Bleach or detergent composition
A technology of composition and detergent, applied in the field of bleaching catalysts, can solve the problems of easily damaged cotton fabrics and high cost
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example 1
[0132] To a beaker with 1 L of hard water (250 mg Ca / L) was added standard detergent GB / T13174-2008 (2.0 g) at 40°C and the mixture was stirred at a temperature of 40°C for 3 minutes. The amine compound (10 mg) and sodium percarbonate (800 mg) were continuously added at a temperature of 40°C. Finally, the soiled fabric was added and stirred for 30 minutes (200 rpm) at a temperature of 40°C. After bleaching, the bleached fabric pieces were washed three times in tap water at ambient temperature, squeezed and allowed to dry naturally.
[0133] Bleaching performance was evaluated by CIELAB Color i7 spectrophotometer. The color difference (ΔE) before and after bleaching was calculated as follows:
[0134]
[0135] The results for different stained fabrics and amine catalysts are listed in Table 1.
[0136] Table 1
[0137]
[0138] Tea Stained Fabric Reference: CFT B.V.C-H028 Standard Material Tea - Circular Stains on Woven Cotton
[0139]Coffee stain reference: CFT ...
example 2
[0143] Into a beaker with 1 L of hard water (250 mg Ca / L) was optionally added 2.0 g of standard detergent GB / T13174-2008 at 40°C, and the mixture was stirred at a temperature of 40°C for 3 minutes. The amine compound (10 mg) and sodium percarbonate (800 mg) were continuously added at a temperature of 40°C. Finally, the soiled fabric was added and stirred for 30 minutes (200 rpm) at a temperature of 40°C. After bleaching, the bleached fabric pieces were washed three times in tap water at ambient temperature, squeezed and allowed to dry naturally.
[0144] The results for different stained fabrics and amine catalysts are listed in Table 1.
[0145] Table 2
[0146]
[0147] The compositions of the present invention appear to allow higher bleaching performance on fabrics without detergents compared to bleaches alone.
example 3
[0149] Procedure for preparing homemade tea and coffee stained fabrics
[0150] Tea and coffee stain solutions were prepared as follows: 100 g of green tea was placed in a bottle containing 1 L of hot water for 30 minutes, then the solution was filtered and mixed with 0.5 L of black coffee solution.
[0151] Homemade tea and coffee stained fabric: Soak standard white woven cotton fabric (JB-00, GB13174-2008) in the stain solution for 5 minutes, then squeeze and dry naturally.
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