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Low-temperature cashmere bleaching agent and bleaching method thereof

A bleaching agent and cashmere technology, applied in the field of fiber bleaching, can solve the problems of high cost, large fiber damage, easy yellowing of cashmere fibers, etc., and achieve the effects of reducing damage, reducing yellowing and complete bleaching

Inactive Publication Date: 2014-09-17
严海黄
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cost of bleaching agent and bleaching process in the prior art is high, the damage to the fiber is relatively large, and the cashmere fiber after bleaching is easy to yellow

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Soak the cashmere in clean water with a bath ratio of 1:50, then add 2g / L of sodium alkylsulfonate and 2g / L of detergent LS to obtain a treatment solution, adjust the pH value of the treatment solution to 7-7.5, and then Raise the temperature to 55°C at a rate of 1°C / min, keep it for 10 minutes, and then wash it with lower temperature water three times, including one wash with warm water at 45°C and two washes with cold water at a bath ratio of 1:45, and squeeze dry.

[0022] The cashmere fiber is pretreated in a metal salt solution, the bath ratio is 1:30, the temperature is 75°C, and the time is 25 minutes. The metal salt includes 10% ferrous sulfate, 2% sodium bisulfite, and 1% fatty acid methyl ester ethyl Oxide sulfonates;

[0023] Wash the cashmere fibers pretreated with metal salts three times, including one wash with warm water at 45°C and two washes with cold water at a bath ratio of 1:45, and squeeze dry;

[0024] The squeezed cashmere fiber is added to the o...

Embodiment 2

[0030] Soak the cashmere in clean water with a bath ratio of 1:50, then add 5g / L of sodium alkylsulfonate and 0.1g / L of detergent LS to obtain a treatment solution, and adjust the pH value of the treatment solution to 7-7.5. Then raise the temperature to 65°C at a rate of 1°C / min, keep it for 10 minutes, and then wash it three times with cooling water, including one wash with warm water at 45°C and two washes with cold water, with a bath ratio of 1:45 respectively, and squeeze dry.

[0031] The cashmere fiber is pretreated in a metal salt solution, the bath ratio is 1:30, the temperature is 75°C, and the time is 25 minutes. The metal salt includes 10% ferrous sulfate and 2% sodium bisulfite;

[0032] Wash the cashmere fibers pretreated with metal salts three times, including one wash with warm water at 45°C and two washes with cold water at a bath ratio of 1:45, and squeeze dry;

[0033] The squeezed cashmere fiber is added to the oxidation bleaching solution for bleaching, th...

Embodiment 3

[0039] Soak the cashmere in clean water with a bath ratio of 1:50, then add 3 g / L of sodium alkylsulfonate and 1 g / L of cleaning agent LS to obtain a treatment solution, adjust the pH value of the treatment solution to 7-7.5, and then Raise the temperature to 55-65°C at a rate of 2°C / min, keep it for 10 minutes, and then wash it three times with lower temperature water, including one wash with warm water at 45°C and two washes with cold water at a bath ratio of 1:45, and squeeze dry.

[0040] The cashmere fiber is pretreated in a metal salt solution, the bath ratio is 1:30, the temperature is 75°C, and the time is 25 minutes. The metal salt includes 10% ferrous sulfate, 2% sodium bisulfite, and 1% fatty acid methyl ester ethyl Oxide sulfonates;

[0041] Wash the cashmere fibers pretreated with metal salts three times, including one wash with warm water at 45°C and two washes with cold water at a bath ratio of 1:45, and squeeze dry;

[0042] The squeezed cashmere fiber is adde...

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Abstract

The invention relates to a method for bleaching through a low-temperature cashmere bleaching agent. A metal salt solution contains 1% fatty acid methyl ester ethoxylate sulfonate, and an oxidation bleaching solution comprises 15g / L of 30% hydrogen peroxide, 8g / L of tetraacetylenediamine, 3g / L of glucose, 2.5 / L of trisodium phosphate, and 0.5g / L of ethylene glycol monobutyl ether; a reduction bleaching solution comprises 3g / L of thiourea dioxide, 1g / L of iso-tridecanol polyoxyethylene ether, 1g / L of glucose, 2g / L of sodium silicate, and 1g / L of sodium sulfide. By adopting the low-temperature cashmere bleaching agent and the bleaching method thereof, the whiteness of cashmere can be effectively improved, the damage on the cashmere can be alleviated, and the yellowing index of the bleached cashmere is low.

Description

[0001] technical field [0002] The invention relates to the technical field of fiber bleaching, in particular to a cashmere low-temperature bleaching agent and a bleaching method. Background technique [0003] Cashmere is a precious textile raw material. Natural cashmere comes in various colors such as white, blue, purple, and brown, among which the most precious is white, so cashmere needs to be bleached. However, the cost of the bleaching agent and bleaching process in the prior art is high, the damage to the fiber is relatively large, and the cashmere fiber after bleaching is easy to yellow. Therefore, seeking the bleaching agent and bleaching method under low temperature to reduce the damage to fiber has just become the current important subject. Contents of the invention [0004] In order to reduce cashmere damage and improve fiber whiteness, the invention provides a cashmere low-temperature bleaching agent, which includes: 30% hydrogen peroxide, tetraacetylethylene...

Claims

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Application Information

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IPC IPC(8): D06L3/02D06L3/10D06L3/00D06L3/16D06M13/262D06M11/54D06M11/56D06M101/12D06L4/12D06L4/13
Inventor 耿云花
Owner 严海黄
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