHYDROUS HALOGENATED HYDROCARBON IS ACTIVATED BY PASSING THROUGH IT AN ELECTRIC CURRENT USING AN ALUMINUM OR ALUMINUM ALLOY ANODE. THE ALPHA OLEFIN IS THEN PASSED INTO THE ACTIVATED HALOGENATED HYDROCARBON AND POLYMERIZED.
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88.发明授权
公开(公告)号：US3773784A
公开(公告)日：1973-11-20
申请号：US3773784D
申请日：1970-10-16
Applicant: SNAM PROGETTI
Inventor： MAURI M , MILANESE S , MOGGI P
IPC: B01J23/18 , B01J23/28 , B01J23/31 , B01J23/84 , B01J23/843 , B01J27/00 , B01J27/02 , C07B61/00 , C07D209/04 , C07D209/08 , C07D307/79 , C07D333/54 , C07D333/72 , C07D27/56 , C07D5/32 , C07D63/20
CPC classification number: C07D307/79 , B01J23/18 , B01J23/28 , B01J23/31 , B01J23/84 , B01J23/8435 , B01J27/02 , C07D209/04 , C07D209/08 , C07D333/54
Abstract: INDOLES, BENZOTHIOPHENES AND BENZOFURANS ARE PREPARED BY OXIDATIVE DEHYDROCYCLIZATION OF SUBSTITUTED AROMATIC COMPOUNDS IN THE PRESENCE OF AN OXYGEN-CONTAINING GAS AND AN ACTIVATED SILICA CATALYST.
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89.发明授权Apparatus for determining the compression strength of spheroidal material made of uranium, thorium and plutonium mixed oxides and the like 失效用于测定铀，钍和钚混合氧化物的等离子体材料的压缩强度的装置和类似物
公开(公告)号：US3771357A
公开(公告)日：1973-11-13
申请号：US3771357D
申请日：1970-12-18
Applicant: SNAM PROGETTI
Inventor： GAMBINI A
CPC classification number: G01N3/08 , G01N2203/0019
Abstract: An apparatus for automatically determining the compression strength of spheroidal materials comprises an electromagnet having a vertically moving element and adjustment means to provide an air gap, a power winding for exciting the moving element magnetically coupled to a control winding which generates a pulse stopping the exciting current to the power winding when the spheroidal material breaks and means for amplifiying and detecting the pulse generated by the control winding and correlating the value of the excitation current with the compression strength of the sample.
Abstract translation: 用于自动确定球形材料的压缩强度的装置包括具有垂直移动元件的电磁体和用于提供气隙的调节装置，用于激励与控制绕组磁耦合的运动元件的功率绕组，该控制绕组产生停止励磁电流的脉冲 当球形材料断裂时到功率绕组，以及用于放大和检测由控制绕组产生的脉冲的装置，并将激励电流的值与样品的压缩强度相关联。
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公开(公告)号：US3764635A
公开(公告)日：1973-10-09
申请号：US3764635D
申请日：1971-04-14
Applicant: SNAM PROGETTI
CPC classification number: C07C6/04 , B01J23/31 , C07C2521/04 , C07C2521/08 , C07C2521/12 , C07C2523/31
Abstract: A process for disproportionating olefins is disclosed which employs a catalyst which includes tungsten and bismuth in the form of oxides or other forms.
Abstract translation: 公开了一种用于歧化烯烃的方法，其采用包含氧化物或其它形式的钨和铋的催化剂。
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