公开(公告)号：US3694152A

公开(公告)日：1972-09-26

申请号：US3694152D

申请日：1969-10-13

Applicant: SNAM PROGETTI

Inventor： SERSALE RICCARDO ,  FRANCO ENRICO ,  AJELLO ROSARIO ,  COLELLA CARMINE

IPC: B01J29/08 ,  C01B33/00 ,  C01B33/26 ,  C01B39/02 ,  C01B39/20 ,  C01B33/28

CPC classification number: C01B33/2815 ,  Y10S423/21

Abstract: SYNTHETIC CRYSTALLINE ZEOLITES ARE PREAPRED BY TREATING NATURAL GLASSES, SUCH AS LIPARI PUMICE, AND SYNTHETIC GLASSES PREPARED BY MELTING A SUITABLE MIXTURE OF OXIDES OR SILICOALUMINATES WITH AN ALKALINE SOLUTION AT A TEMPERATURE WITHIN THE RANGE OF 50*C. TO 150*C. UNTIL THE CRYSTALLINE ZEOLITE FORMS. FAUJASITE IS PREPARED BY TREATING EACH OF PULVERIZED PUMICE AND A SYNTHETIC GLASS HAVING THE COMPOSITION 3NA2O.AL2O3.4SIO2 WITH A SODIUM HYDROXIDE SOLUTION AT AN ELEVATED TEMPERATURE.

公开(公告)号：US3676512A

公开(公告)日：1972-07-11

申请号：US3676512D

申请日：1971-01-22

Applicant: SNAM PROGETTI

Inventor： ARRIGHETTI SERGIO ,  VAJNA EUGENIO ,  CESCA SEBASTIANO

IPC: C08F210/00 ,  C07C1/00 ,  C07C1/32 ,  C07C2/50 ,  C07C13/28 ,  C07C13/43 ,  C07C35/29 ,  C07C45/69 ,  C07C47/445 ,  C07C67/00 ,  C08F36/00 ,  C08F210/16 ,  C07C5/24

CPC classification number: C07C47/445 ,  C07C1/326 ,  C07C2/50 ,  C07C13/42 ,  C07C13/43 ,  C07C35/29 ,  C07C45/69 ,  C07C2601/10 ,  C07C2601/14 ,  C07C2601/16 ,  C07C2602/42

Abstract: There are provided novel triene hydrocarbons, having at least two conjugated double bonds, and being of the general formula IN WHICH A is a radical consisting of a ring containing an endomethylene group; B may be both a linear alkadiene radical and a substituted and unsubstituted alkene or cycloalkene radical; Ro may be hydrogen, an aryl or an alkyl radical, n is a number ranging from 0 to 3; and m is 0 or 1. If n is not 0, m is 0; if n is 0, m is 0 or 1.

Abstract translation: 提供了具有至少两个共轭双键的新型三烯烃，并具有通式为A，其中A是由含有内亚甲基的环组成的基团; B可以是线性链二烯基团和取代和未取代的烯烃或环烯烃基团; Ro可以是氢，芳基或烷基，n是0-3的数; m为0或1.如果n不为0，则m为0; 如果n为0，m为0或1。

公开(公告)号：US3669591A

公开(公告)日：1972-06-13

申请号：US3669591D

申请日：1970-03-11

Applicant: SNAM PROGETTI

Inventor： FERMI ENZO ,  SASSANELLI FRANCESCO

IPC: B29C47/04 ,  B29C47/30 ,  D01D5/32 ,  D01D3/00

CPC classification number: B29C47/30 ,  B29C47/0014 ,  B29C47/04 ,  D01D5/32

Abstract: A SPINNING HEAD FOR MELT SPINNING OF COMPOSITE FILAMENTS COMPRISED OF TWO POLYMERS OF EQUAL SEMI-CIRCULAR CROSS-SECTION IN WHICH THE MATING FACES OF A DISTRIBUTION PLATE AND A SPINNERET PLATE FORM TWO SEPARATE ANNULAR CAVITIES EACH COMMUNICATING WITH A DIFFERENT POLYMER SUPPLY CONTAINED IN THE DISTRIBUTION PLATE. A PLURALITY OF EXTRUSION HOLES IN THE SPINNERET PLATE HAVE THEIR UPPER END PORTIONS OF SEMI-CIRCULAR CROSS-SECTION COMMUNICATION WITH ONE OF THE ANNULAR CAVITIES AND THE REMAINING PORTIONS OF CIRCULAR CROSS-SECTION COMMUNICATING WITH THE OTHER ANNULAR CAVITY.

