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propylene glycol
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propylene glycol>glycerin; 丙二醇>丙三醇; 短句来源 Synthesis of Propylene Glycol 丙二醇合成工艺 短句来源 ~((12)); _Σ~(12)的夹角。 短句来源 T 12h; T 12h; 短句来源 STUDY ON ALKYLATION OF TOLUENE AND PROPYLENE OVER HZSM-12 ZEOLITE HZSM-12沸石上甲苯、丙烯烷基化反应的研究 短句来源 
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The castor oil base brake fluid has been found unable to meet the present-day requirements both in its performances and resource.This paper discusses the feasibility of using alkylene oxide polyethers as the lubricant base of brake fluid to replace castor oil. It aslo explores the possibility of utilizing polytriols of different molecular weight range by use of propylene glycol.The technical performances of the new brake fluid ZSM41 as such is said to equal and partly exceed the conventional SY ... 蓖麻油润滑基车用制动液其性能和来源均不能满足当前要求,本文论述了以氧化烯烃聚醇醚代替蓖麻油用作制动液润滑基并讨论了应用丙二醇以扩大使用不同分子量范围的三羟型聚醇醚,由此而制得的ZSM41车用制功液,其性能达到并超过原醇型制动液石油部标准SY2913—77。 文摘来源 The polyesters with terminal hydroxyl groups were prepared by condensation polymerization of adipic acid with 1,4-butanediol or ethylene glycol and, in some cases, a little amount of propylene glycol. The polyurethane thermoplastics were then prepared with the polyester, 4,4'-diphenylmethane diisocyanate and 1,4-butanediol. It was found that the NCO/OH ratio in the thermoplastics and the molecular weight of the polyester show apparent effects on the physical and mechanical properties of th... 采用己二酸、乙二醇(或加入少量1,2-丙二醇)和1,4-丁二醇制备了端羟基聚酯,并用该聚酯和4,4’-二苯基甲烷二异氰酸酯(MDI)、1,4-丁二醇制备了聚酯型热塑性聚氨酯;考察了NCO/OH值、聚酯分子量等因素对热塑性聚氨酯的物理机械性能的影响。结果表明,NCO/OH值和聚酯分子量是影响热塑性聚氨酯物理机械性能最重要的因素。 文摘来源 Both rivanol solution and the mixture of rivanol, glycerol, and propylene glycol were injected into the peritoneal cavities of the female rabbits. There were not significant difference on SGPT and BuN in the rabbits before and after given both rivanol preparations (40mg/kg). The livers and kidneies didn't occur significantly pathological change than control. Rivanol intraperitoneal injection may not impair the liver and kidney. When intrauterine rivanol used for termination of early pregnancy en... 两种利凡诺(40mg/kg)制剂(“水剂”和“合剂”)雌兔腹腔注射,72h后的SGPT和BUN与用药前比较,均无显著差异(P>0.05);肝肾组织亦无明显病理改变。腹腔内大剂量利凡诺并不明显引起肝肾功能和形态损害。如利凡诺“合剂”用于宫腔内抗早孕时,即使利凡诺完全进入腹腔内也还是安全的 文摘来源 << 更多相关文摘 
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