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二醇单乙醚乙酸酯。

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

水（水） ，甘油，丙二醇，羟乙基纤维素， Tetrasodium乙二胺四乙酸，柠檬酸，甲酸钠。

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

水，十六醇，丙二醇，十二烷基硫酸钠，硬脂醇， Methylparaben ， Propylparaben ， Butylparaben 。

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.

本文介绍了聚对二甲酸丙二醇酯(PTT)的法、构、性能及应,并和PET、PBT等工程塑料进行了比较。

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

研究了聚对二甲酸丙二醇酯(PTT),PET,CDP在不同温度和时间下的特性粘数和端羧基含量的变化。

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

以对甲磺酸为催化,通过苄叉丙酮与-1,2-丙二醇反应合成了苄叉丙酮-1,2-丙二醇缩酮。