It is a condensation polymer of phenol and formaldehyde activated with an alkaline catalyst.
它是酚与甲醛在一种碱性催化剂作用下缩聚的聚合物。
The condensation two-component RTV-2 silicone rubber was prepared by taking 107 silicone rubber as the main raw material, TEOS as the cross-linking agent, and organic tin as catalyst.
以107硅橡胶为主要原料，正硅酸酯类为交联剂，有机锡类为催化剂，配制了缩合型双组分室温硫化(RTV - 2)硅橡胶。
The second polyimide polymer is prepared with aromatic tetracid dihydride and aromatic diisocyanate and through a one-step condensation reaction in organic solvent and under the action of catalyst.
第二种聚 酰亚胺聚合物是芳香族四酸二酐与芳香族二异氰酸酯，在有机溶剂中，在催化剂的作用下，一步法缩合反应制备得到；
Conclusion: Acetic acid is an important catalyst in the condensation reaction. Schiff bases had antibacterial activity.
结论：乙酸是催化剂，对缩合反应有利，希夫碱化合物具有一定抗菌活性。
It can be used as catalyst or catalyst carrier for dewaxing via isomerization, selective hydrogenation, cracking, condensation of alcohol and aldehyde, etc.
可在异构脱蜡、选择性加氢及裂化、醇醛缩合等反应中用作催化剂的活性组分和载体。
Polystyrene supported polyethylene glycol was used as catalyst in the condensation reaction of citral and acetone, yield of pseudoionone was 77.4%.
将聚苯乙烯固载的聚乙二醇用于催化柠檬醛与丙酮的缩合反应。
Amyl cinnamaldehyde was synthesized from benzaldehyde and n-heptanal by aldol condensation with catalyst potassium hydroxide in solvent ethylene glycol.
以苯甲醛和正庚醛为原料，乙二醇为溶剂，在氢氧化钾催化作用下羟醛缩合合成甲位戊基桂醛。
Respectively using barium hydroxide and a basic anion exchanger as a catalyst, 2, 2-bis (hydroxymethyl) butyraldehyde is prepared from the Aldol condensation of butyraldehyde with formaldehyde.
在碱性催化剂的存在下，甲醛和丁醛经羟醛缩合反应合成2,2—二羟甲基丁醛。
The design of this subject: silicon coupling was used as raw material, the reaction type is hydrolytic condensation, acid, alkali and organic tin was used as catalyst.
本课题设计以硅烷偶联剂为原料，反应类型为水解缩合，选用酸、碱，有机锡为催化剂。
A novel solid catalyst (CC-1) for self-condensation reaction of cyclohexanone were developed.
研制了一种应用于环己酮自缩合反应的新型固体催化剂CC - 1。
The invention also relates to the catalyst C and methods involving the cross-linking of silicon by dehydrogenization with condensation (anti-cling coating on paper).
本发明还涉及催化剂C和包含通过脱氢缩合交联有机硅的方法（在纸张上的非粘涂层）。
The preparation of 2,2-dimethyl-3-hydroxy propanal from the condensation of formaldehyde and i-butyraldehyde by using triethylamine as catalyst was studied.
以异丁醛和甲醛为原料，三乙胺为催化剂，羟醛缩合法合成了2，2-二甲基-3-羟基丙醛。
The preparation of 2,2-dimethyl-3-hydroxy propanal from the condensation of formaldehyde and i-butyraldehyde by using triethylamine as catalyst was studied.
以异丁醛和甲醛为原料，三乙胺为催化剂，羟醛缩合法合成了2，2-二甲基-3-羟基丙醛。
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