Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for dyeing pearl using nano carbon combined with reactive dye

A dyeing method and nano-carbon technology, applied in jewelry, clothing, applications, etc., can solve the problem of no pearls being dyed black, and achieve the effect of high fixation rate, easy process and simple operation.

Active Publication Date: 2009-04-22
SOUTH CHINA SEA INST OF OCEANOLOGY - CHINESE ACAD OF SCI
View PDF1 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no better way to dye pearls into black at present.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Raw pearls are perforated and sorted by color, flaws, luster, nacre thickness and size. Select 100g of the lighter original beads, wash them, put them in 1000g of 100% acetone, take them out after soaking at room temperature for 3 days, wash them with distilled water and dry them. The dried pearls were scoured at 95°C for 20 minutes in 1L neutral soap solution with a concentration of 2g / L, and then washed with 100% acetone for 30 minutes.

[0026] Mix 0.3mL of polyethylene glycol dimethyl ether with a mass fraction of 0.3% and 5mL of hydrogen peroxide with a mass fraction of 5% to prepare 100mL of bleaching solution with pH=7, and bleach the scoured pearls in the bleaching solution at 23°C. Change the bleach solution every 3 days, and get bleached pearls after changing 3 times.

[0027] Mix 2g of nano-carbon with a particle size of 10-100nm and 3g of β-sulfuric acid ester vinyl sulfone and make a slurry with warm water, then dissolve it in hot water and dilute it into ...

Embodiment 2

[0030] Raw pearls are perforated and sorted by color, flaws, luster, nacre thickness and size. Select 100 g of lighter colored beads, wash them, put them in 1500 g of 100% acetone solution, soak them at room temperature for 2 days, take them out, wash them with distilled water and dry them. The dried pearls were scoured at 90°C for 25 minutes in 1.5L neutral soap solution with a concentration of 1g / L, and then washed with 100% acetone for 35 minutes.

[0031] Mix 0.2mL of 0.2% polyethylene glycol dimethyl ether and 6mL of 6% hydrogen peroxide to prepare 100mL of bleaching solution with pH = 8, put the scoured pearls in the bleaching solution at 25°C For bleaching, change the bleach solution every 3 days, and get bleached pearls after changing 2 times.

[0032] Mix 2.5g of nano-carbon with a particle size below 10-100nm and 3.5g of β-sulfate vinyl sulfone and make a slurry with warm water, then dissolve it in hot water and dilute it into 1.5L dyeing liquor, add 0.05g of soda a...

Embodiment 3

[0036] Raw pearls are perforated and sorted by color, flaws, luster, nacre thickness and size. Select 100 g of lighter original beads, wash them, put them into 1000 g of 100% acetone solution, soak them at room temperature for 5 days, take them out, wash them with distilled water and dry them. The dried pearls were boiled at 95°C for 15 minutes in 1L neutral soap solution with a concentration of 2g / L, and then washed with 100% acetone for 25 minutes.

[0037] Mix 0.1mL of polyethylene glycol dimethyl ether with a mass fraction of 0.1% and 4mL of hydrogen peroxide with a mass fraction of 4% to prepare 100mL of bleaching solution with pH=8, and bleach the scoured pearls in the bleaching solution at 21°C , change the bleach solution every 3 days, and get bleached pearls after changing 4 times.

[0038] Mix 1.5g of nano-carbon with a particle size below 10-100nm and 2g of β-sulfuric acid ester vinyl sulfone and make a slurry with warm water, then dissolve it in hot water and dilu...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a pearl coloration method with the combination of nano-carbon and a reactive dye. The pearl coloration method is characterized in that scoured and bleached pearls are dyed into black color in dye solution containing the nano-carbon with a concentration of between 1.5 and 2.5g / L and beta-sulfuric acid ester vinyl sulfone with a concentration of between 2 and 3.5g / L under the vacuum degree (absolute pressure) of between 10 and 30kPa, the granularity of the nano-carbon and the beta-sulfuric acid ester vinyl sulfone is between 10 and 100nm, and then glittering, translucent, beautiful and bright black pearls are obtained through steps such as color fixation, soap boiling, dehydration and so on. The dyeing rate of the pearls obtained by the technology is more than 95 percent, and the steady color fixation rate of the coloration within 2 years is more than 85 percent. The pearl coloration method has simple operation and easy process control, and the dyed pearls have reliable quality and are safe to human bodies.

Description

technical field [0001] The invention relates to a method for dyeing pearls, in particular to a method for combining nanometer carbon and reactive dyes to dye pearls to obtain black pearls. Background technique [0002] Pearl is a biomineralized substance secreted by the mantle cells of the mollusk phyllobranch class Pearl oyster family Pearl oyster. When pearls are cultivated and grown in pearl oysters, natural impurities such as polysaccharides, fats, and nitrogen-containing substances are carried, which makes the surface of pearls yellow and poor in permeability. Moreover, due to the existence of blemishes, the appearance quality of pearls is greatly affected. [0003] General pearl dyeing method, as directly allowing dyestuff to infiltrate pearl pore under the effect of penetrant or dispersant, then the dyed pearl that obtains is easy to fade, and Chinese patent CN1853522 discloses a kind of method that obtains colored pearl with copper sulfate treatment pearl in additio...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): A44C27/00
Inventor 张偲肖志会尹浩龙丽娟李庆欣田新朋陈永福尹团陈书勤张士忠李传荣
Owner SOUTH CHINA SEA INST OF OCEANOLOGY - CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com