查询词典 diglycol

Diglycol diacetate had been obtained with sulfuric acid or toluene-p-sulfonic acid as catalyst in lab.

研究了在实验室条件下，以硫酸、对甲苯磺酸为催化剂合成二甘醇二醋酸酯的方法。

As important industrial chemicals, dihydroxy alcohols are applied for many fields, classical dihydroxy alcohols include l,4BD0, diglycol, NPG, 1,3PDO, HDO and so on. MPO is a kind of new dihydroxy alcohols. Because of its unique molecular structure, 2-methyl-1,3-propanediol is instead of classical dihydroxy alcohols gradually. So MPO has huge market foreground.

二元醇类作为医药、涂料工业的重要中间体应用非常广泛，传统的二元醇有1，4-丁二醇(1，4BDO)、二甘醇、新戊二醇、1，3-丙二醇(1，3PDO)、己二醇等。2-甲基-1，3-丙二醇是一种新型二元醇，由于其独特的分子结构使其在很多方面正逐渐取代传统二元醇，有很大的市场前景，但国内尚无完整地生产工艺。

Flame—retardant resin was prepared by the condensation and polymerization of phosphoric acid, trihydroxy methyl propane and epoxy chloropropane,the resin was then reacted with hexane diacid and diglycol under certain condition ,resulting in polyol containing 1.5% P and 17— 18% polyester polyol, which was foamed with polyisocyanate, water and catalyst by one— step method, producing fire...

通过磷酸、三羟甲基丙烷和环氧氯丙烷的缩合和聚合反应制得阻燃树脂，然后将它与己二酸、一缩二乙二醇在一定条件下反应制得含P1.5%和含Cl17～18%的聚酯多元醇，再将它与多异氰酸酯、水、催化剂等组分采用一步法发泡工艺制得阻燃聚氨酯软泡塑料。

Flame— retardant resin was prepared by the condensation and polymerization of phosphoric acid, trihydroxy methyl propane and epoxy chloropropane,the resin was then reacted with hexane diacid and diglycol under certain condition ,resulting in polyol containing 1.5% P and 17— 18% polyester polyol, which was foamed with polyisocyanate, water and catalyst by one— step method, producing fire—resistant PU soft foam.

通过磷酸、三羟甲基丙烷和环氧氯丙烷的缩合和聚合反应制得阻燃树脂，然后将它与己二酸、一缩二乙二醇在一定条件下反应制得含P1.5%和含Cl17～18%的聚酯多元醇，再将它与多异氰酸酯、水、催化剂等组分采用一步法发泡工艺制得阻燃聚氨酯软泡塑料。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。