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

Method for preparing composite titanium dioxide powder with titanium-coated light calcium carbonate

A technology of light calcium carbonate and composite titanium dioxide, applied in chemical instruments and methods, dyeing polymer organic compound treatment, inorganic pigment treatment, etc., can solve the problems of weak bonding between particles, poor pigment performance and weather resistance, etc. Achieve strong weather resistance, enhanced lipophilicity, and high surface gloss

Active Publication Date: 2016-07-20
中钛集团焦作市裕盛钛业有限公司
View PDF14 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the combination between the particles in this method is not firm, and the product is not surface treated, so that the pigment performance and weather resistance of the product prepared by this method are not high.

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for preparing composite titanium dioxide powder with titanium-coated light calcium carbonate
  • Method for preparing composite titanium dioxide powder with titanium-coated light calcium carbonate
  • Method for preparing composite titanium dioxide powder with titanium-coated light calcium carbonate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] 1. Dissolve 340 g of butyl titanate in n-butanol solvent to prepare a butyl titanate solution with a concentration of 0.80 mol / L.

[0057] 2. Add 340 g of light calcium carbonate with a particle size of 0.1 μm to it, stir and disperse into a suspension.

[0058] 3. Add 156 mL of deionized water to it at a uniform speed within 40 minutes to hydrolyze the butyl titanate.

[0059] 4. After aging for 20 minutes, pass nitrogen gas for 4 minutes, add 20.4 g of methyl methacrylate, and stir for 10 minutes.

[0060] 5. Heat the system to 76°C at a heating rate of 4°C / min, add a small amount of BPO, and react for 50 minutes.

[0061] 6. After the reaction, cool down naturally, filter the slurry with a Buchner funnel, wash the filter cake with deionized water for 3 times, dry, and pulverize to obtain a composite titanium dioxide product.

[0062] 7. Carry out pigment performance testing, weather resistance testing and dispersion stability testing in the organic phase of the pro...

Embodiment 2

[0064] 1. Dissolve 340 g of butyl titanate in isobutanol solvent to prepare a butyl titanate solution with a concentration of 0.60 mol / L.

[0065] 2. Add 510 g of light calcium carbonate with a particle size of 0.2 μm to it, and ultrasonically disperse it into a suspension.

[0066] 3. Add 143 mL of deionized water to it at a uniform speed within 35 minutes to hydrolyze the butyl titanate.

[0067] 4. After aging for 16 minutes, pass nitrogen gas for 5 minutes, add 18 g of methyl methacrylate, and stir for 8 minutes.

[0068] 5. Heat the system to 80°C at a heating rate of 5°C / min, add a small amount of ammonium persulfate, and react for 40 minutes.

[0069] 6. After the reaction, cool down naturally, filter the slurry with a Buchner funnel, wash the filter cake 5 times with deionized water, dry it, and pulverize it to obtain a composite titanium dioxide product.

[0070] 7. Carry out pigment performance testing, weather resistance testing and dispersion stability testing in...

Embodiment 3

[0072] 1. Dissolve 340 g of butyl titanate in n-butanol solvent to prepare a butyl titanate solution with a concentration of 0.55 mol / L.

[0073] 2. Add 480 g of light calcium carbonate with a particle size of 0.18 μm to it, and ultrasonically disperse it into a suspension.

[0074] 3. Add 151 mL of deionized water to it at a uniform speed within 20 minutes to hydrolyze the butyl titanate.

[0075] 4. After aging for 10 minutes, inject nitrogen gas for 3 minutes, add 13.6 g of methyl methacrylate, and stir for 5 minutes.

[0076] 5. Heat the system to 72°C at a heating rate of 6°C / min, add a small amount of ammonium persulfate, and react for 60 minutes.

[0077] 6. After the reaction, cool down naturally, filter the slurry with a Buchner funnel, and wash the filter cake 4 times with deionized water, dry, and pulverize to obtain a composite titanium dioxide product.

[0078] 7. Carry out pigment performance testing, weather resistance testing and dispersion stability testing ...

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
Particle sizeaaaaaaaaaa
Particle sizeaaaaaaaaaa
Particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention relates to a method for preparing composite titanium dioxide powder with titanium-coated light calcium carbonate. The method includes steps of a, dissolving butyl titanate in organic solvents to obtain butyl titanate solution; b, adding light calcium carbonate into the butyl titanate solution and uniformly dispersing the light calcium carbonate to obtain turbid liquid; c, adding deionized water into the turbid liquid in a stirring state at a constant speed, hydrolyzing butyl titanate and then aging the turbid liquid for 10-20 min; d, filling the turbid liquid with nitrogen, adding methyl methacrylate into the turbid liquid under the protection of the nitrogen and stirring the turbid liquid for 5-10 min; e, heating a system until the temperature of the system reaches 70-80 DEG C, adding a small quantity of initiators into the system and treating the surfaces of the system for 40-60 min; f, naturally cooling the system after the surfaces of the system are completely treated, filtering serous fluid by the aid of a Buchner funnel, cleaning filter cake by the aid of deionized water and drying and smashing the filter cake. The method for preparing the composite titanium dioxide powder has the advantages that the pigment performance of titanium dioxide powder products can be improved, and the dispersion stability and the weather fastness of the titanium dioxide powder products in organic solvents can be enhanced.

Description

technical field [0001] The invention relates to a preparation method of composite titanium dioxide, in particular to a preparation method of titanium-coated light calcium carbonate composite titanium dioxide. Background technique [0002] Titanium dioxide has stable physical and chemical properties, excellent optical and electrical properties, and excellent pigment performance. It is widely used in coatings, paper, plastics, inks, rubber, cosmetics, ceramics, electronics and other fields. Among them, pigment-grade titanium dioxide, because of its high hiding power, high finish, high whiteness and other excellent functions, soon replaced white pigments such as lead white, zinc white, and lithopone after it came out. [0003] Since the pigment performance of pigment grade titanium dioxide mainly depends on TiO 2 The surface properties of the particle, such that the inner core contributes little to the pigment properties. In order to reduce the cost of titanium dioxide prepar...

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
IPC IPC(8): C09C1/36C09C3/10
CPCC09C1/3676C09C3/006C09C3/10
Inventor 徐春长
Owner 中钛集团焦作市裕盛钛业有限公司
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