二丙二醇

有机胺催化一缩二丙二醇合成工艺研究

Research on catalytic synthesis of dipropylene glycol with amine

二丙二醇甲醚醋酸酯；

DPMA Di ( propylene glycol ) methyl ether acetate ;

以丁酮为分散剂，经盐析精制，加入10%三乙醇胺和一缩二丙二醇复合助溶剂，得到了高质量的四磺酸型液体荧光增白剂。

The product with high quality was obtained by using butanone as the dispersant , adding 10 % of triethanolamine-dipropylene glycol complex cosolvents ( w / w % ), and purifying with salting out .

不饱和聚磷酸酯（UPPE）主链结构中含有富马酸二（1,2-丙二醇）酯（BPGF）的三种异构体。

Three kinds of isomers of bis ( 1,2-propyleneglycol ) fumarate were detected in main chain of UPPE by FTIR and NMR .

2,2-二甲基-1,3-丙二醇在270～440K间的热容和相变

Heat Capacity and Phase Transitions of 2,2-Dimethyl-1,3-Propanediol Between 270 and 440 K

1,2-丙二醇是重要的化工原料。本文研究了酯交换法生产碳酸二甲酯联产丙二醇过程中催化剂的脱除及产品质量提高的方法。

1,2-propylene glycol is one of the most important raw materials in chemical industry . In this paper , the depurated processes of 1,2 - propylene glycol obtained in DMC production via transesterification are studied .

以钛酸四正丁酯为催化剂，2-乙基己醇为封端剂合成邻苯二甲酸聚1,2-丙二醇酯、邻苯二甲酸聚1,3-丁二醇酯和邻苯二甲酸聚1,4-丁二醇酯系列聚酯。

The paper introduces the preparation of poly 1,2-propylene phthalate , poly 1,3-butylene phthalate and poly 1,4-butylene phthalate with tetra-n-butyl titanate as the catalyst and 2-ethyl-hexanol as the chain-termination reagent .

研究了氯桥酸酐、顺丁烯二酸酐、乙二醇、二丙二醇和苯乙烯等为原料制备防腐阻燃不饱和聚酯树脂的工艺条件。

Process conditions of preparing anticorrosive and inflame retarding unsaturated polyester resin using chlorendic anhydride , cis-butene diacid anhydride , ethylene glycol , diethylene glycol and styrene as raw material are discussed .

在碱的催化作用下，采用3-氯-1,2-丙二醇与二甲胺进行反应，合成了3-二甲胺基-1,2-丙二醇。

3-dimethylamino-1,2-propanediol was synthesized from 3 - ch loro-1 , 2-propanediol and dimethylamine under the catalysis of alkali and then was characterized by IR , elemental analysis and abbe refractometer .