Methanesulfonic acid tin-plating solution

A technology of methanesulfonic acid and tin plating solution, which is applied in the field of methanesulfonic acid tin plating solution, can solve problems such as unintroduced product quality, and achieve the effect of good coating quality

Active Publication Date: 2017-12-22
QUAKER CHEM CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Phytic acid, citric acid, and ethylenediaminetetraacetic acid have a strong chelating effect on metal ions. Whether the use of a large amount of this strong chelating antioxidant alone will affect the deposition of metal tin on the steel plate is not discussed in this patent. To answer this question, but also did not introduce the quality of the electroplated product when the combined antioxidant is added to the methanesulfonic acid electroplating solution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Prepare the electroplating solution with the composition and content shown in the table below. First add water to the plating tank, then add methanesulfonic acid, antioxidant, divalent tin ions and grain refiner accordingly, and finally circulate for half an hour to obtain a uniform electroplating solution.

[0046]

Embodiment 2

[0048] Prepare the electroplating solution with the composition and content shown in the table below. First add water to the plating tank, then add methanesulfonic acid, antioxidant, divalent tin ions and grain refiner accordingly, and finally circulate for half an hour to obtain a uniform electroplating solution.

[0049]

[0050]

Embodiment 3-7

[0065] Using the same tin plating solution formula as in Example 1, the tin plating solution of Example 3-7 was prepared, the difference is only in the auxiliary antioxidant (2R, 3S)-2-(3,4-dihydroxyphenyl)-3 , The content of 4-dihydro-2H-chromene-3,5,7-triol in the compound antioxidant is shown in the table below, and the sum of the content of hydroquinone and auxiliary antioxidant Still at 20%.

[0066]

[0067] Similarly, the amount of tin sludge produced in the tin plating solution of Examples 3-7 was tested, and it was found that the produced tin sludge was at a similar level to that of Example 1, both of which were lower than those of Comparative Examples 1-3.

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Abstract

The invention relates to a methanesulfonic acid tin-plating solution. The methanesulfonic acid tin-plating solution comprises 10-40 g/L of Sn2+, 1-5% of methanesulfonic acid, 0.5-15% of a compound antioxidant and 0.5-4% of a grain refiner, wherein the compound antioxidant comprises a main antioxidant body and an auxiliary antioxidant body; the main antioxidant body is prepared from one or more of phenol, catechol, resorcinol, hydroquinone and carboxyl, amidogen, nitro and sulfonate group substitutes thereof; and the auxiliary antioxidant body is prepared from (2R, 3S)-2-(3,4- dihydroxy phenyl)-3,4-dihydro-2H-benzopyran-3,5,7-triol and (2S,3R)-2-(3,4-ihydroxy phenyl)-3,4-dihydro-1(2H)-benzo-3,5,7-triol3-(3,4,5-trihydroxybenzoic acid). The tin-plating solution contains the compound antioxidant, tin slurry in the plating solution can be effectively reduced, and meanwhile after the grain refiner is added, a tin-plated plate with a coating having excellent quality can be obtained.

Description

technical field [0001] The invention relates to a methanesulfonic acid tin plating solution. The tin plating solution contains a compound antioxidant, which can effectively reduce the generation of tin sludge in the plating solution, and at the same time, after adding a grain refiner, the plating layer with excellent quality can be obtained tin plate. Background technique [0002] Methanesulfonic acid (MSA) tin plating solution is a new type of tin plating solution that can be used in high-speed tin plating production lines. Compared with traditional halogen method and phenol sulfonic acid (PSA) tin plating solution, the tin plating solution has the following advantages: [0003] 1. Does not contain toxic substances such as fluorine and free phenol, the overall plating solution has low toxicity, and the waste solution treatment is simple; [0004] 2. The operating window of MSA plating solution is wide; [0005] 3. The amount of tin sludge produced is less than that of hal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D3/32
CPCC25D3/32
Inventor 杨子平
Owner QUAKER CHEM CHINA
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