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Carbopol and preparation method thereof

An acrylic monomer and solvent technology, applied in the direction of adhesive types, adhesive additives, acid copolymer adhesives, etc., can solve the problem of low monomer conversion rate, high carbomer viscosity, deep carbomer hue, etc. problem, to achieve the effect of preventing and controlling high acid value, improving fat solubility, and increasing activation energy

Inactive Publication Date: 2017-05-10
贵州省欣紫鸿药用辅料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] But at present, there is still a gap between the performance of my country's carbomer products and foreign products, and its synthesis process also has defects, such as high or low carbomer viscosity, strong odor, low monomer conversion rate and other undesirable phenomena; Carbomer has a darker hue, whitish appearance, milky appearance, poor fluidity and other abnormal phenomena. At the same time, because acrylic acid monomers have high activity and contain unsaturated double bonds, the monomers used in the synthesis process have been polymerized. As a result, poor product performance or low conversion rates etc.

Method used

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  • Carbopol and preparation method thereof
  • Carbopol and preparation method thereof

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Experimental program
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Embodiment 1

[0032] The present embodiment provides a kind of preparation method of carbomer, comprises the following steps:

[0033] (1) Mix tert-butanol, sorbitol, activated carbon, and purified water evenly, add them to the reaction kettle, and stir the reaction kettle until the temperature is 65°C;

[0034] (2) After mixing the cross-linking agent and antioxidant evenly, a solution A is obtained; put the acrylic acid monomer in an alkalized microwave kettle for treatment for 5 minutes, and the microwave power is 350W; there are two high-level tanks above the reaction kettle, add acrylic acid respectively Monomer and solution A; add acrylic acid monomer and solution A dropwise to the reaction kettle, control the amount of addition so that the acrylic acid monomer and solution A are added dropwise at the same time, and the time for dropping is 4.8h;

[0035] (3) After the dropwise addition, control the temperature of the reaction kettle to rise to 90°C, and under the condition of filling...

Embodiment 2

[0040] The present embodiment provides a kind of preparation method of carbomer, comprises the following steps:

[0041] (1) Mix tert-butanol, sorbitol, activated carbon, and purified water evenly, add them to the reaction kettle, and stir the reaction kettle until the temperature is 70°C;

[0042] (2) After mixing the cross-linking agent and antioxidant evenly, a solution A is obtained; the acrylic acid monomer is put into an alkalized microwave kettle for 8 minutes, and the microwave power is 450W; there are two high-level tanks above the reaction kettle, and acrylic acid is added respectively Monomer and solution A; dropwise add acrylic acid monomer and solution A to the reaction kettle, control the amount of addition so that the addition of acrylic acid monomer and solution A is completed at the same time, and the time for dropping is 5.5h;

[0043] (3) After the dropwise addition, control the temperature of the reactor to rise to 90°C, and fill it with nitrogen to maintai...

Embodiment 3

[0048] The present embodiment provides a kind of preparation method of carbomer, comprises the following steps:

[0049] (1) Mix tert-butanol, sorbitol, activated carbon, and purified water evenly, add them to the reaction kettle, and stir the reaction kettle until the temperature is 68°C;

[0050] (2) After mixing the cross-linking agent and antioxidant evenly, a solution A is obtained; the acrylic acid monomer is put into an alkalized microwave kettle for 6 minutes, and the microwave power is 400W; there are two high-level tanks above the reaction kettle, and acrylic acid is added respectively Monomer and solution A; add acrylic acid monomer and solution A dropwise to the reaction kettle, control the amount of addition so that the acrylic acid monomer and solution A are added dropwise at the same time, and the time for dropping is 5h;

[0051] (3) After the dropwise addition, control the temperature of the reaction kettle to rise to 90°C, and fill it with nitrogen to maintai...

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Abstract

The invention relates to the technical field of resin materials, in particular to carbopol and a preparation method thereof. The carbopol is prepared by taking acrylic acid as a monomer and matching with an initiating agent, a corss-linking agent, an assistant, purified water, a solvent and activated carbon, wherein the solvent is prepared from tertiary butanol and sorbitol; the assistant is prepared from an antioxidant and a chain modifier. According to the preparation method disclosed by the invention, abnormal phenomena of wall sticking and instable acid values are effectively prevented; by utilizing the preparation method disclosed by the invention, the yield and the light transmittance of a product are better, the thickening effect is good, the odor is low, and the product also has good mechanical performance.

Description

technical field [0001] The invention relates to the technical field of resin materials, in particular to a carbomer and a preparation method thereof. Background technique [0002] Carbomer is a homopolymer or heteropolymer of acrylic acid. It is a white loose powder with excellent thickening, suspending and emulsifying effects. It has good compatibility with other excipients and has a wide range of applications. It is mostly used as Adhesives for laminated products, chelating agents, pharmaceutical excipients and nutritional additives, etc., especially in the fields of cosmetics and medicine, have broad application prospects. [0003] At present, commercially available carbomer products are becoming more and more popular, but there are many research documents on the performance and application of carbomer at home and abroad, and its synthesis technology has also achieved preliminary exploration results in recent years. [0004] For example, the patent document No. 201410010...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/06C08F224/00C08F220/28C08F2/44C08F2/38C08F4/38C08K7/24C09J133/02C09J11/04
CPCC08F2/38C08F2/44C08F4/38C08F220/06C08K7/24C09J11/04C09J133/02C08F224/00C08F220/282
Inventor 沈惠洪怡母逸青
Owner 贵州省欣紫鸿药用辅料有限公司
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