The polyester in these compositions is a 50 % solution of a maleic acid - prophlene glycol condensate in diallyl phthalate 在这些配方中的聚酯是马来酸- -丙二醇缩合物在酞酸二烯丙酯中的50溶液。
Condensation reaction a chemical reaction in which two molecules are joined together with the elimination of a simpler molecule or group 缩合反应：两个分子通过释出一些简单的分子或基团而连结起来的化学反应。
Many condensation reactions involve the elimination of water , e . g . the formation of peptide bonds between amino acids in the formation of peptides 许多缩合反应都能释出水，例如在氨基酸之间形成肽链时形成的肽键。
A planar tetradentate dinuclear ligand , 3 , 5 - bis ( 2 - pyridyl ) pyrazole , was synthesized by a three - step reaction of esterification , condensation and addition 以2 -吡啶甲酸为原料，经酯化、缩合、加成合成了平面四齿双核配体3 ， 5 -二（ 2 -吡啶基）吡唑。
We have 4 branches , which produce active pharmaceutical ingredients , agrochemicals , peptides related substance , chiral compounds as well as fine & speciality chemicals 公司下属4个生产基地，以原料药&中间体、保护氨基酸&多肽缩合剂、手性化合物为主。
Methods linezolid was prepared by the steps of substitution , reduction , acylation and condensation with biacetyl compond from the starting material 3 , 4 - difluoronotrobenzene 方法以3 , 4 -二氟硝基苯为原料，经取代、还原、酰化、再与侧链双乙酰化合物缩合得到目标化合物。
In this paper , 1 , 1 - diacetate was synthesized from furfural and acetic anhydride by acidic bentonite friendly to environment as catalyst with excellent yield ( 87 . 6 % ) 摘要利用对环境友好的酸性皂土做催化剂，糠醛与乙酸酐发生缩合反应合成了1 , 1 -二乙酸酯，产率高达86 . 6 % 。
The pentaerythritol diacetals were effectively synthesized through condensation reaction of pentaerythritol with aldehydes and ketones promoted by zirconium sulfate - silica gel under microwave irradiation 摘要微波辐射硫酸锆矽胶催化季戊四醇与醛、酮缩合反应，高收率制得了双缩醛和双缩酮化合物。
Methods pinocembrin and its derivatives were synthesized with 2 , 4 , 6 - trihydroxy - phenylethanone as the starting material via four steps including protection of the hydroxy - group , condensation , cyclization and deprotection 方法以2 , 4 , 6 -三羟基苯乙酮为起始原料，经羟基保护、缩合、环化、脱保护合成目标化合物。
Jintan star chemical co . , ltd . is a professional fine chemical production enterprise which has rich experience in diazo reaction , friedel - crafts and reducing reaction 我公司是一家专业化、科研型化工生产企业，在重氮化反应、傅克反应、还原反应、缩合反应、霍夫曼反应等方面有丰富的经验。热忱欢迎您的光临指导！
