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    Process for obtaining modified diene polymers
    22.
    发明授权
    Process for obtaining modified diene polymers 失效
    获得改性二烯聚合物的方法

    公开(公告)号：US3893983A

    公开(公告)日：1975-07-08

    申请号：US43508274

    申请日：1974-01-21

    Applicant: SNAM PROGETTI

    Inventor： BRANCACCIO ALDO ,  GHETTI GIUSEPPE ,  BRUZZONE MARIO

    IPC: C08F8/00 ,  C08C19/00 ,  C08C19/28 ,  C08F8/46 ,  C08F27/00

    CPC classification number: C08C19/28

    Abstract: Polyisoprene of improved green strength is prepared by reacting maleic acid with polyisoprene of a high cis 1,4 content and containing at least 3% imbibition water by feeding moist polyisoprene and maleic acid to an extruder-desiccator at a temperature in the range of 140* to 200*C and at a rate such that 0.01 to 5 parts by weight of maleic acid are fed per 100 parts of polyisoprene, whereby the reaction of the maleic acid with the polyisoprene and the desiccation thereof occur at the same time.

    Abstract translation: 通过将马来酸与高顺式1,4-含量的聚异戊二烯反应并通过将湿聚异戊二烯和马来酸加入到挤出机 - 干燥器中，在140℃的温度范围内将含有至少3％吸水的马来酸反应来制备改善生坯强度的聚异戊二烯 以每100份聚异戊二烯加入0.01至5重量份马来酸的速率，由此马来酸与聚异戊二烯的反应和干燥同时发生。

    Procedure for the production of polymers and copolymers of isobutylene and compositions obtained
    24.
    发明授权
    Procedure for the production of polymers and copolymers of isobutylene and compositions obtained 失效
    生产获得的异丁烯和组合物的聚合物和共聚物的方法

    公开(公告)号：US3850896A

    公开(公告)日：1974-11-26

    申请号：US30690272

    申请日：1972-11-15

    Applicant: SNAM PROGETTI

    Inventor： PRIOLA A ,  CESCA S ,  GIUSTI P ,  FERRARIS G ,  BACCAREDDA M

    IPC: C08F4/00 ,  C08F4/42 ,  C08F4/60 ,  C08F4/78 ,  C08F10/14 ,  C08F210/12 ,  C08D1/26 ,  C08D3/04 ,  C08D3/10

    CPC classification number: C08F10/14 ,  C08F210/12 ,  C08F4/52

    Abstract: 1. PROCESS FOR THE PRODUCTION OF BUTYL RUBBER THROUGH THE COPOLYMERIZATION OF SIOLBUTYLENE AND ISOPRENE WHEREIN THE IMPROVEMENT COMPRISES CONDUCTING THE COPOLYMERIZATION REACTION IN THE PRESENCE OF A CATALYST SYSTEM CONSISTING ESSENTIALLY OF: (A) A METALORGANIC COMPOSITION OF ALUMINUM REPRESENTED BY THE FORMULA AIR3 OR AIR2X WHEREIN X IS AN ATOM OF HALOGEN, AND R IS A HYDROCARBON RADICAL HAVING FROM 1 TO 10 CARBON ATOMS, OR HYDROGEN; (B) A HALOID OF AN INORGANIC ACID REPRESENTED BY THE GENERAL FORMULA ZNMEXMYP IN WHICH ME IS AN ELEMENT BELONGING TO THE 5*, 6* OR 7* GROUP OF THE PERIODIC SYSTEM; N AND M ARE WHOLE NUMBERS; P IS A WHOLE NUMBER OR ZERO AND THE SUM 2N+M+P IS EQUAL TO THE VALENCY OF SAID ELEMENT; Z IS OXYGEN OR SULPHUR; X IS A HALOGEN ATOM; Y IS AN ORGANIC RESIDUE SELECTED FROM THE ALKYLIC, ACRYLIC, CYCLOHEXYLIC, ETHERIC, AMMIDIC, ACETYLACETONIC AND OXIMIC FUNCTIONAL GROUPS; AND WHEREIN THE MOLAR RATIO OF COMPOUND (B) TO COMPOUND (A) IS BETWEEN 0.5 AND 10-4.

