Process for preparation of 2-oxazolidinones
    1.
    发明授权
    Process for preparation of 2-oxazolidinones 失效
    2-恶唑烷酮的制备方法

    公开(公告)号:US4500717A

    公开(公告)日:1985-02-19

    申请号:US479400

    申请日:1983-03-28

    IPC分类号: C07D263/22

    CPC分类号: C07D263/22

    摘要: The invention is a process for the preparation of 2-oxazolidinones which comprises contacting a 2-hydroxyalkyl carbamate with an alkylene oxide or alkylene carbonate in the presence of a catalytic amount of a quaternary ammonium halide, quaternary phosphonium halide, a group I metal carbonate, hydroxide, oxide or halide, or a group II metal carbonate, hydroxide, oxide or halide under conditions such that a 2-oxazolidinone is prepared.

    摘要翻译: 本发明是制备2-恶唑烷酮的方法,其包括在催化量的季铵卤化物,季卤化鏻,第I族金属碳酸盐存在下使氨基甲酸2-羟烷基酯与烯化氧或碳酸亚烃酯接触, 氢氧化物,氧化物或卤化物,或第II族金属碳酸盐,氢氧化物,氧化物或卤化物,以制备2-恶唑烷酮。

    Plasticizers for polyvinylchloride comprising a reaction product of
alkanedicarboxic acid and alkanolether
    2.
    发明授权
    Plasticizers for polyvinylchloride comprising a reaction product of alkanedicarboxic acid and alkanolether 失效
    包括聚碳酸酯的增塑剂,其包含烷基二羧酸和链烷醇醚的反应产物

    公开(公告)号:US4330452A

    公开(公告)日:1982-05-18

    申请号:US111745

    申请日:1980-01-14

    申请人: Frank T. Cook

    发明人: Frank T. Cook

    CPC分类号: C08K5/11

    摘要: The use of a group of diester compounds that are particularly effective as plasticizers in polyvinylchloride-resin formulations and articles made therefrom. These compounds are the diesters of alkanedicarboxylic acids and alkanolethers. They are prepared by the direct esterification reaction of dicarboxylic acids with alkanolethers or by the trans esterification reaction of diesters with the corresponding alkanolethers.

    摘要翻译: 使用一组在聚氯乙烯树脂配方和由其制成的制品中作为增塑剂特别有效的二酯化合物。 这些化合物是链烷二羧酸和链烷醇醚的二酯。 它们通过二羧酸与链烷醇酯的直接酯化反应或二酯与相应的链烷醇的酯交换反应制备。

    Process for the production of propylene glycol esters from chloropropyl
ethers
    3.
    发明授权
    Process for the production of propylene glycol esters from chloropropyl ethers 失效
    用于由氯丙基醚生产丙二醇酯的方法

    公开(公告)号:US4298758A

    公开(公告)日:1981-11-03

    申请号:US120438

    申请日:1980-02-11

    CPC分类号: C07C67/11 C07C67/24

    摘要: Propylene glycol and dipropylene glycol diesters are prepared by reacting dichloropropyl ethers with a carboxylic acid salt, e.g., sodium acetate, and the corresponding carboxlyic acid, e.g., acetic acid. The by-product sodium chloride is insoluble in the acetic acid and easily separated from the reaction mixture. The diesters can be hydrolyzed to their respective glycols.

    摘要翻译: 丙二醇和二丙二醇二酯通过使二氯丙基醚与羧酸盐例如乙酸钠和相应的羧酸如乙酸反应来制备。 副产物氯化钠不溶于乙酸,容易与反应混合物分离。 二酯可以水解成它们各自的二醇。

    Production of monoalkyleneglycols, monoalkanolamines and alkylenediamine
    4.
    发明授权
    Production of monoalkyleneglycols, monoalkanolamines and alkylenediamine 失效
    单亚烷基二醇,单链烷醇胺和亚烷基二胺的生产

    公开(公告)号:US4272455A

    公开(公告)日:1981-06-09

    申请号:US107287

    申请日:1979-12-26

    CPC分类号: C07C29/00 C07C29/095

    摘要: A method for the formation of monoalkyleneglycols, monoalkanolamines and alkylenediamines, comprising the steps of: (a) reacting ammonia or ammonium carbonate with an alkylenecarbonate to form a carbamate, (b) heating the carbamate to form a monoalkyleneglycol, an alkyleneurea and a 2-oxazolidinone, (c) further reacting the alkyleneurea and the 2-oxazolidinone with ammonium hydroxide to form ammonia or ammonium carbonate, a monoalkanolamine, and an alkylenediamine, (d) separating the ammonia or ammonium carbonate, the monoalkyleneglycol, the alkylenediamine, and the monoalkanolamine, and (e) recycling the ammonia or ammonium carbonate to reaction step (a).

    摘要翻译: 一种形成单亚烷基二醇,单烷醇胺和亚烷基二胺的方法,包括以下步骤:(a)使氨或碳酸铵与亚烷基碳酸酯反应以形成氨基甲酸酯,(b)加热氨基甲酸酯以形成单亚烷基二醇,亚烷基脲和2- 恶唑烷酮,(c)使亚烷基脲和2-恶唑烷酮与氢氧化铵进一步反应以形成氨或碳酸铵,单烷醇胺和亚烷基二胺,(d)分离氨或碳酸铵,单亚烷基二醇,亚烷基二胺和单链烷醇胺 ,和(e)将氨或碳酸铵再循环到反应步骤(a)中。