MIXTURES OF ITACONIC ACID OR ITACONIC ACID DERIVATIVES AND PRIMARY AMINES FOR PRODUCING 1,3- AND 1,4-ALKYL METHYL PYRROLIDONES
申请人:Wabnitz Tobias
公开号:US20110251119A1
公开(公告)日:2011-10-13
The present invention relates to a mixture comprising itaconic acid or an itaconic acid derivative and a primary amine of the formula (I)
R—NH
2
(I)
where the molar ratio of primary amine to itaconic acid or the itaconic acid derivative is in the range from 0.5:1 to 20:1, wherein the mixture comprises 50 mole percent or less of 4-carboxypyrrolidones of the formula (II), derivatives of the 4-carboxypyrrolidones of the formula (II) and 4-carbamidopyrrolidones of the formula (III) based on the itaconic acid used or the itaconic acid derivative used
and in which R is a linear or branched saturated aliphatic radical having 1 to 24 carbon atoms or a saturated cycloaliphatic radical having 3 to 24 carbon atoms.
The invention further provides for the use of the inventive mixtures for preparing 1,3-alkylmethylpyrrolidones and/or 1,4-alkylmethylpyrrolidones, and also a process for preparing 1,3-alkylmethylpyrrolidones and/or 1,4-alkylmethylpyrrolidones.
In addition, the present invention relates to mixtures comprising 1,3-alkylmethylpyrrolidones and/or 1,4-alkylmethylpyrrolidones and 1,3-alkylmethylpyrrolidines, where the proportion of 1,3-alkylmethylpyrrolidines is in the range from 10 to 10 000 ppm, and to mixtures comprising 1,3-alkylmethylpyrrolidone and 1,4-alkylmethylpyrrolidone, wherein the molar ratio of 1,3-alkylmethylpyrrolidone to 1,4-alkylmethylpyrrolidone is in the range from 1:1 to 10:1.
本发明涉及一种混合物,包括吡啶二酸或吡啶二酸衍生物和式(I)的一种主要胺,其中主要胺与吡啶二酸或吡啶二酸衍生物的摩尔比在0.5:1到20:1的范围内,其中混合物包括50摩尔%或更少的基于所使用的吡啶二酸或吡啶二酸衍生物的式(II)的4-羧基吡咯烷酮衍生物和4-羟基吡咯烷酮衍生物以及基于所使用的吡啶二酸或吡啶二酸衍生物的式(III)的4-氨基吡咯烷酮衍生物,其中R是具有1至24个碳原子的线性或支链饱和脂肪基或具有3至24个碳原子的饱和环脂基。该发明还提供了使用该混合物制备1,3-烷基甲基吡咯烷酮和/或1,4-烷基甲基吡咯烷酮的方法,以及制备1,3-烷基甲基吡咯烷酮和/或1,4-烷基甲基吡咯烷酮的方法。此外,本发明还涉及包含1,3-烷基甲基吡咯烷酮和/或1,4-烷基甲基吡咯烷酮和1,3-烷基甲基吡咯烷的混合物,其中1,3-烷基甲基吡咯烷的比例在10至10,000 ppm的范围内,并且涉及包含1,3-烷基甲基吡咯烷酮和1,4-烷基甲基吡咯烷酮的混合物,其中1,3-烷基甲基吡咯烷酮与1,4-烷基甲基吡咯烷酮的摩尔比在1:1到10:1的范围内。