Abstract:
An improved process is proposed for preparing cyclocarbonate-functionalized compounds of the general formula (I) where R 1 and R 2 in each occurrence are independently selected from hydrogen, methyl and ethyl, I in each occurrence independently is from 2 to 50, m in each occurrence independently is 0 or 1, and n is = 3, subject to the proviso that the sum of all I values in the molecule is from 5 to 100, by reacting a chloroformate of formula (II) with a trifunctional amine of the general formula (III) characterized in that the reacting is carried out in an aqueous/organic two-phase system in the presence of an auxiliary base and of a phase transfer catalyst.
Abstract translation:提出了用于制备通式(I)的环碳酸酯官能化的化合物的改进方法,其中R 1和R 2在每次出现时独立地选自氢,甲基和乙基,I在每次出现时独立地为2至50,m in 通过使式(II)的氯甲酸酯与一般的三官能胺反应,各自独立地为0或1,并且n为= 3,条件是分子中所有I值的总和为5至100 式(III)的特征在于反应在含水/有机两相体系中在辅助碱和相转移催化剂存在下进行。
Abstract:
The present invention relates to novel uses of copolymers for removing and/or reducing deposits in the fuel system and/or injection system of direct-injection diesel and/or gasoline engines.
Abstract:
The invention relates to corrosion inhibitors for fuels and lubricants. The invention also relates to uses of corrosion inhibitors in fuels and lubricants.