丙二醇

Propylene glycol monoether acetate was synthesized using heteropoly acid as catalyst for the firsttime.

首次以杂多酸为催化酯化法合成丙醇单乙醚乙酸酯。

Benzalacetone 1,2-propylene glycol ketal was synthesized from benzalacetone and 1,2-propylene glycol in the presence of ptoluene sulphonic acid.

以对甲苯磺酸为催化,通过苄叉丙酮与-1,2-丙醇反应合成了苄叉丙酮-1,2-丙醇缩酮。

Water, Cetyl Alcohol, Propylene Glycol, Sodium Lauryl Sulfate, Stearyl Alcohol, Methylparaben, Propylparaben, Butylparaben.

水，十六醇，丙醇，十烷基硫酸钠，硬脂醇， Methylparaben ， Propylparaben ， Butylparaben 。

Water (Aqua), Glycerin, Propylene Glycol, Hydroxyethylcellulose, Tetrasodium EDTA, Citric Acid, Sodium Benzoate.

水（水） ，甘油，丙醇，羟乙基纤维素， Tetrasodium乙胺四乙酸，柠檬酸，苯甲酸钠。

The changes of intrinsic viscosity and end carboxyl group content with temperature and time were studied for poly(trimethylene terephthalate)(PTT), PET and CDP.

研究了聚对苯甲酸丙醇酯(PTT),PET,CDP在不同时间下的特性粘数端羧基含量的变化。

This paper introduces the preparing method, the structure, the properties and applications of poly (trimethylene terephthalate) (PTT), and it compared with PET, PBT et al. engineering plastics.

本文介绍了聚对苯甲酸丙醇酯(PTT)的制法、结构、性能及应,并PET、PBT等工程塑料进行了比较。