A by-product-terpene-containing cleaning agent for circuit boards after assembly welding

A circuit board cleaning agent and by-product terpene technology, which is applied in the direction of non-surface active cleaning solvents, detergent compositions, non-surface active detergent compositions, etc., to achieve the effects of cleaning, improving the working environment, and saving organic solvents

Active Publication Date: 2015-06-03
泰州市海通资产管理有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Each of these three types has advantages and disadvantages, but in general solvent-based cleaners are fast-evaporating, self-contained cleaners, however, they are non-renewable petrochemicals and require special equipment and ventilation to avoid exposure to toxicity and Other potentially dangerous injuries, water-based cleaners are also an alternative to ozone-depleting chemicals, and at the same time reduce solvent emissions. The disadvantage of water-based cleaners is that they require multiple steps to complete the cleaning job, including two-step rinsing and final drying.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] In a glass beaker, under the condition of stirring, dissolve 10 grams of organic ester in 15 grams of dispersant dipropylene glycol butyl ether, and add it to 75 grams of by-product terpenes at a temperature of 10 ° C ~ 30 ° C, keep stirring, and then sequentially Add 0.05 g of copper corrosion inhibitor and 0.2 g of antioxidant 4,6-di-tert-butyl-3-methylphenol, continue stirring until the components are dissolved, stop stirring, and filter to obtain the product.

Embodiment 2

[0023] In the reaction kettle, under the condition of stirring, 4 kg of organic esters were dissolved in 6 kg of dispersant ethylene glycol butyl ether, and then added to 89 kg of by-product terpenes at a temperature of 10°C to 30°C, kept stirring, and then Add 0.01 kg of copper corrosion inhibitor and 0.1 kg of antioxidant 2,4-dimethyl-6-tert-butylphenol in sequence, continue stirring until each component is dissolved, stop stirring, and filter to obtain the product.

Embodiment 3

[0025] In the reaction kettle, under stirring conditions, 7 kg of organic esters were dissolved in 11 kg of dispersant tripropylene glycol butyl ether, and then added to 82 kg of by-product terpenes at a temperature of 10°C to 30°C, kept stirring, and then sequentially Add 0.03 kg of copper corrosion inhibitor and 0.15 kg of antioxidant 2,4-di-tert-butylphenol, continue stirring until each component is dissolved, stop stirring, and filter to obtain the product.

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PUM

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Abstract

A by-product-terpene-containing cleaning agent for circuit boards after assembly welding is disclosed. The cleaning agent comprises by-product terpene, organic esters, a dispersant, a copper corrosion inhibitor and an antioxidant, adopts the by-product terpene as the main solvent, and has advantages and characteristics of environment protection and capability of being reproducible. The cleaning agent is suitable for using in circuit boards after assembly welding, and has advantages and characteristics of capability of cleaning up, high volatilization speed, high efficiency, no residue, capability of saving organic solvents and improving the working environment, and the like.

Description

technical field [0001] The invention relates to the field of post-welding cleaning of PCB boards in the electronic industry, in particular to a cleaning agent for circuit boards after component welding containing by-product terpenes. Background technique [0002] In my country, turpentine is used as raw material to synthesize camphor and terpineol, etc., which will produce a large number of by-products before the low boiling point. The former is often called industrial dipentene, and the latter is often called terpineol. In fact, they are all α -pinene, α-terpinene, limonene, terpinolene, terpinolene, iso-terpineolene and other terpene mixtures, but the content of each component of the by-products produced by different products is different. The country produces more than 3,000 tons of such by-product terpenes every year, which is a huge amount. The by-product terpenes are a mixture of isomers with very similar properties. It is difficult to separate them, and the separation ...

Claims

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Application Information

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IPC IPC(8): C11D7/60C11D7/50
Inventor 修建东
Owner 泰州市海通资产管理有限公司
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