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Vinyl terminated polysiloxane containing quaternary ammonium salt, its synthesis and application thereof in preparation of intrinsic quaternary ammonium salt type antibacterial silicone rubber

A vinyl-terminated, chlorohydrocarbyl polysiloxane technology is applied to vinyl-terminated quaternary ammonium salt-containing polysiloxane and its synthesis and application in the preparation of intrinsic quaternary ammonium salt type antibacterial silicone rubber, It can solve the problems of the decline of the mechanical properties of the silicone rubber and the deterioration of the durability of the antibacterial properties of the silicone rubber, and achieve the effects of long-lasting antibacterial properties, long-lasting antibacterial properties and high safety performance.

Inactive Publication Date: 2018-09-28
SHANDONG JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the bulk modification method is mainly realized by direct blending, that is, the intrinsic antibacterial silicone rubber is prepared by physically blending the antibacterial agent and raw silicone rubber. Although this method can overcome the surface modification method Some defects of silicone rubber, and can improve the antibacterial performance of silicone rubber, but the distribution of the added antibacterial agent in the matrix and the compatibility with the silicone rubber matrix often lead to the decline of the mechanical properties of silicone rubber. In some cases, the antibacterial agent Migration will also occur in the matrix, making the durability of the antibacterial performance of silicone rubber worse
After searching, there is no report on the method of preparing intrinsic quaternary ammonium salt type antibacterial silicone rubber by synthesizing polysiloxane containing quaternary ammonium salt and hydrosilylation

Method used

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  • Vinyl terminated polysiloxane containing quaternary ammonium salt, its synthesis and application thereof in preparation of intrinsic quaternary ammonium salt type antibacterial silicone rubber
  • Vinyl terminated polysiloxane containing quaternary ammonium salt, its synthesis and application thereof in preparation of intrinsic quaternary ammonium salt type antibacterial silicone rubber
  • Vinyl terminated polysiloxane containing quaternary ammonium salt, its synthesis and application thereof in preparation of intrinsic quaternary ammonium salt type antibacterial silicone rubber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Add 3.60g D 3 D-C 3 h 6 Cl, 35.97gD 4 , 0.72g tetramethyldivinyl disiloxane, 0.40g Purolite CT-175, stir to mix evenly, slowly raise the temperature to 100°C, react for 10h, and the reaction is completed, cool the system to room temperature, filter to remove the catalyst, The low boilers were distilled off under reduced pressure to obtain a colorless transparent oily liquid, namely vinyl-terminated chloropropyl polysiloxane, with a yield of 96%.

[0036] Dissolve 3.00 g of the obtained vinyl-terminated chloropropyl-containing polysiloxane in 4.50 g of n-butanol, then add 1.51 g of N,N-dimethyl n-octylamine, nitrogen protection, and reflux at 110°C for 72 hours After the reaction, the solvent and unreacted N,N-dimethyl n-octylamine were distilled off under reduced pressure to obtain vinyl-terminated quaternary ammonium salt-containing polysiloxane with a yield of 85%.

Embodiment 2

[0038]Add 3.60g D 3 D-C 3 h 6 Cl, 35.97g D 4 , 0.72g tetramethyldivinyldisiloxane, 0.40g tetramethylammonium hydroxide silicon alkoxide, stir to mix evenly, slowly raise the temperature to 70°C for 0.5h, then raise the temperature to 100°C, react for 10h, The temperature of the system was raised to 130° C. and kept for 0.5 h, and then the low boilers were distilled off under reduced pressure to obtain a colorless transparent oily liquid, namely vinyl-terminated chloropropyl polysiloxane, with a yield of 95%.

[0039] The preparation of vinyl-terminated quaternary ammonium salt-containing polysiloxane is as described in Example 1.

Embodiment 3

[0041] As described in Example 1, the difference is to change the two raw material rings D 3 D-C 3 h 6 Cl and D 4 The component distribution ratio, namely 4.80gD 3 D-C 3 h 6 Cl, 32.58g D 4 .

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Abstract

The invention discloses vinyl terminated polysiloxane containing quaternary ammonium salt and a synthetic method thereof. The vinyl terminated polysiloxane containing quaternary ammonium salt is of the structure as shown in the formula (I). Firstly vinyl terminated chloric cycloalkylalkoxy polysiloxane is prepared by ring-opening polymerization and equilibrium, and the product is prepared produced by quaternization reaction of the vinyl terminated chloric cycloalkylalkoxy polysiloxane and tertiary amine. The invention also discloses an application of vinyl terminated polysiloxane containing quaternary ammonium salt, serving as crude rubber, in preparation of intrinsic quaternary ammonium salt type antibacterial silicone rubber. The quaternary ammonium salt antibacterial group is introduced to the crude rubber molecule structure of the silicone rubber, the antibacterial agent is enabled to be distributed evenly in a base body, and the obtained silicone rubber is long in antimicrobial time and high in security. A new field is open for the application of the organic silicone polymer quaternary ammonium salt, and a novel idea is provided to the new technology of antimicrobial materials.

Description

technical field [0001] The present invention relates to a kind of polysiloxane and its synthesis and the preparation method of intrinsic type antibacterial silicone rubber, especially to a kind of vinyl-terminated polysiloxane containing quaternary ammonium salt and its synthesis method and the preparation method of intrinsic quaternary ammonium The application in salt-type antibacterial silicone rubber, that is, the synthesis of quaternary ammonium salt-containing polysiloxane and the method for preparing intrinsic quaternary ammonium salt-type antibacterial silicone rubber, belongs to the field of organosilicon polymer materials. Background technique [0002] In recent years, with the development of science and technology, people have higher and higher requirements on the performance of materials, especially the antibacterial performance. As a new type of functional material, antibacterial materials can effectively inhibit bacteria, germs and other microorganisms harmful t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G77/26C08G77/24C08G77/20C08L83/08C08L83/05C08K3/36
CPCC08G77/20C08G77/24C08G77/26C08L83/08C08L2205/02C08L83/04C08K3/36
Inventor 董福营冯圣玉贾天松唐新德郝家文秦雪梅李帅杰王勤王宪朋
Owner SHANDONG JIAOTONG UNIV
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