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A kind of preparation method of yellowing resistant industrial grade glycerin

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

Active Publication Date: 2021-11-12
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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  • A kind of preparation method of yellowing resistant industrial grade glycerin
  • A kind of preparation method of yellowing resistant industrial grade glycerin

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 anti-yellowing industrial-grade glycerin, which comprises the following steps: Step 1, preparation of filling liquid: first add n-decane into a high-temperature reaction kettle, and then add a total amount of n-decane of 5- 11% carbonate, raise the temperature of the high-temperature reactor to 700-900°C, then add modified rice husk ash with 3-6% of the total amount of n-decane, and then proceed at a speed of 1000-1400r / min Stir at a high speed for 20-30min, then stir at a low speed of 300-400r / min for 50-60min, and the filling liquid is obtained after the stirring is completed. The raw materials used in the invention will not interfere with the paint, and the application effect of glycerin is improved. The filling liquid adopts high temperature resistant solvent n-decane as the filling medium, and the added carbonate can increase the boiling point of the 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 Patents(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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