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

Aureous bead pigment having strong metallic texture and method for producing the same

A metal texture, pearlescent pigment technology, applied in inorganic pigment processing, chemical instruments and methods, fibrous fillers, etc., can solve problems such as price cannot be lowered, color saturation is not high, light golden color, etc., to achieve high color saturation , Strong metallic luster, high brightness in flat viewing angle

Active Publication Date: 2009-11-25
SHANTOU LONGHUA PEARL LUSTRE PIGMENTS CO LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the gold color of this pearlescent pigment is relatively light, and the color saturation is not high. In addition, because the pigment contains titanium oxide, the price is still high
[0006] 3. Chinese patent CN1384858 introduces the preparation of super strong golden pearlescent pigments. It adopts wet chemical method to alternately hydrolyze and deposit high refractive index layer and low refractive index oxide layer on the substrate surface. The high refractive index layer is TiO 2 and Fe 2 o 3 The mixed deposition layer, the low refractive index layer is a silicon dioxide layer, and the high refractive index layer is TiO 2 and Fe 2 o 3 There are strict ratio requirements, which must overcome the problem of determining the hydrolysis pH value caused by the mixing of these two soluble salts. In addition, because the pigment contains titanium oxide, the price cannot be reduced

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

[0028] SiO 2 / Fe 2 o 3 / SiO 2 / Fe 2 o 3 / glass sheet / Fe 2 o 3 / SiO 2 / Fe 2 o 3 / SiO 2 The structure of the example;

[0029] Take 120 grams of wet glass powder with a thickness of 1-5 microns and a particle size of 30-150 microns, suspend in 500 ml of deionized water, stir and heat to 75°C.

[0030] The pH value of the suspension was adjusted to 3.5 with 18% hydrochloric acid, and then 98 ml of ferric chloride solution (60 g / l, FeCl 3 .6H 2 O), during this process the pH value of the suspension was kept constant by adding 15% sodium hydroxide dropwise, and when the addition was complete, stirring was continued at constant temperature for 15 minutes.

[0031] The pH was raised to 9.5 with 32% sodium hydroxide solution and stirred for an additional 15 minutes.

[0032] 560 ml of sodium silicate solution (20 g / L of SiO 2 ) was added dropwise, during which 15% hydrochloric acid was added dropwise to make the pH constant, and when the addition was complete, it was st...

Embodiment 2

[0039] With structure Fe 2 o 3 / SiO 2 / Fe 2 o 3 / glass sheet / Fe 2 o 3 / SiO 2 / Fe 2 o 3 For example;

[0040] Take 480 grams of wet glass powder with a thickness of 1-5 microns and a particle size of 30-150 microns, suspend in 3000 ml of deionized water, stir and heat to 75°C.

[0041] The pH value of the suspension was adjusted to 3.5 with 18% hydrochloric acid, and then 505 milliliters of ferric chloride solution (60 g / L, FeCl 3 .6H 2 O), during this process the pH value of the suspension was kept constant by adding 15% sodium hydroxide dropwise, and when the addition was complete, stirring was continued at constant temperature for 15 minutes.

[0042] The pH was raised to 9.5 with 32% sodium hydroxide solution and stirred for an additional 15 minutes.

[0043] 1780 ml of sodium silicate solution (20 g / L of SiO 2 ) was added dropwise, during which 15% hydrochloric acid was added dropwise to make the pH constant, and when the addition was complete, it was stirred ...

Embodiment 3

[0048] With structure Fe 2 o 3 / SiO 2 / Fe 2 o 3 / Muscovite / Fe 2 o 3 / SiO 2 / Fe 2 o 3 For example;

[0049] Take 120 grams of wet muscovite powder with a particle size of 20-80 microns, suspend it in 500 ml of deionized water, stir and heat to 75°C.

[0050] The pH value of the suspension was adjusted to 3.5 with 18% hydrochloric acid, and then 620 milliliters of ferric chloride solution (60 g / L, FeCl 3 .6H 2 O), during this process the pH value of the suspension was kept constant by adding 15% sodium hydroxide dropwise, and when the addition was complete, stirring was continued at constant temperature for 15 minutes.

[0051] The pH was raised to 9.5 with 32% sodium hydroxide solution and stirred for an additional 15 minutes.

[0052] 1075 ml of sodium silicate solution (20 g / L of SiO 2 ) was added dropwise, during which 15% hydrochloric acid was added dropwise to make the pH constant, and when the addition was complete, it was stirred for another 30 minutes.

[...

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

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention provides a golden pearlescent pigment with a strong metallic texture. The pigment comprises a small flake-shaped substrate, and the surface of the small flake-shaped substrate is alternately coated with iron oxide layers and silicon oxide layers. The coating layer is at least Three layers, wherein the optical thickness of the iron oxide layer is 10-200nm, and the optical thickness of the silicon oxide layer is 10-320nm. The invention also provides a preparation method of the above-mentioned pigment. The method adopts a wet chemical hydrolysis process to sequentially deposit an iron oxide layer and a silicon oxide layer on the surface of the small sheet substrate. The golden pearlescent pigment of the invention has a strong golden interference color under the condition of not containing titanium dioxide, and the vividness and brightness of the color are far higher than that of common golden pearlescent pigments. The pigment of the invention has the advantages of low price, simple preparation and stable product quality.

Description

technical field [0001] The invention relates to a colored pigment based on a multilayer-coated platelet-shaped substrate, in particular to a golden pigment based on a multi-layer-coated platelet-shaped substrate, and also relates to a production method of the golden pigment. Background technique [0002] The golden pigments or "gold powder" used in various industries in the past are actually mostly brass alloys composed of copper, zinc and aluminum. The preparation method is: melt and atomize the brass alloy into coarse powder, put it into a wet ball mill The medium-coarse powder with a sheet-like structure is tempered to eliminate internal stress, then crushed by dry ball milling, and finally classified by winnowing, and the surface of the film is polished. This kind of golden pigment has complicated processing technology, is flammable and explosive, and in practical application, it is not resistant to acid, alkali, heat and humidity, has extremely poor weather resistance, ...

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 Patents(China)
IPC IPC(8): C09C3/06C09C1/28
Inventor 刘为忠庄育麟
Owner SHANTOU LONGHUA PEARL LUSTRE PIGMENTS CO LTD
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