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    • 6. 发明申请
    • METHOD FOR THE CONTINUOUS PRODUCTION OF GLUTARALDEHYDE
    • 过程戊二醛连续生产
    • WO01016237A3
    • 2001-12-13
    • PCT/EP2000/008412
    • 2000-08-29
    • C07B61/00C07C45/60C07C45/82C07C47/12
    • C07C45/60Y02P20/127C07C47/12
    • The invention relates to a method for the continuous production of glutaraldehyde by reacting an alkoxydihydropyrane of general formula (I), wherein R represents C1-C20 alkyl, with water at a temperature in the range of from 0 DEG C to 2000 DEG C and a pressure in the range of from 0.01 bar to 16 bar, and obtaining glutaraldehyde and the alcohol that corresponds to the alkoxy group. Water and alkoxyhydropyrane are continuously fed to a reaction column and at the top of the column a distillate enriched with the alcohol that corresponds to the alkoxy group and at the foot thereof a product enriched with glutaraldehyde is removed. The inventive method provides a simple means for producing glutaraldehyde or C-substituted glutaraldehydes continuously and with an improved purity which requires a minimum of equipment.
    • 本发明涉及一种用于连续制备戊二醛的由式(I)的烷氧基​​二氢吡喃的反应,其中,R在从0℃至200℃,并在压力下代表C1-C20烷基,与水的过程 从0.01巴到16巴范围内,以形成戊二醛和相应的醇的烷氧基,其中的水和Alkoxyhydropyran连续供入反应塔和在塔的顶部,以使烷氧基对应的醇富集的馏出物和底部产物在戊二醛富集 取出产品。 利用本发明的方法,有可能以简单的方式来制造戊二醛或C-取代戊二醛kontinierlich具有增加的纯度,需要的设备是低的。
    • 8. 发明申请
    • VINYL ETHER DERIVATIVES
    • 乙烯衍生物
    • WO99023088A1
    • 1999-05-14
    • PCT/US1998/023329
    • 1998-11-03
    • C07C31/04C07C43/16C07C45/60C07C47/12C07D309/30
    • C07D309/30C07C45/60C07C47/12
    • Processes for the manufacture of vinyl ether derivatives, e.g., methoxydihydropyran, are disclosed which comprise reacting acetylene and a lower alcohol, e.g., methanol, to form a vinyl alkyl ether, e.g., vinyl methyl ether, reacting the vinyl alkyl ether so produced with an alpha , beta -unsaturated carbonylic compound, e.g., acrolein, in the presence of the lower alcohol to preferably enhance the conversion of the vinyl alkyl ether to the vinyl ether derivative. In one aspect of the invention, the vinyl ether derivative is methoxydihydropyran which is subjected to hydrolysis to form glutaraldehyde.
    • 公开了用于制造乙烯基醚衍生物的方法,例如甲氧基二氢吡喃,其包括使乙炔和低级醇例如甲醇反应形成乙烯基烷基醚,例如乙烯基甲基醚,使所生产的乙烯基烷基醚与 α,β-不饱和羰基化合物,例如丙烯醛,在低级醇的存在下,优选增强乙烯基烷基醚向乙烯基醚衍生物的转化率。 在本发明的一个方面,乙烯基醚衍生物是经过水解形成戊二醛的甲氧基二氢吡喃。