公开(公告)号：US3646105A

公开(公告)日：1972-02-29

申请号：US3646105D

申请日：1969-12-18

Applicant: SNAM PROGETTI

Inventor： CESCA SEBASTIANO ,  ROGGERO ARNALDO ,  PRIOLA ALDO ,  CINELLI ERMANNO

IPC: C07C1/32 ,  C07C13/32 ,  C07C13/68 ,  C07C13/28

CPC classification number: C07C13/68 ,  C07C1/328 ,  C07C13/32 ,  C07C2601/10 ,  C07C2602/42 ,  C07C2603/86

Abstract: NEW TERMONOMERS ARE DISCLOSED WHICH ARE REPRESENTED BY THE FORMULA:

A-(CH2)N)-

WHEREIN A IS A RADICAL INCLUDING AT LEAST ONE RING HAVING AN ENDOMETHYLENE GROUP, B IS A CYCLODIENE RADICAL AND N IS 0-5.

公开(公告)号：US3510466A

公开(公告)日：1970-05-05

申请号：US3510466D

申请日：1967-07-12

Applicant: SNAM PROGETTI

Inventor： LUGLI GABRIELE ,  MAZZEI ALESSANDRO ,  MARCONI WALTER

IPC: C08F4/12 ,  C08F36/04 ,  C08D1/12 ,  C08F1/58

CPC classification number: C08F4/12 ,  C08F36/04 ,  C08F4/72

公开(公告)号：US3450776A

公开(公告)日：1969-06-17

申请号：US3450776D

申请日：1968-02-16

Applicant: SNAM PROGETTI

Inventor： CIO ALESSANDRO DI ,  MAURI MARCELLO MASSI

IPC: B01J23/44 ,  C07C33/042 ,  C07C29/00 ,  C07C31/12 ,  C07C31/18

CPC classification number: B01J23/44 ,  C07C33/042

公开(公告)号：US3424697A

公开(公告)日：1969-01-28

申请号：US3424697D

申请日：1965-10-19

Applicant: SNAM PROGETTI

Inventor： NOTARI BRUNO ,  MANARA GIOVANNI

IPC: B01J27/13 ,  C07C5/27 ,  B01J11/06

CPC classification number: C07C5/2724 ,  B01J27/13 ,  C07C5/2791 ,  C07C9/00 ,  C07C9/16

公开(公告)号：JPH0674932A

公开(公告)日：1994-03-18

申请号：JP7639693

申请日：1993-03-11

Applicant: AGIP SPA ,  SNAM PROGETTI ,  ENIRICERCHE SPA

Inventor： RUIJI RIBOORA ,  SEBASUCHIAANO DEIRIBERUTO ,  JIYAKOMO KAPITEERI ,  RUCHIO DEIBIAAZE

IPC: C23F13/00 ,  F16L58/00 ,  G01N17/02 ,  G01N27/26 ,  C23F13/22

Abstract: PURPOSE: To monitor the state and locate a protective coating by applying sine wave exciting currents of different frequency to a pipe line and determining presence of separated coating based on a corresponding voltage response. CONSTITUTION: Sine wave exciting currents of different frequency are applied from a signal generator 10 in a measuring unit 9 through a protrusion to a pipe line 1. A meter 13 detects a voltage response induced by the exciting current. A decision is made whether a defect 3 or a separation 5 is present in the protective coating 2 of the pipe line 1 based on the response of different amplitude to the sine wave of different frequency. In case of a defect 3, a significant variation can be recognized in the amplitude of voltage response when the frequency is varied in the range of 10-1Hz, for example. In case of a separation 5 due to corrosion, substantially invariant amplitude of voltage response is recognized. More specifically, application of sine wave of different frequency causes to spread the voltage response for the defect 3 and produces a substantially matched response for the separation 5.

公开(公告)号：JPH04310213A

公开(公告)日：1992-11-02

申请号：JP3407192

申请日：1992-01-24

Applicant: SNAM PROGETTI ,  ENIRICERCHE SPA

Inventor： KARURO RESUKAARI ,  ANTONIO PACHIFUIIKO ,  UUGO MERISU

IPC: B01D19/00 ,  B01D53/14 ,  B01D53/40 ,  B01D53/52 ,  B01D53/62 ,  B01D53/77

Abstract: PURPOSE: To remove acid gas at low cost and efficiently by absorbing an acid gas such as H2 S and/or CO2 with an aq. solvent containing a specified compd. then stripping the obtained soln.. CONSTITUTION: The gas to be treated containing H2 S and CO2 is supplied to an absorption vessel 2 through a line 1, and also an absorbent soln. is supplied to the absorption vessel 2 through a line 3 at a site under several steps from a top part. An aq. soln. containing 30-70 wt.% dimethylethanolamine and

公开(公告)号：JPH04218758A

公开(公告)日：1992-08-10

申请号：JP5774791

申请日：1991-03-01

Applicant: ENIRICERCHE SPA ,  SNAM PROGETTI

Inventor： RUIJI MODEIKA ,  RUCHIO DE ANZERISU

IPC: G01N27/04 ,  G01N27/12 ,  G01N33/00

Abstract: PURPOSE: To improve selectivity, stability and reproducibility of a gas detection element. CONSTITUTION: In using a gas detection element for detecting a gas of hydrocarbon in a gas mixture, two detecting elements are heated at different temperatures, and one is used as a reference element. The element is formed by heating.processing a film deposited in a silk screen method at high temperatures and connected to an electronic evaluation circuit.