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A method for optimizing the color of seawater pearls

A pearl and seawater technology, applied in jewelry, clothing, applications, etc., can solve problems such as unreasonable processing technology, dull pearls, poor color stability, etc., and achieve good dyeing effect, improved dyeing effect, and stable dyeing effect

Active Publication Date: 2015-08-12
GUANGZHOU QIFU PEARL PROCESSING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, my country's pearl color optimization technology is backward, the treatment process is unreasonable, the treatment time is too long, and the effect is not obvious
Domestic dyed pearls also have problems such as poor color stability. After wearing for a certain period of time, the color will fade and the pearls will become dull.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1 For seawater pearls after chemical bleaching, according to the method of the present invention, the following process is adopted to optimize its color.

[0024] 1. The chemical reagents used in the examples are of analytical grade.

[0025] 2. Production conditions: in the pearl processing workshop, the temperature is 40°C, and the pH value of the dyeing solution is controlled at pH 7.5 with triethanolamine.

[0026] 3. Specific process steps:

[0027] (1) Pretreatment: Soak seawater pearls in a flask containing an aqueous solution of Tween-20 containing 5% by mass fraction, so that the liquid level in the flask is 1 cm higher than the plane where the seawater pearls are, take them out after soaking for 3 hours, and obtain Pretreated seawater pearls;

[0028] (2) Preparation of dyeing solution: add 8 g of reactive red BF-GLN150% dye and 1 mL of Tween-60 into 1000 ml of methanol, stir evenly to obtain the dyeing solution, and set aside;

[0029] (3) Soaking ...

Embodiment 2

[0033] Example 2 For seawater pearls after chemical bleaching, according to the method of the present invention, the following process is adopted to optimize its color.

[0034] 1. The chemical reagents used in the examples are of analytical grade.

[0035] 2. Production conditions: in the pearl processing workshop, the temperature is 50°C, and the pH value of the dyeing solution is controlled at pH 8.5 with triethanolamine.

[0036] 3. Specific process steps:

[0037] (1) Pretreatment: Soak seawater pearls in a flask containing an aqueous solution of Tween-20 containing 5% by mass fraction, so that the liquid level in the flask is 2 cm higher than the plane where the seawater pearls are located, take them out after soaking for 4 hours, and obtain Pretreated seawater pearls;

[0038] (2) Preparation of dyeing solution: add 10 g of reactive red BF-GLN150% dye and 1 mL of Tween-60 into 1000 ml of methanol, stir evenly to obtain the dyeing solution, and set aside;

[0039] (3)...

Embodiment 3

[0043]Example 3 For seawater pearls after chemical bleaching, according to the method of the present invention, the following process is adopted to optimize its color.

[0044] 1. The chemical reagents used in the examples are of analytical grade.

[0045] 2. Production conditions: in the pearl processing workshop, the temperature is 45°C, and the pH value of the dyeing solution is controlled at pH 8.0 with triethanolamine.

[0046] 3. Specific process steps:

[0047] (1) Pretreatment: Soak the seawater pearls in a flask filled with an aqueous solution of Tween-20 containing 5% by mass fraction, so that the liquid level in the flask is 1 cm higher than the plane where the seawater pearls are, take them out after soaking for 3.5 hours, Obtain pretreated seawater pearls;

[0048] (2) Preparation of dyeing solution: add 9 g of reactive red BF-GLN150% dye and 1 mL of Tween-60 into 1000 ml of methanol, stir evenly to obtain the dyeing solution, and set aside;

[0049] (3) Soakin...

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PUM

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Abstract

The invention relates to a method for optimizing seawater pearl color and belongs to the technical field of pearl color processing. The method comprises the following steps: pretreating seawater pearl by using an aqueous solution containing 5 percent of Tween 20, soaking and dyeing the pretreated seawater pearl in the prepared dyeing solution at the temperature of 40-50 DEG C under the condition of the pH value of the dyeing solution of 7.5-8.5, cleaning the dyed seawater pearl until no foam is generated by using running water, deionized water and an ultrasonoscope after dyeing is completed, drying the seawater pearl in an air dry oven at the temperature of 40-50 DEG C, sampling, observing, repeatedly soaking, dyeing, cleaning and drying according to the production requirements until the required color effect is achieved. According to the method, after the seawater pearl is treated, the irisation, brightness and fullness of the seawater pearl are obviously improved, one of the key technical problems which bring trouble to the pearl industry in China for a long time can be solved; moreover, the method is simple in process and flow operation and has high application value and economic value and good market prospect.

Description

technical field [0001] The invention relates to a method for optimizing the color of seawater pearls, belonging to the technical field of pearl color processing. Background technique [0002] Seawater pearl is a precious organic gemstone, seawater pearl is made of CaCO 3 Aragonite or calcite crystals and organic matter (mainly shell keratin) are deposited alternately. Organic matter is mainly located between the bead nucleus and the nacre and in the crystal layer of the nacre. The quality of seawater pearls depends on color, luster, size, surface smoothness and shape, among which color and luster are the two most important factors. [0003] The color of seawater pearls in my country is relatively single, mainly light yellow and silvery white. Due to the influence of factors such as the place of origin and the time of pearl cultivation, defects such as color and luster are often produced. Most seawater pearls cannot be directly used to make jewelry, and need to be process...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A44C27/00
Inventor 尹团童银洪
Owner GUANGZHOU QIFU PEARL PROCESSING
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