Process for the preparation of symmetrical dicumyl peroxides
    2.
    发明授权
    Process for the preparation of symmetrical dicumyl peroxides 失效
    制备对称二枯基过氧化物的方法

    公开(公告)号:US4243821A

    公开(公告)日:1981-01-06

    申请号:US75356

    申请日:1979-09-13

    CPC classification number: C07C17/08 C07C407/00 C07C407/003 C07C409/16 C08K5/14

    Abstract: An olefin such as .alpha.-methylstyrene or a substituted .alpha.-methylstyrene, wherein the substituent is on the phenyl ring, a t-cumyl halide corresponding to the hydrohalogenated olefin or a substituted t-cumyl chloride and hydrogen peroxide are reacted under relatively non-aqueous conditions, in the absence of a free acid and in the presence of a phenol, to obtain a symmetrical dicumyl (or substituted dicumyl) peroxide which is useful as cross-linking agents for polyethylene and elastomers.

    Abstract translation: 诸如α-甲基苯乙烯或取代的α-甲基苯乙烯的烯烃,其中取代基在苯环上,对应于氢卤化烯烃的叔枯基卤化物或取代的叔枯基氯和过氧化氢在相对非水溶液 条件下,在不存在游离酸的情况下和在苯酚存在下,得到对称的二枯基(或取代的二枯基)过氧化物,其可用作聚乙烯和弹性体的交联剂。

    Preparation of aldehyde and ketone organic peroxide compositions
    5.
    发明授权
    Preparation of aldehyde and ketone organic peroxide compositions 失效
    醛和酮有机过氧化物组合物的制备

    公开(公告)号:US3945940A

    公开(公告)日:1976-03-23

    申请号:US43329

    申请日:1970-06-04

    CPC classification number: C07C409/22 C07C407/00 C08F283/01

    Abstract: Improved organic aldehyde and ketone peroxide compositions useful for initiating the polymerization of polyesters formed from the concurrent reaction of a beta dione such as 2,4-pentanedione and a different (non-beta dione) ketone or aldehyde, for example methyl ethyl ketone, with aqueous hydrogen peroxide.

    Abstract translation: 改进的有机醛和酮过氧化物组合物可用于引发由β-二酮如2,4-戊二酮和不同的(非β-二酮)酮或醛(例如甲基乙基酮)的同时反应形成的聚酯聚合, 过氧化氢水溶液。

    Hydrocarbon polyl gem-bis(t-alkylperoxy)alkanoates derived from
.beta.-keto-acids
    7.
    发明授权
    Hydrocarbon polyl gem-bis(t-alkylperoxy)alkanoates derived from .beta.-keto-acids 失效
    衍生自β-酮酸的烃聚合物双(叔烷基过氧)链烷酸酯

    公开(公告)号:US4288379A

    公开(公告)日:1981-09-08

    申请号:US802216

    申请日:1977-05-31

    Inventor: Duane B. Priddy

    CPC classification number: C07C409/22 C08F4/36

    Abstract: The title compounds are useful vinyl polymerization initiators of high thermal stability and correspond to the formula: ##STR1## wherein R is an x-valent hydrocarbon whose chain length can be interrupted by one or more ether linkages, R' is an aliphatic moiety of 1 to about 10 carbon atoms, R" is a tertiary hydrocarbon, and x is an integer of at least 2.

    Abstract translation: 标题化合物是具有高热稳定性的有用的乙烯基聚合引发剂,对应于下式:其中R是一个x价烃,其链长可以被一个或多个醚键间隔,R'是1的脂族部分 至约10个碳原子,R“为叔烃,x为至少2的整数。

    Preparation of di-tertiary peroxides
    8.
    发明授权
    Preparation of di-tertiary peroxides 失效
    二叔过氧化物的制备

    公开(公告)号:US4198528A

    公开(公告)日:1980-04-15

    申请号:US872179

    申请日:1978-01-25

    Inventor: Donald R. Kelsey

    CPC classification number: C07C409/16 C07C407/00

    Abstract: The reaction rates for the interaction of tertiary hydroperoxides with tertiary alcohols to afford di-tertiary peroxides are increased by carrying out the reaction in the presence of a carboxylic acid anhydride.

    Abstract translation: 通过在羧酸酐存在下进行反应,使叔氢过氧化物与叔醇相互作用产生二叔过氧化物的反应速率增加。

    Process for the manufacture of di-t-butylperoxy ketals
    9.
    发明授权
    Process for the manufacture of di-t-butylperoxy ketals 失效
    二叔丁氧基酮制备方法

    公开(公告)号:US4052464A

    公开(公告)日:1977-10-04

    申请号:US597792

    申请日:1975-07-21

    Inventor: Duane B. Priddy

    CPC classification number: C07C407/00 C07C407/003 C07C2101/14

    Abstract: Di-t-butylperoxy ketals are prepared from t-butyl hydroperoxide and the appropriate ketone in the presence of from 1 to 10 times the weight of ketone of ethylbenzene employing an acidic catalyst. Water is removed by azeotropic distillation with ethylbenzene and excess t-butyl hydroperoxide is subsequently removed by azeotropic distillation of additional ethylbenzene to provide a solution of the di-t-butylperoxide ketal in ethylbenzene which is particularly desirable as an initiator for styrene polymerization.

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