Pidan is prepared from raw duck egg by alkaline treatment.

摘要皮蛋是生鸭蛋经由碱处理而制成的。

Five Schiff bases were prepared from piperonal and diamines by condensation reaction.

合成新的双-胡椒醛缩二胺类席夫碱化合物。

Abstract A lightfast aq. polyurethane emulsion for leather finishing was prepared mainly from aliphatic isocyanate.

选择脂肪族异氰酸酯为主要原料，制备了一种耐光型水性聚氨酯皮革涂饰剂。

Novel controlled releasing polythiourea microcapsules were prepared from terephthaloyl diisothiocyanate and o-phenylenediamine by interfacial polycondensation.

以对苯二甲酰异硫氰酸酯和邻苯二胺为原料通过界面缩聚法合成了聚硫脲缓释微胶囊。

Levocetirizine Dihydrochloride was prepared from benzoyl chloride by acidylation,hydrogenation,cyclization with an overall yield of 8.05%.

以苯甲酰氯为原料,经酰化,还原,环合等反应合成左旋西替利嗪盐酸盐,反应总收率为8.05%。

Pinic acid is prepared from a-pinene and used as active component of fluxes in electronic industry.

以α-蒎烯为原料合成了蒎酸,并应用于电子工业助焊剂中。

The purity 99.99% of scandium oxide(Sc 2O 3) was prepared from tungstenic slag with extraction process.

用萃取法从钨矿渣制得纯度为99．99％的氧化钪。

Aluminum propoxide for the Tishchenko condensation of propanal to propyl propionate is prepared from aluminum powder and propanol.

以合成出的丙醇铝为催化剂,无水氯化锌为助催化剂,用丙醛一步合成了丙酸丙酯,收率可达92％,选择性可达93％。

Carbon tetrabromide was prepared from acetone and sodium hypobromite by adding tetrabutylammonium bromide.The yield and purity were very satisfactory.

向次溴酸钠溶液中滴加适量的丙酮,在四丁基溴化铵催化下,高产率得到四溴化碳。

Solid acid alchlor catalyst was prepared from anhydrous aluminium trichloride through liquid solid solvent method,with pretreated bentonite as support.

以无水三氯化铝为原料,并以处理过的膨润土为载体,采用液固溶剂法制备固体酸催化剂。