52338-87-1Relevant articles and documents
Influence of the hydrophobic groups on quaternary ammonium additives for copper electrodeposition
Wang, Wenjing,Hua, Hanyong,Yin, Li,He, Yanfeng
, p. D651 - D656 (2014)
A series of quaternary ammonium compounds with different hydrophobic groups as spacers were synthesized. The influence of the hydrophobic groups on the additives for copper electrodeposition was investigated using a galvanostatic measurement on a RDE electrode. The increase of the length of the alkyl chain within the compounds enhances the suppressing capability. The introduction of a hydroxyl group or a phenyl ring into the hydrophobic groups in the molecular structures reduces the suppressing capacity. The results obtained from SEM measurements indicate that the presence of the quaternary ammonium compounds in the electrolytes may produce regular and relative leveling morphologies of copper deposits. The via-filling experiments without SPS exhibit that an almost complete filling was achieved for compound 1d (C6 alkyl chain as a hydrophobic group), whereas a bad filling was obtained for compound 1a (C3-OH chain as a hydrophobic group). With SPS, the vias were perfectly filled both for compound 1a and 1d. However, the initial increment of growth was still conformal for the compound 1a. These results indicate the influence of the hydrophobic groups of the quaternary ammonium compounds on the filling behaviors and they are in agreement with the galvanostatic measurements at different electrode rotation speeds.
Method for synthesizing 1, 3-bi [3-(dimethylamino) propyl] urea
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Paragraph 0023-0041, (2019/07/08)
The invention relates to a method for synthesizing 1, 3-bi [3-(dimethylamino) propyl] urea, which comprises the following steps: 1, taking urea and N, N-dimethyl-1, 3-propylene diamine and mixing in acertain ratio, adding a protective reagent, heating to 105-150 DEG C for reaction; wherein the protective agent is selected from one or more of hydrazine or hydrazine derivatives; 2, removing unreacted N, N-dimethyl-1, 3-propylenediamine to obtain the desired product 1, 3-bi [3-(dimethylamino) propyl] urea. The protective reagent slowly decomposes into a reducing ammonia gas under the reaction heating condition, protects the reaction product, and reduces the possibility of oxidation of the product. The synthesis method can directly obtain a colorless product without nitrogen protection, without further purification or refining, and the product can also be directly used as a raw material for further reaction. The method has low requirements on reaction conditions, simple equipment, and cansignificantly reduce the production cost of the target compound, and is suitable for producing a small amount and a large amount of 1, 3-bi [3-(dimethylamino) propyl] urea.
NOVEL CYCLIC AMINE COMPOUND, AND PROCESS FOR PRODUCING POLYURETHANE RESIN USING SAME
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Paragraph 0149; 0150, (2013/11/19)
To provide a novel cyclic amine compound and a process for producing a polyurethane resin by using it. A3-hydroxy-1,5-diazabicyclo[3.2.2]nonane represented by the following formula (1), and a process for producing a polyurethane resin by using a catalyst for producing a polyurethane resin, which contains the 3-hydroxy-1,5-diazabicyclo[3.2.2]nonane. When the compound represented by the formula (1) has optical isomers, diastereomers or geometric isomers, the compound includes both a mixture of any of them and an isolated isomer of any of them. [in the above formula (1), each of R1, R2, R3, R4, R5, R6, R7 and R8 which are independent of one another, is a hydrogen atom, a C1-4 alkyl group, a hydroxy group, a hydroxymethyl group or a C1-4 alkoxy group.]
