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    Olefin tetrapolymer and process for the preparation thereof
    1.
    发明授权
    Olefin tetrapolymer and process for the preparation thereof 失效
    烯烃四元共聚物及其制备方法

    公开(公告)号：US3903062A

    公开(公告)日：1975-09-02

    申请号：US36918473

    申请日：1973-08-08

    Applicant: SNAM PROGETTI

    Inventor： ARRIGHETTI SERGIO ,  CESCA SEBASTIANO ,  GHETTI GIUSEPPE ,  BRUZZONE MARIO ,  CINELLI ERMANNO

    IPC: C08F210/18 ,  C08F1/34 ,  C08F1/08 ,  C08F3/16

    CPC classification number: C08F210/18 ,  C08F210/06 ,  C08F2500/17 ,  C08F2500/25

    Abstract: Vulcanizable olefin tetrapolymers are described which are comprised of ethylene, an alpha-olefin having at least 3 carbon atoms, at least one conventional terpolymer such as exodicyclopentadiene, and a minor amount of a polycyclic polyene containing an endomethylene system ortho-condensed with another hydrocarbon ring, and wherein the two carbon atoms common to two rings belong to a conjugated diene system whose double bonds are in the ring other than the endomethylene ring.

    Abstract translation: 描述了由乙烯，具有至少3个碳原子的α-烯烃，至少一种常规三元共聚物如外双环戊二烯组成的可硫化烯烃四元共聚物，以及少量含有与另一个邻位稠合的内部亚甲基系统的多环多烯 烃环，其中两个环共有的两个碳原子属于双键在除了亚甲基环之外的环中的共轭二烯体系。

    Process for obtaining modified diene polymers
    2.
    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。

    Process for produced stabilized olefin
    5.
    发明授权
    Process for produced stabilized olefin 失效
    生产的稳定烯烃的方法

    公开(公告)号：US3892712A

    公开(公告)日：1975-07-01

    申请号：US27593672

    申请日：1972-07-28

    Applicant: SNAM PROGETTI

    Inventor： ARRIGHETTI SERGIO ,  CESCA SEBASTIANO ,  GHETTI GIUSEPPE ,  VAJNA EUGENIO

    IPC: C08F8/00 ,  C08F8/32 ,  C08F8/34 ,  C08F15/40 ,  C08F27/18

    CPC classification number: C08F8/34 ,  C08F210/18 ,  C08F8/00

    Abstract: A method is described whereby olefin terpolymers, consisting of ethylene, an alpha olefin and a polyene having in the molecule, in addition to the double bond participating in the formation of the macromolecule, at least one conjugated double bond system, are stabilied against oxidative aging without destroying their characteristic high vulcanization rate by reacting them with a dienophilic agent represented by one of the following formulae:

    WHEREIN R and R6 may be an alkyl, alkenyl, cycloalkyl, aryl or aralkyl radical having up to 8 carbon atoms, R1, R2, R3, R4 and R5 may be hydrogen or alkyl, aryl, cycloalkyl or aralkyl radicals having up to 8 carbon atoms, the R1-R2 and R-R pairs may be divalent radicals forming condensed rings.

    Abstract translation: 描述了一种方法，其中由乙烯，α-烯烃和分子内具有多键的烯烃三元共聚物除了参与高分子形成的双键之外，还具有至少一个共轭双键体系，以抵抗氧化老化 通过使它们与由下式表示的二亲性剂反应而破坏它们的特征性高硫化速率：WHEREIN R和R 6可以是具有至多8个碳原子的烷基，烯基，环烷基，芳基或芳烷基，R 1，R 2， R3，R4和R5可以是氢或具有至多8个碳原子的烷基，芳基，环烷基或芳烷基，R1-R2和RR对可以是形成稠环的二价基团。

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