    Automatic device for controlling catalytic mufflers
    25.
    发明授权
    Automatic device for controlling catalytic mufflers 失效
    用于控制催化消音器的自动装置

    公开(公告)号：US3837165A

    公开(公告)日：1974-09-24

    申请号：US28700972

    申请日：1972-09-07

    Applicant: SNAM PROGETTI

    Inventor： ARRIGONI V ,  ZANONI G ,  GAETANI B ,  MARCHESI G

    IPC: F16K31/06 ,  F01N3/08 ,  F01N3/20 ,  F02D41/14 ,  F02B75/10

    CPC classification number: F02D41/1446 ,  F01N3/2053 ,  F01N2390/02 ,  F01N2410/02 ,  F01N2410/10

    Abstract: A device for automatically controlling a by-pass electro-valve of a catalytic muffler comprising three inlet stages, the first inlet stage is responsive to the speed or number of engine revolutions, the second inlet stage is responsive to the throttle position and includes a retarding circuit and store, and the third inlet stage is responsive to the temperature of the catalyst and includes means for comparing the temperature of the catalyst with a maximum allowable temperature (TMAX.) and a predetermined running temperature (TS). The three inlet stages are electrically coupled to an outlet stage which includes a timer for producing a pulse of predetermined duration.

    Abstract translation: 一种用于自动控制包括三个入口级的催化消声器的旁通电动阀的装置，所述第一入口级响应于发动机转速的速度或数量，所述第二入口级响应于所述节气门位置，并且包括减速 并且第三入口级响应于催化剂的温度，并且包括用于将催化剂的温度与最大允许温度（TMAX。）和预定运行温度（TS）进行比较的装置。 三个入口级电耦合到出口级，其包括用于产生预定持续时间的脉冲的计时器。

    Process for the electrochemical manufacture of silver containing catalysts
    26.
    发明授权
    Process for the electrochemical manufacture of silver containing catalysts 失效
    含有催化剂的银的电化学制造工艺

    公开(公告)号：US3836436A

    公开(公告)日：1974-09-17

    申请号：US27593772

    申请日：1972-07-28

    Applicant: SNAM PROGETTI

    Inventor： RIVOLA L ,  MORMINO V ,  NOTARI B

    IPC: B01J23/50 ,  B01J37/34 ,  C07D301/10 ,  C25C5/02 ,  C22D5/00 ,  B01K3/00

    CPC classification number: C07D301/10 ,  B01J23/50 ,  B01J37/348 ,  C25C5/02 ,  Y02P20/52

    Abstract: A process is disclosed whereby a silver containing catalyst is produced, in a particle size ranging from 300 to 1,500 A, through the pulsed electrolysis of a solution of a silver salt (e.g., silver nitrate) in the presence of a complexing agent (e.g., ammonia) wherein current is fed to the solution for spaced periods of a few seconds duration. Advantageously, after about 10-15 cycles of feeding and interrupting the current to the solution, a current inversion lasting from a few seconds is effected. The silver is obtained in the form of a powder which, after washing, can be used directly or supported on a ceramic material as catalyst for the production of ethylene oxide.

    Abstract translation: 公开了一种方法，其中通过在络合剂存在下通过脉冲电解银盐（例如硝酸银）溶液，制备粒度范围为300至1,500的含银催化剂（例如， 氨），其中电流被供给溶液，持续时间为几秒。 有利的是，在供给和中断电流到溶液的约10-15个循环之后，进行持续几秒的电流反转。 银以粉末的形式获得，其在洗涤后可直接使用或负载在陶瓷材料上作为生产环氧乙烷的催化剂。

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