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Antibacterial agent for shampoo and preparation method thereof

An antibacterial agent and shampoo technology, applied in the field of shampoo preparation, can solve the problems of bacteria breeding on the scalp, prone to dandruff, and itchy scalp.

Inactive Publication Date: 2020-12-15
付正谋
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The antibacterial effect of the existing antibacterial agents is average. After the user uses the shampoo, the scalp will still breed bacteria, causing itchy scalp symptoms, and prone to dandruff, which affects the user experience

Method used

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  • Antibacterial agent for shampoo and preparation method thereof
  • Antibacterial agent for shampoo and preparation method thereof
  • Antibacterial agent for shampoo and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] An antibacterial agent for shampoo, made by the following steps:

[0043] Step A1: Add chitosan to ethanol, soak for 3 hours, add sodium hydroxide solution, stir for 1 hour under the conditions of rotating speed of 200r / min and temperature of 25°C, then add chloroacetic acid, and then add chloroacetic acid at a temperature of 70 Under the condition of ℃, react for 1 h, adjust the pH value of the reaction solution to 7, add deionized water, keep warm for 5 min, add acetone, let stand for 10 min, filter and remove the filtrate, wash the filter cake with ethanol twice, every After the first washing for 1min, dry to obtain carboxymethyl chitosan;

[0044] Step A2: Add octamethylcyclotetrasiloxane and sodium hydroxide into the reaction kettle, pass nitrogen gas for protection, and react for 5 hours under the conditions of rotation speed of 100r / min and temperature of 130°C to obtain alkali glue , Add 1,3-bis(3-aminopropyl)-tetramethyldisiloxane, tetramethylcyclotetrasiloxan...

Embodiment 2

[0050] An antibacterial agent for shampoo, made by the following steps:

[0051] Step A1: Add chitosan to ethanol, soak for 4 hours, then add sodium hydroxide solution, stir for 1.5 hours under the conditions of rotating speed of 200r / min and temperature of 28°C, then add chloroacetic acid, Under the condition of 75°C, react for 1.5h, adjust the pH value of the reaction solution to 7, add deionized water, keep warm for 8min, add acetone, let stand for 13min, filter and remove the filtrate, and wash the filter cake with ethanol for 3 times , after each washing for 2min, dry to obtain carboxymethyl chitosan;

[0052] Step A2: Add octamethylcyclotetrasiloxane and sodium hydroxide into the reaction kettle, pass in nitrogen gas for protection, and carry out the reaction for 6 hours under the conditions of rotation speed of 120r / min and temperature of 140°C to obtain alkali glue , Add 1,3-bis(3-aminopropyl)-tetramethyldisiloxane, tetramethylcyclotetrasiloxane, octamethylcyclotetras...

Embodiment 3

[0058] An antibacterial agent for shampoo, made by the following steps:

[0059] Step A1: Add chitosan to ethanol, soak for 5 hours, add sodium hydroxide solution, stir for 2 hours under the conditions of rotating speed of 300r / min and temperature of 30°C, then add chloroacetic acid, Under the condition of ℃, react for 1.5h, adjust the pH value of the reaction solution to 7, add deionized water, keep warm for 10min, add acetone, let stand for 15min, filter and remove the filtrate, and wash the filter cake with ethanol for 3 times, After each washing for 3 minutes, dry to obtain carboxymethyl chitosan;

[0060] Step A2: Add octamethylcyclotetrasiloxane and sodium hydroxide into the reaction kettle, pass in nitrogen gas for protection, and carry out the reaction for 8 hours at a rotation speed of 120r / min and a temperature of 150°C to obtain alkali gel , Add 1,3-bis(3-aminopropyl)-tetramethyldisiloxane, tetramethylcyclotetrasiloxane, octamethylcyclotetrasiloxane and dimethyl su...

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Abstract

The invention discloses an antibacterial agent for shampoo and a preparation method thereof. The preparation method comprises the following steps: reacting carboxymethyl chitosan and a silicone oil base solution under the action of dicyclohexylcarbodiimide and 4-dimethylaminopyridine, so that carboxyl of the carboxymethyl chitosan reacts with amino at one end of a molecular chain of the silicone oil base solution, and carboxymethyl chitosan molecules are connected with silicone oil base solution molecules and further react with an aminoethyl methacrylate quaternary ammonium salt; and reactinghydrogen on the molecular chain of the silicone oil base solution with double bonds of the aminoethyl methacrylate quaternary ammonium salt, so that aminoethyl methacrylate quaternary ammonium salt molecules are fixed on the molecular chain of the silicone oil base solution and further react with an intermediate 6, and amino on the intermediate 6 is condensed with partial carboxyl of the carboxymethyl chitosan, and as a result, the antibacterial agent is prepared. The antibacterial agent has an excellent antibacterial effect and is capable of inhibiting generation of dandruff.

Description

technical field [0001] The invention belongs to the technical field of shampoo preparation, and in particular relates to an antibacterial agent for shampoo and a preparation method thereof. Background technique [0002] Dandruff is a common disease of the head skin, manifested as dandruff, itching, etc. The global incidence rate is high, and the prevalence rate of the population together with seborrheic dermatitis is about 50%. At present, due to the aggravation of environmental pollution, the pace of life is accelerated and work Affected by factors such as increased stress, the number of people suffering from dandruff has increased significantly. These conditions have brought troubles to people's daily life. The problem of dandruff has become the second largest hair health problem that plagues consumers after hair loss. So antibacterial shampoo becomes the first choice. [0003] The antibacterial effect of the existing antibacterial agent is average. After the user uses th...

Claims

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Application Information

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IPC IPC(8): A61K8/73A61K8/58A61K8/41C08B37/08A61Q17/00A61Q5/02A61Q5/00A61P17/04
CPCA61K8/416A61K8/585A61K8/736A61K2800/524A61Q5/002A61Q5/006A61Q5/02A61Q17/005A61P17/04C08B37/003
Inventor 付正谋
Owner 付正谋
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