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PEG coupled heterocyclic compound and application thereof in acidic bright copper plating

A heterocyclic compound and compound technology are applied to the PEG-coupled heterocyclic compound and its application field in acid bright copper plating, which can solve the problems such as the easy imbalance of brightener components, and achieve the improvement of current density range, increase of solubility, Avoid the effect of precipitation

Pending Publication Date: 2020-11-06
WENZHOU INST UNIV OF CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented inventor describes an improved chemical called pegylated hydroxycarboxylic acid dimer esters. These new polymers have better properties than regular ones such as being easier to dissolved into organic solutions like paint without losing their original structure when mixed together. They increase its ability to mix well even small amounts of ingredients during production while still remaining stable over long periods of storage. Additionally they enhances the dispersibility of certain substituents within these materials by forming micelles around them rather than just create tiny drops inside solution. Overall this results in higher efficiency and quality brightening agents for various applications including paints.

Problems solved by technology

This patented technical problem addressed by our research group relates to improving the quality of an alkaline darkening copper plate bath without adding extra agents or increasing costs due to higher temperatures needed during manufacturing process.

Method used

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  • PEG coupled heterocyclic compound and application thereof in acidic bright copper plating
  • PEG coupled heterocyclic compound and application thereof in acidic bright copper plating
  • PEG coupled heterocyclic compound and application thereof in acidic bright copper plating

Examples

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Effect test

Embodiment 1

[0038] A PEG-coupled heterocyclic compound is 4,5-dihydrothiazole-2-mercaptopolyethylene glycol 1000, which is obtained by substitution reaction between PEG1000 and 4,5-dihydrothiazole-2-thiol, and its structural formula is as follows:

[0039]

[0040] The synthesis method of the 4,5-dihydrothiazole-2-mercaptopolyethylene glycol 1000 is as follows: PEG1000 (0.12 mol), 4,5-dihydrothiazole-2-thiol (0.1 mol) and triphenyl Phosphorus (0.1 mol) was dissolved in 400 ml of dry tetrahydrofuran, and diisopropyl azodicarboxylate (0.12 mol) was slowly added dropwise at a temperature of 20-30°C; when 4,5-dihydrothiazole-2- After the thiol was completely converted, the reaction was stopped; the reaction mixture was concentrated, and the product was purified by recrystallization from the remaining viscous liquid ether with a yield of 80%.

Embodiment 2

[0042] A PEG-coupled heterocyclic compound, which is 1H-benzo[d]imidazole-2-dithiopolyethylene glycol 4000, is composed of PEG4000 and 2-dithio-1H-benzo[d]imidazole through a substitution reaction Obtained, the structural formula is as follows:

[0043]

[0044] The synthesis method of the 1H-benzo[d]imidazole-2-dithio PEG4000 is as follows: PEG4000 (0.12 mol), 2-dithio-1H-benzo[d]imidazole (0.1 mol), triphenyl Phosphate (0.1 mol) was dissolved in 400 ml of dry THF, and diisopropyl azodicarboxylate (0.12 mol) was slowly added dropwise at a temperature of 20-30°C; when 2-dithio-1H-benzene After [d] imidazole was completely converted, the reaction was stopped; the reaction mixture was concentrated, and the remaining viscous liquid ether was recrystallized and purified to obtain the product with a yield of 80%.

Embodiment 3

[0046] A PEG-coupled heterocyclic compound as sodium 3-(2-(6-(PEG8000)benzo[d]thiazol-2-yl)dithio)propane-1-sulfonate modified with methylsulfonic acid PEG8000 and sodium 3-(2-(6-hydroxy-benzo[d]thiazol-2-yl)dithio)propane-1-sulfonate were obtained by substitution reaction, the structural formula is as follows:

[0047]

[0048] The synthesis method of the sodium 3-(2-(6-(PEG8000)benzo[d]thiazol-2-yl)dithio)propane-1-sulfonate is as follows: PEG8000 (0.12 mol), sodium 3-(2-(6-hydroxy-benzo[d]thiazol-2-yl)dithio)propane-1-sulfonate (0.1 mol), sodium hydroxide (0.1 mol), dissolved in In 400 ml of dry tetrahydrofuran, heat to reflux for three hours; when 3-(2-(6-hydroxy-benzo[d]thiazol-2-yl)dithio)propane-1-sulfonate sodium is completely converted , to stop the reaction; the reaction mixture was concentrated, and the remaining viscous liquid ether was recrystallized and purified to obtain the product with a yield of 80%.

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Abstract

The invention belongs to the technical field of acid bright copper plating additives and relates to a PEG coupled heterocyclic compound and application thereof in acid bright copper plating. The PEG coupled heterocyclic compound can be used as a leveling agent and a grain refiner, more importantly, can increase the solubility of a slightly soluble component in a brightener in a water phase, effectively avoid the precipitation of the slightly soluble component, meanwhile, improve the compatibility of the slightly soluble component with other components in the brightener, maintain the balance among the components, and avoid the problem of proportional imbalance caused by overlarge consumption speed difference or partial precipitation of the components; the PEG coupled heterocyclic compound,a polyether surfactant and a dithionate compound are pre-prepared into the brightener to be applied to acid copper plating; and through the synergistic effect of the three compounds, the stability ofan MN type brightener system is improved, and meanwhile, the current density range is widened on the basis that good leveling performance is ensured.

Description

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Claims

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Application Information

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Owner WENZHOU INST UNIV OF CHINESE ACAD OF SCI
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