Stabilized aqueous alkyldiketene emulsions
    76.
    发明授权
    Stabilized aqueous alkyldiketene emulsions 失效
    稳定的水性氨基酸乳化剂

    公开(公告)号:US5154763A

    公开(公告)日:1992-10-13

    申请号:US639093

    申请日:1991-01-09

    摘要: Stabilized aqueous C.sub.14 -C.sub.22 -alkyldiketene emulsions containing, as essential components:(a) from 10 to 60% w/w of at least one C.sub.14 -C.sub.22 -alkyldiketene,(b) from 1 to 10% w/w of at least one protective colloid and(c) from 0.1 to 20% w/w of at least one ester of formula I ##STR1## in which R.sup.1 and R.sup.2 each denote C.sub.14 -C.sub.22 -alkyl, R.sup.1 differing in this case from R.sup.2 by at least 4 carbon atoms in the alkyl chain, and/or the same or different C.sub.14 -C.sub.22 -alkenyl groups, or at least one ester of the formula R.sup.3 --O--CO--O--R.sup.4 (II), in which R.sup.3 and R.sup.4 are alkyl or alkenyl radicals of from 2 to 22 carbon atoms or at least one urethane of formula III ##STR2## in which R.sup.5, R.sup.6 and R.sup.7 are the same or different alkyl or alkenyl radicals of from 2 to 22 carbon atoms and one of the substituents R.sup.5, R.sup.6 and R.sup.7 contains at least 12 carbon atoms,and showing a ratio of emulsified components (a):(c) from 200:1 to 1:1 and the use of compounds of formulae I to III as stabilizers for the preparation of alkyldiketene emulsions containing at least 10% w/w and preferably from 16 to 40% w/w of emulsified alkyldiketene.

    摘要翻译: 含有作为必要组分的稳定的C14-C22-烷基二乙烯基水乳液:(a)10至60%w / w的至少一种C14-C22-烷基二乙烯基,(b)1至10%w / w的至少一种 保护胶体和(c)0.1至20%w / w的至少一种式I(I)的酯,其中R 1和R 2各自表示C 14 -C 22 - 烷基,R 1在这种情况下不同于R 2, 烷基链中至少4个碳原子,和/或相同或不同的C 14 -C 22 - 烯基或至少一个式R 3 -O-CO-O-R 4(II)的酯,其中R 3和R 4是 具有2至22个碳原子的烷基或烯基或至少一个式III的氨基甲酸酯其中R 5,R 6和R 7是相同或不同的具有2至22个碳原子的烷基或烯基,一个 的取代基R 5,R 6和R 7含有至少12个碳原子,并且显示出乳化组分(a):(c)的比例为200:1至1:1,并且使用式I至III的化合物作为稳定剂 烷基染料的制备 含有至少10%w / w,优选16至40%w / w的乳化的烷基染料的乳液。

    Production of lactones from diols
    77.
    发明授权
    Production of lactones from diols 失效
    从二醇生产乳酸菌

    公开(公告)号:US5106995A

    公开(公告)日:1992-04-21

    申请号:US347647

    申请日:1989-05-05

    摘要: A method for converting 1,4 and 1,5 aliphatic saturated diols to lactones is disclosed wherein the diol is reacted with a chemical oxidizing agent and a ruthenium containing catalyst at temperatures substantially less than 200.degree. C. The reaction proceeds quickly and produces high yields of the desired product.

    摘要翻译: 公开了将1,4和1,5-脂肪族饱和二醇转化为内酯的方法,其中二醇在温度基本上低于200℃下与化学氧化剂和含钌催化剂反应。反应快速进行并产生高产率 的所需产品。

    Vapor-phase hydrogenation of maleic anhydride to tetrahydrofuran and
gamma-butyrolactone
    78.
    发明授权
    Vapor-phase hydrogenation of maleic anhydride to tetrahydrofuran and gamma-butyrolactone 失效
    马来酸酐与四氢呋喃和γ-丁内酯的气相氢化

    公开(公告)号:US5072009A

    公开(公告)日:1991-12-10

    申请号:US575093

    申请日:1990-08-30

    IPC分类号: C07D307/08 C07D315/00

    CPC分类号: C07D315/00 C07D307/08

    摘要: Tetrahydrofuran and optionally gamma-butyrolactone are prepared from at least one of maleic anhydride or succinic anhydride in the absence of alcohols by catalytically hydrogenating vaporous maleic anhydride or vaporous succinic anhydride in the presence of hydrogen and a catalyst comprising the mixed oxides of copper, zinc and aluminum.

    摘要翻译: 四氢呋喃和任选的γ-丁内酯由不存在醇的马来酸酐或琥珀酸酐中的至少一种通过在氢存在下催化氢化气态马来酸酐或蒸气性琥珀酸酐而制备,所述催化剂包含铜,锌和 铝。