1) pre-esterification
预酯化
1.
The pre-process conditions of waste edible oil,pre-esterification for waste edible oil and methanol catalyzed by H2SO4 and transesterification for waste edible oil and methanol catalyzed by NaOH to form biodiesel were investigated.
研究了餐饮废油的水化脱胶、酸催化预酯化和碱催化酯交换反应制备生物柴油的工艺条件。
2.
The influences of technical conditions on pre-esterification of oil were investigated.
考察了相关条件对油脂预酯化反应的影响,并通过正交实验和数据分析,得到最佳条件为固体酸用量3%、醇油摩尔比6∶1、反应温度80℃、反应时间2 h。
3.
seed oil from Panzhihua area was converted to biodiesel by pre-esterification catalyzed by H2SO4 and transester-ification catalyzed by KOH.
以攀枝花地区的麻疯树籽油为原料,研究了KOH催化酯交换过程对原料油酸值的要求,以及麻疯树籽油性质对浓硫酸催化预酯化过程的适应性。
2) esterification
[英][e,sterifi'keiʃən] [美][ɛ,stɛrəfə'keʃən]
预酯化
1.
It is proved that the best conditions for esterification are 2% of H2SO4 as catalyst,16% of methanol,75 ℃ of reaction temperature and reacting for 4 hours.
研究了由地沟油制备生物柴油的工艺,通过正交试验得到地沟油预酯化反应的最佳条件是:浓硫酸用量为2%、甲醇用量为16%、反应温度75℃、反应时间4 h;地沟油酯交换反应的最优工艺条件是:甲醇20%、KOH用量1%、反应温度65℃、反应时间2 h,且制备所得的生物柴油达到国家生物柴油标准要求。
2.
The pretreatment conditions of esterification to the waste plam oil are optimized by orthogonal experiments.
利用固体酸作催化剂对酸值较高的废棕榈油进行预酯化,采用正交试验优化预酯化的工艺条件,最佳工艺条件是:反应温度为70℃,反应时间为4。
3) moisture curing urethane prepolymer
湿(分)固化聚氨酯预聚物
4) pre-polyester
预聚酯
5) esterification
[英][e,sterifi'keiʃən] [美][ɛ,stɛrəfə'keʃən]
酯化
1.
Kinetics of esterification and transesterification for biodiesel production in two-step process;
酯化-酯交换两步法制备生物柴油的动力学
2.
Progress of catalysts for producing biodiesel by esterification and transesterification reaction;
酯化及转酯化法制备生物柴油过程中催化剂的研究进展
3.
Catalytic performance of phosphotungstic acid immobilized by sol-gel method for esterification of critic acid;
溶胶-凝胶法制备负载磷钨酸催化剂及其对柠檬酸酯化反应的性能
6) esterfication
酯化
1.
Solid superacids SO~2-_4/TiO_2-Al_2O_3 were prepared and used to catalyze the esterfication of iso-octyl alcohol and by-products in oxidization reaction of durene,which were pretreated before esterifying reaction.
考察了催化剂用量、异辛醇与混合酸的质量比、反应时间等因素对酯化反应的影响,确定了较佳的反应工艺条件:m(催化剂)∶m(异辛醇)∶m(混合酸)=0。
2.
The influence factors esterfication reaction, such as catalyst amount, acid alcohol mole ration,reaction time were investigated.
考察了催化剂用量、原料配比、反应时间对酯化反应的影响。
3.
On the basis of analyzing the starch reaction theory of esterfication and acknowledging the existing work that had been done by predecessors, the effects of conditions on the reactions together with the product's properties including clarity, the freeze-thaw stability and the degree of substitute (DS) were systematically studied by means of changing the condition such as the react.
在前人研究工作的基础上 ,通过改变反应温度、pH值、反应时间和醋酸酐用量等条件 ,探讨了这些条件对酯化反应的影响 ,并对产品的糊透明度、取代度、冻融稳定性等进行了系统的研究 ,并用Brabender粘度仪测定了样品的起糊温度、粘度峰值等温度变化过程中样品粘度性质的变
补充资料：氯乙烯、马来酸丁酯、马来酸单丁基酯预聚体
CAS：68797-32-0
分子式：(C12H20O4·C8H12O4·C2H3Cl)x
中文名称：(Z)-2-丁烯二酸二丁酯与2-丁烯二酸(Z)单丁酯和氯乙烯的聚合物
氯乙烯、马来酸丁酯、马来酸单丁基酯预聚体
英文名称：2-Butenedioic acid (Z)-, dibutyl ester, polymer with (Z)-butyl hydrogen 2-butenedioate and chloroethene
分子式：(C12H20O4·C8H12O4·C2H3Cl)x
中文名称：(Z)-2-丁烯二酸二丁酯与2-丁烯二酸(Z)单丁酯和氯乙烯的聚合物
氯乙烯、马来酸丁酯、马来酸单丁基酯预聚体
英文名称：2-Butenedioic acid (Z)-, dibutyl ester, polymer with (Z)-butyl hydrogen 2-butenedioate and chloroethene
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条