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    Process for the preparation of azo compounds from amino compounds in the presence of a phase transfer catalyst
    5.
    发明授权
    Process for the preparation of azo compounds from amino compounds in the presence of a phase transfer catalyst 失效
    在相转移催化剂存在下由氨基化合物制备偶氮化合物的方法

    公开(公告)号：US4272435A

    公开(公告)日：1981-06-09

    申请号：US945504

    申请日：1978-09-25

    Applicant: Teruo Matsuda ,  Shigeo Wake ,  Tetsuya Shiozaki

    Inventor： Teruo Matsuda ,  Shigeo Wake ,  Tetsuya Shiozaki

    IPC: C07C255/65 ,  C08F4/04 ,  C07C107/00 ,  C07C107/02 ,  C07C107/04

    CPC classification number: C07C255/65

    Abstract: Azo compounds of the formula, ##STR1## wherein each of R.sub.1 and R.sub.2 is selected from the group consisting of (1) C.sub.1 -C.sub.8 aliphatic hydrocarbons unsubstituted or substituted with carboxyl, hydroxyl or alkoxy of the formula --OR.sub.4 in which R.sub.4 is a C.sub.1 -C.sub.4 aliphatic hydrocarbon, (2) C.sub.3 -C.sub.8 alicyclic hydrocarbons, (3) C.sub.6 -C.sub.10 aromatic hydrocarbons and (4) C.sub.4 -C.sub.12 alicyclic hydrocarbons formed by combining R.sub.1 and R.sub.2 together with the adjacent carbon atom, and R.sub.3 is selected from the group consisting of nitrile, esters of the formula --COOR.sub.4 in which R.sub.4 is a C.sub.1 -C.sub.4 aliphatic hydrocarbon, a carboxylate of the formula --COOM in which M is an alkali metal or alkaline earth metal, and a carboxylamido, which are useful as foaming agents or radical polymerization initiator, are prepared in a high yield by reacting a corresponding amino compound with a metal hypohalite or with an alkyl hypohalite in the presence of an alkali, using a phase transfer catalyst in a heterogeneous medium comprising water and organic solvent, the phase transfer catalyst being one member selected from the group consisting of organic quaternary ammonium salts, organic quaternary phosphonium salts and macrocyclic polyethers.

    Abstract translation: 下式的偶氮化合物，其中R 1和R 2各自选自（1）未被取代或被羧基取代的C 1 -C 8脂族烃，或由式-OR 4取代的羟基或烷氧基，其中R 4是C 1 -C 4脂族烃，（2）C 3 -C 8脂环烃，（3）C 6 -C 10芳烃和（4）通过将R 1和R 2与相邻碳原子结合而形成的C 4 -C 12脂环族烃，并且R 3选自 由腈组成的组，其中R 4是C 1 -C 4脂族烃的式-COOR 4的酯，其中M是碱金属或碱土金属的式-COOM的羧酸酯和可用作起泡剂的羧酰胺基 通过使相应的氨基化合物与金属次卤酸盐或与烷基次卤酸盐在碱存在下反应，通过在包含水和有机物的非均相介质中使用相转移催化剂，以高产率制备试剂或自由基聚合引发剂 lvent，相转移催化剂是选自有机季铵盐，有机季鏻盐和大环聚醚中的一种。

    Process for preparing 2,2'-azobis(2,4-dimethyl-4-methoxypentanenitrile)
    7.
    发明授权
    Process for preparing 2,2'-azobis(2,4-dimethyl-4-methoxypentanenitrile) 失效
    制备2,2'-偶氮二（2,4-二甲基-4-甲氧基戊腈）

    公开(公告)号：US4218371A

    公开(公告)日：1980-08-19

    申请号：US944571

    申请日：1978-09-25

    Applicant: Earl P. Moore, Jr.

    Inventor： Earl P. Moore, Jr.

    IPC: C08F4/00 ,  B01J31/00 ,  C07B61/00 ,  C07C67/00 ,  C07C245/04 ,  C07C253/00 ,  C07C255/27 ,  C07C255/65 ,  C08F2/04 ,  C08F4/04 ,  C07C107/02 ,  C08F2/24 ,  C08F2/28

    CPC classification number: C07C255/00 ,  C07C245/04 ,  C07C255/65 ,  C07C2101/02 ,  C07C2101/14

    Abstract: A process for the preparation of 2,2'-azobis(2,4-dimethyl-4-methoxypentanenitrile) in improved yields with improved filtering characteristics, said process comprising reacting 2-amino-2,4-dimethyl-4-methoxypentanenitrile with a metal hypochlorite in the presence of water, a quaternary ammonium surface active compound and ionic bromide wherein the equivalent ratio of ionic bromide to surface active compound is 0.4:1-4:1 at a temperature of about -10.degree. C. to about 30.degree. C., and recovering 2,2'-azobis(2,4-dimethyl-4-methoxypentanenitrile) from the reaction mixture.

    Abstract translation: 一种以提高的过滤特性制备2,2'-偶氮双（2,4-二甲基-4-甲氧基戊腈）的方法，所述方法包括使2-氨基-2,4-二甲基-4-甲氧基戊腈与 在水存在下的金属次氯酸盐，季铵表面活性化合物和离子溴化物，其中离子性溴化物与表面活性化合物的当量比在约-10℃至约30℃的温度下为0.4:1-4:1 并从反应混合物中回收2,2'-偶氮双（2,4-二甲基-4-甲氧基戊腈）。

    Preparation of block polymers using polyazo sequential free radical initiators
    9.
    发明授权
    Preparation of block polymers using polyazo sequential free radical initiators 失效
    使用多偶氮顺序自由基引发剂制备嵌段聚合物

    公开(公告)号：US4075286A

    公开(公告)日：1978-02-21

    申请号：US474739

    申请日：1974-05-30

    Applicant: Ronald Edward MacLeay ,  Chester Stephen Sheppard

    Inventor： Ronald Edward MacLeay ,  Chester Stephen Sheppard

    IPC: C08F4/04 ,  C07C107/02 ,  C07C107/04 ,  C08L51/00 ,  C08L53/00

    CPC classification number: C08F4/04

    Abstract: A process for preparing a block polymer by first forming a polymer having azo functions by reacting vinyl polymer and a polyazo compound under conditions so that one of the azo functions rupture leaving the other azo function in tact; then, vinyl monomer is reacted with the polymer to produce the block copolymer. The polyazo compounds must contain at least one alkyl or aryl thio or oxa group alpha to at least one of the azo groups in the connecting chain between the azo groups to be useful as the sequential generator of free radicals.

    Abstract translation: 一种制备嵌段聚合物的方法，首先通过使乙烯基聚合物和多偶氮化合物在偶氮功能中的一种破裂而使其它偶氮功能破裂的条件下形成具有偶氮功能的聚合物; 然后使乙烯基单体与聚合物反应以产生嵌段共聚物。 多偶氮化合物必须在偶氮基团之间的连接链中的至少一个偶氮基团中必须含有至少一个烷基或芳基硫代或氧杂基团α，以用作自由基的顺序发生剂。

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