聚乳酸(PLA)是一种线性脂肪族聚酯的聚乳酸中自然产生的或由丙交酯开环缩合催化剂组产生。
Polylactic acid (PLA) is a linear aliphatic polyester produced by poly-condensation of naturally produced lactic acid or by the catalytic ring opening of the lactide group.
换成缩合固化。这些化合物不用铂催化剂，因此不会受到以上因素的影响。
Switch to a condensation curing compound. These compounds do not use platinum and thus are not affected by any of the above.
其制备方法是以氯化铵为催化剂，原甲酸三乙酯为解水剂，由无水乙醇和环己酮缩合合成。
Cyclohexanone diethyl acetal was prepared from cyclohexanone with anhydrous ethanol as reactant, ammonium chloride as catalyst, triethyl orthoformate as water scavenger.
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。
Conclusion: Acetic acid is an important catalyst in the condensation reaction. Schiff bases had antibacterial activity.
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 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.
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。
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.
研究了催化剂用量等因素对缩合的影响，考察了脱水、催化加氢的条件。
The amount of catalysts and other factors in condensation were investigated. The conditions on dehydration and hydrogenation were also investigated.
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。
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.
用途：用作缩合剂，生产甲酸甲酯的催化剂，用于医药原料的有机合成。
Use: used as a reduction agent, a catalyst for the production of methyl formate, and organic synthesis of pharmaceutical raw materials.
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。
A novel solid catalyst (CC-1) for self-condensation reaction of cyclohexanone were developed.
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.
以愈创木酚为起始原料，采用各种不同的催化剂与溴苯缩合制备得到邻甲氧基二苯醚，并研究了碱、催化剂、反应温度、反应时间和加料方式各种因素对该反应的影响。
Methoxydiphenyl ether was synthesized from guaiacol by using various catalysts and bases. The influences of base, catalyst, temperature, time and the way of feeding on the reaction were studied.
以硅胶为催化剂，丙酮和甲醛可经常压缩合反应合成甲基乙烯基酮。
Atmospheric vapor phase catalytic condensation of formaldehyde with acetone for manufacture of methyl vinyl ketone has been studied.
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 invention also relates to the catalyst C and methods involving the cross-linking of silicon by dehydrogenization with condensation (anti-cling coating on paper).
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；
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.
以氮杂环庚—2—酮和1—溴十二烷为原料合成氮酮，用氢氧化钾为反应缩合剂，PEG—400为相转移催化剂。
Synthesis of azone was carried out from azacycloheptan-2-one and 1-bromododecane using KOH as condensation agent and PEG-400 as phase transfer catalytic agent.
研究了2 -氨基- 2' -羟基- 1,1 ' -联萘衍生的有机小分子催化剂催化的直接羟醛缩合反应。
The direct aldol reactions catalyzed by organocatalyst derived from 2-amino-2 '-hydroxy-1, 1' -binaphthyl were studied.
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。
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。
It can be used as catalyst or catalyst carrier for dewaxing via isomerization, selective hydrogenation, cracking, condensation of alcohol and aldehyde, etc.
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