Preparation method of yellowing-resistant industrial-grade glycerol

An industrial-grade, anti-yellowing technology, applied in coatings and other directions, can solve problems such as limiting application effects and color interference, and achieve the effects of improving UV shielding, preventing yellowing, and improving anti-yellowing effects

Active Publication Date: 2020-03-20
安徽诚宁油脂科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The additives include any of the following raw materials or combinations: nano-titanium dioxide, hexamethylphosphoric acid triamide, bis(stearyl)yl thiodipropionate, and water. Sodium hypochlorite has a bleaching effect, and its application in the paint will also interfere with the color of the paint itself, limiting its application effect

Method used

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  • Preparation method of yellowing-resistant industrial-grade glycerol
  • Preparation method of yellowing-resistant industrial-grade glycerol

Examples

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Effect test

Embodiment 1

[0024] A kind of preparation method of anti-yellowing technical grade glycerin of the present embodiment, comprises the following steps:

[0025] Step 1, preparation of filling liquid: first add n-decane to the high-temperature reactor, then add carbonate with 5% of the total amount of n-decane, raise the temperature of the high-temperature reactor to 700°C, and then add n-decane The modified rice husk ash with 3% total amount of decane was first stirred at a high speed at a speed of 1000r / min for 20min, and then stirred at a low speed at a speed of 300r / min for 50min, and the filling liquid was obtained after the stirring was completed;

[0026] Step 2, preparation of high temperature self-wetting agent: Cr 2 o 3 The powder is first added to the melting furnace for smelting treatment until it is completely melted, then Ni powder, Al powder and lanthanum nitrate are added in sequence, and the smelting is continued for 10 minutes. Self-wetting agent;

[0027] Step 3, weighin...

Embodiment 2

[0037] A kind of preparation method of anti-yellowing technical grade glycerin of the present embodiment, comprises the following steps:

[0038] Step 1, preparation of filling liquid: first add n-decane to the high-temperature reactor, then add carbonate with 11% of the total amount of n-decane, raise the temperature of the high-temperature reactor to 900°C, and then add n-decane The modified rice husk ash with 6% total amount of decane was first stirred at a high speed of 1400r / min for 30min, and then stirred at a low speed of 400r / min for 60min, and the filling liquid was obtained after the stirring was completed;

[0039] Step 2, preparation of high temperature self-wetting agent: Cr 2 o 3 The powder is first added to the melting furnace for smelting treatment, and smelted until it is completely melted, then Ni powder, Al powder and lanthanum nitrate are added in sequence, and the smelting is continued for 20 minutes. Self-wetting agent;

[0040]Step 3, weighing of raw ...

Embodiment 3

[0051] A kind of preparation method of anti-yellowing technical grade glycerin of the present embodiment, comprises the following steps:

[0052] Step 1, preparation of filling liquid: first add n-decane to the high-temperature reactor, then add carbonate with 8% of the total amount of n-decane, raise the temperature of the high-temperature reactor to 800°C, and then add n-decane The modified rice husk ash with 4.5% total amount of decane is first stirred at a high speed at a speed of 1200r / min for 25 minutes, and then stirred at a low speed of 350r / min for 55 minutes. After the stirring is completed, a filling liquid is obtained;

[0053] Step 2, preparation of high temperature self-wetting agent: Cr 2 o 3 The powder is first added to the melting furnace for smelting treatment, and smelted until it is completely melted, then Ni powder, Al powder and lanthanum nitrate are added in sequence, and the smelting is continued for 15 minutes. Self-wetting agent;

[0054] Step 3, w...

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Abstract

The invention discloses a preparation method of yellowing-resistant industrial-grade glycerol. The method comprises a first step of preparing filling liquid, i.e., adding n-decane into a high-temperature reaction kettle, then adding carbonate accounting for 5-11% of the total amount of n-decane, raising the temperature of the high-temperature reaction kettle to 700 to 900 DEG C, then adding modified rice hull ash accounting for 3-6% of the total amount of n-decane, carrying out stirring at a high speed of 1000-1400 r / min for 20-30 min, then carrying out stirring at a low speed of 300-400 r / minfor 50-60 min, and finishing stirring to obtain the filling liquid. The adopted raw materials do not interfere with a coating, so the application effect of the glycerol is improved; the filling liquid adopts a high-temperature-resistant solvent, namely n-decane as a filling medium; and the added carbonate can improve the boiling point of a solvent.

Description

technical field [0001] The invention relates to the technical field of glycerin production, in particular to a preparation method of anti-yellowing industrial grade glycerin. Background technique [0002] Glycerin is a colorless, sweet, clear, viscous liquid that is odorless and has a warm sweet taste. It can absorb moisture from the air, as well as hydrogen sulfide, hydrogen cyanide and sulfur dioxide. Insoluble in benzene, chloroform, carbon tetrachloride, carbon disulfide, petroleum ether and oils. The relative density is 1.26362. The melting point is 17.8°C. The boiling point is 290.0°C and the refractive index is 1.4746. Since the boiling point of glycerin is as high as 290°C, it can be used to prepare various resins in the coating industry, but glycerin is prone to yellowing at high temperatures, which affects the product quality of the coating. [0003] The existing Chinese patent literature publication number CN106833317B discloses a high-temperature yellowing-re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D7/63C09D7/61C09D7/65
CPCC08K3/26C08K3/34C08K3/40C08K5/053C08K7/24C08K13/04C08K2003/2241C08K2201/005C08K2201/006C08K2201/011C09D7/61C09D7/63C09D7/65C09D7/70
Inventor 倪震曾炜伍海辉
Owner 安徽诚宁油脂科技有限公司
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