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    2,2-Dimethyl 1,3-propandiol hydroxypivalates - by disproportionating hydroxypivalaldehyde
    4.
    发明专利
    2,2-Dimethyl 1,3-propandiol hydroxypivalates - by disproportionating hydroxypivalaldehyde 未知

    公开(公告)号：DE2233897A1

    公开(公告)日：1974-03-21

    申请号：DE2233897

    申请日：1972-07-10

    Applicant: BASF AG

    Inventor： MERGER FRANZ DR ,  DUEMBGEN GERD DR

    IPC: C07C69/66 ,  C07C69/675

    Abstract: 1,3-propanediol hydroxypivalic acid monoester (I) prepn. of disporportionating hydroxypivalaldehyde (II) at increased temp in presence of the hydroxide of Ca, Ba or Sr, as in parent patent, is improved by reaction in presence of Ca(OH)2, Ba(OH)2, or Sr(OH)2 and of water, or in presence of >=1 oxide and/or hydroxide of Li, Mg, Tl, Pb, Bi, La, Ce, Zn, Cd, Mn, Fe, Co, Ni and/or oxides to Ca, Sr and Ba, opt. in presence of water, in place of or in addn. to the hydroxides of Ca, Ba, or Sr. Yields and space-time yields are higher and a pure prod. is obtd. The rate of reaction is greater, and the reaction may be carried out at room temp. (II) may be pure, or the impure prod. of reaction of isobutyraldehyde with HCHO. The ester prepd. in presence of water may be purified over acid ion-exchangers. (I) is a raw material for synthetic resins and softeners.

    2,2-Dimethyl 1,3-propandiol hydroxypivalates - by disproportionating hydroxypivalaldehyde
    5.
    发明专利
    2,2-Dimethyl 1,3-propandiol hydroxypivalates - by disproportionating hydroxypivalaldehyde 未知

    公开(公告)号：DE2234110A1

    公开(公告)日：1974-03-14

    申请号：DE2234110

    申请日：1972-07-12

    Applicant: BASF AG

    Inventor： MERGER FRANZ DR ,  DUEMBGEN GERD DR ,  FUCHS WERNER DR

    IPC: C07C69/675 ,  C07C69/66

    Abstract: 1,3-propanediol hydroxypivalic acid monoester (I) prepn. of disporportionating hydroxypivalaldehyde (II) at increased temp in presence of the hydroxide of Ca, Ba or Sr, as in parent patent, is improved by reaction in presence of Ca(OH)2, Ba(OH)2, or Sr(OH)2 and of water, or in presence of >=1 oxide and/or hydroxide of Li, Mg, Tl, Pb, Bi, La, Ce, Zn, Cd, Mn, Fe, Co, Ni and/or oxides to Ca, Sr and Ba, opt. in presence of water, in place of or in addn. to the hydroxides of Ca, Ba, or Sr. Yields and space-time yields are higher and a pure prod. is obtd. The rate of reaction is greater, and the reaction may be carried out at room temp. (II) may be pure, or the impure prod. of reaction of isobutyraldehyde with HCHO. The ester prepd. in presence of water may be purified over acid ion-exchangers. (I) is a raw material for synthetic resins and softeners.

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