Thixotropic agent and method for producing same

A manufacturing method and technology of thixotropic agents, applied in chemical instruments and methods, pharmaceutical formulations, cosmetic preparations, etc., can solve the problems of reduced thickening performance, appearance of water separation, and reduced effect of thixotropic agents to achieve good thixotropy , Improve the effect of thixotropy

Inactive Publication Date: 2014-01-29
YAMAGUCHI MICA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The above-mentioned carboxyvinyl polymer exhibits a thickening action due to the dissociation of carboxyl groups in the solution, and thus has the disadvantage that the effect as a thixotropic agent is significantly reduced in an acidic pH range or a low temperature range where carboxyl groups are not sufficiently dissociated.
In addition, depending on the product, although there are products with a high concentration of organic solvents such as ethanol, they cannot be sufficiently thickened by cross-linking polymerization-based synthetic polymers such as carboxyvinyl polymers.
When a large amount of carboxyvinyl polymer is compounded to compensate for the decrease in thickening performance, problems such as the occurrence of water separation due to curing or gel shrinkage will occur.

Method used

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  • Thixotropic agent and method for producing same
  • Thixotropic agent and method for producing same
  • Thixotropic agent and method for producing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0089] To 200 ml of tap water put into a 500 ml beaker, a peptizer obtained by dissolving 0.5 g of tetrasodium pyrophosphate in 10 g of tap water, and 10.0 g of synthetic hectorite (trade name: Laponite RD, manufactured by Rockwood Additives Co. Ltd.) were sequentially added. ) to prepare the mixture. Stir the mixed solution through a laboratory disperser at room temperature for 2 hours to fully hydrate the synthetic hectorite. After confirming that the pH of the mixed solution is 10.5, ethylenediamine hydroxyethyltriacetate sodium dihydrate (HEDTA?3Na?2H 2 O) and the prepared 10g complexing agent was added dropwise in 30 minutes at normal temperature to carry out intercalation. And after adding the complexing agent dropwise, it was stirred for 1 hour by a laboratory disperser at room temperature, and left at room temperature for a day and night, thereby obtaining the thixotropic agent of Example 1.

Embodiment 2

[0091] To 200 ml of pure water put into a 500 ml beaker, a peptizer obtained by dissolving 0.25 g of tetrapotassium pyrophosphate in 10 g of pure water, and 7.5 g of synthetic hectorite (trade name: Laponite S482, Rockwood Additives Co. Ltd), to prepare a mixed solution. Stir the mixed solution through a laboratory disperser at room temperature for 2 hours to fully hydrate the synthetic hectorite. After adding 2N sodium hydroxide solution to the mixture to adjust the pH to 11.5, ethylenediaminetetraacetic acid tetrasodium dihydrate (EDTA?4Na?4H 2 O) and the prepared 10g complexing agent was added dropwise in 30 minutes at normal temperature to carry out intercalation. Also, after the complexing agent was added dropwise, the pH was adjusted to 10.0 using citric acid. Then, it was stirred by a laboratory disperser at room temperature for 1 hour, and left at room temperature for a day and night, thereby obtaining the thixotropic agent of Example 2.

Embodiment 3

[0093] To 200 ml of tap water put in a 500 ml beaker, a peptizer obtained by dissolving 0.5 g of tetrasodium pyrophosphate in 10 g of tap water, and 4.0 g of synthetic hectorite (trade name: Laponite RD, manufactured by Rockwood Additives Co. Ltd.) were sequentially added , and 4.5 g of synthetic hectorite (trade name: Lusentient SWF, manufactured by Corp Chemical Corporation) to prepare a mixed solution. Stir the mixed solution through a laboratory disperser at room temperature for 2 hours to fully hydrate the synthetic hectorite and smectite. After adjusting the pH of the mixture to 9.5 with citric acid, ethylenediamine hydroxyethyltriacetic acid trisodium trihydrate (NTA?3Na?H 2 O) and the prepared 10g complexing agent was added dropwise in 30 minutes at normal temperature to carry out intercalation. And after adding the complexing agent dropwise, it was stirred for 1 hour at room temperature by a laboratory disperser, and left at room temperature for a day and night, ther...

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Abstract

[Problem] To provide a thixotropic agent having excellent thixotropic properties. [Solution] A thixotropic agent contains a clay mineral compound formed from a phyllosilicate mineral having between layers at least one of an alkali metal ion and alkaline earth metal ion as the interlayer metal ion. A metal complex compound obtaining by bonding an aminopolycarboxylate or a derivative of the aminopolycarboxylate to the interlayer metal ion is, as the active species, introduced between the layers of the phyllosilicate mineral to produce the clay mineral compound.

Description

technical field [0001] The invention relates to a thixotropic agent containing a clay mineral compound and a manufacturing method thereof. Background technique [0002] Conventionally, thixotropic agents have been added to products such as cosmetics and paints for the purpose of stabilizing products such as preventing solute sedimentation and adjusting viscosity. As such thixotropic agents, various polysaccharides, natural polymers such as gelatin, cellulose ethers, sodium polyacrylate, synthetic polymers such as carboxyvinyl polymers, and the like are known. Among them, carboxyvinyl polymers are used in many fields because they are inexpensive, have a high thickening effect, and are gelled with a small amount (for example, refer to Patent Document 1). [0003] The above-mentioned carboxyvinyl polymer exhibits a thickening action due to the dissociation of carboxyl groups in the solution, and thus has the disadvantage that the effect as a thixotropic agent is significantly ...

Claims

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Application Information

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IPC IPC(8): C09K3/00A61K8/25C09D7/45
CPCA61K8/00C01B33/44A61K8/25A61K8/26A61K2800/56A61Q1/02C09K3/00
Inventor 吉满英二
Owner YAMAGUCHI MICA
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