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Non-flammable cleaner composition

A cleaning composition, non-flammable technology, applied in the direction of non-surface active detergent composition, detergent composition, organic non-surface active cleaning composition, etc., can solve the problems of slow drying of IPA, easy to produce stains, etc. achieve high reliability

Inactive Publication Date: 2012-05-30
SENJU METAL IND CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] As unrestricted detergents, there are also water-based detergents such as terpene compounds mixed with water, but in the drying of printed substrates, organic solvents such as IPA (isopropanol) need to be used, and Freon 12, di Compared with methyl chloride, etc., IPA used in the drying of water-based detergents has a slow drying property and is prone to stains after washing, so there is a problem in appearance

Method used

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  • Non-flammable cleaner composition

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Experimental program
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Effect test

Embodiment

[0028] Prepare according to the compounding quantity described in Table 1, mix well and prepare a cleaning composition. The insulation resistance test and the solvent resistance test after cleaning the printed circuit board were performed using various compounded detergents after being left to stand for 3 months. Table 1 shows the results of the insulation resistance test and the solvent resistance test.

[0029] [Table 1]

[0030]

[0031] ※ If the insulation resistance value is low and cannot be measured, use 1×10 7 Shown below.

[0032] 1. Insulation resistance test

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Abstract

A bromine-containing solvent, which has been used as an alternative solvent to a chlorofluorocarbon solvent or a chlorine-containing solvent, is characterized in that it is likely to degrade compared with a chlorofluorocarbon solvent or a chlorine-containing solvent. In the conventional bromine-containing cleaner compositions, the degradation of the compositions are prevented by using a corrosion-protecting agent or a stabilizing agent (e.g., nitroethane). However, when the cleaner compositions are used as cleaners for print circuit boards, the reduction in insulation resistance or leak failure is often caused. Thus, provided is a non-flammable cleaner composition comprising a mixture of a bromide selected from n-propylbromide, methylenebromide, bromochloromethane, n-butylbromide, isobutylbromide, sec-butylbromide and ter-butylbromide as a stabilizer for a bromine-containing solvent and an alkene- or alkyne-type hydrocarbon having 4 to 10 carbon atoms.

Description

technical field [0001] The present invention relates to a non-flammable cleaning composition, and in particular to a non-flammable cleaning composition used for flux cleaning of printed boards, electronic parts, etc., and degreasing of electronic parts and structural parts. Background technique [0002] When flux residues are attached to printed circuit boards and electronic components used in electronic equipment that emphasizes reliability, after a long period of time, the flux residues will absorb moisture, or impurities, dust, etc. will adhere to the flux residues, which will not only cause Deterioration of the insulation, and also lead to adverse effects such as corrosion products. Therefore, these printed circuit boards and electronic components are washed after solder dipping. [0003] In addition, if the parts used for precision instruments are left in the process of production, such as cutting oil adhering to the cutting process, lubricants adhering to the plastic ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11D7/50B08B3/08C11D7/24C11D7/26C11D7/30C23G5/028
CPCB23K35/262C11D7/244C23G5/02858B23K2201/42C11D7/28B23K1/206B23K1/0016C11D7/5027B23K1/018B23K1/08C11D11/0047B23K2101/42
Inventor 村冈真一佐藤勇
Owner SENJU METAL IND CO LTD
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