Process for converting glycol dialkyl ether
    3.
    发明授权
    Process for converting glycol dialkyl ether 失效
    二醇二烷基醚转化方法

    公开(公告)号:US4368337A

    公开(公告)日:1983-01-11

    申请号:US248913

    申请日:1981-03-30

    摘要: A process is described for converting glycol dialkyl ether without substantial formation of olefin oligomers by reaction with water, comprising reacting a feed glycol di-tertiary alkyl ether represented by structural formula (A) with water using a strongly acidic cation-exchange resin as a catalyst and a reaction temperature of from 40.degree. C. to 150.degree. C. under a pressure of from 1 to 70 kg/cm.sup.2 (absolute pressure) in a molar ratio of water/feed glycol di-tertiary alkyl ether represented by the structural formula (A) of from 0.05/1 to 60/1, to convert the ether of formula (A) into at least one of (1) glycol mono-tertiary alkyl ether represented by the structural formula (B) and tertiary alcohol represented by the structural formula (C), or (2) glycol mono-tertiary alkyl ether represented by the structural formula (B) tertiary alcohol represented by the structural formula (C) and tertiary olefin represented by the structural formula (D); wherein (A), (B), (C), and (D) are as follows: ##STR1## wherein R.sub.1 represents a methyl group, an ethyl group, or a propyl group, n represents an integer of from 1 to 10, and R.sub.2 represents an alkylene group having from 2 to 14 carbon atoms, and the total number of carbon atoms in the group --(R.sub.2 --O).sub.n -- is from 2 to 30.

    摘要翻译: 描述了通过与水反应而不使烯烃低聚物形成烯烃转化的方法,包括使用强酸性阳离子交换树脂作为催化剂使由结构式(A)表示的进料二醇二叔烷基醚与水反应 反应温度为40〜150℃,以1〜70kg / cm 2(绝对压力)的压力下,以结构式表示的水/进料二醇二叔烷基醚的摩尔比( A)为0.05 / 1至60/1,将式(A)的醚转化为由结构式(B)表示的(1)二醇单叔烷基醚和由结构式(B)表示的叔醇中的至少一种, 式(C)或(2)由结构式(B)表示的结构式(B)叔醇的乙二醇单叔烷基醚和由结构式(D)表示的叔烯烃; 其中(A),(B),(C)和(D)如下:(D)其中R 1表示甲基 基团,乙基或丙基,n表示1〜10的整数,R 2表示碳原子数为2〜14的亚烷基,基团中的碳原子数为(R 2 -O )n-为2〜30。

    Process for production of pivalolactone
    8.
    发明授权
    Process for production of pivalolactone 失效
    生产新戊内酯的方法

    公开(公告)号:US3907828A

    公开(公告)日:1975-09-23

    申请号:US33970069

    申请日:1969-07-07

    CPC分类号: C07D315/00 B01J27/1802

    摘要: A novel process for the production of pivalolactone is characterized by dehydrochlorinating monochloropivalic acid in vapor phase in the presence of a catalyst comprising at least one of the metal salts selected from the group consisting of phosphates and pyrophosphates of alkali metals, alkali earth metals, zinc, cadmium, aluminum, thalium, lead, manganese, cobalt and nickel, and chlorides of alkali earth metals, silver copper, thallium, lead and cobalt. Said catalyst may be further combined with an activator selected from the group consisting of the oxides of zirconium, arsenic and rare earth elements.

    摘要翻译: 用于生产新戊内酯的新方法的特征在于在催化剂存在下,气相中脱氯化氢一氯新戊酸,所述催化剂包含至少一种选自磷酸盐和碱金属的焦磷酸盐,碱土金属,锌, 镉,铝,铊,铅,锰,钴和镍,以及碱土金属,银铜,铊,铅和钴的氯化物。 所述催化剂可以进一步与选自锆,砷和稀土元素的氧化物的活化剂组合。