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A kind of organosilicon crosslinked polymer and its preparation method and application

A technology of cross-linking polymers and silicones, applied in the field of compounds, can solve problems such as poor stability and phase separation

Inactive Publication Date: 2021-05-11
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, the present invention provides a silicone cross-linked polymer and its preparation method and application, which are used to solve the problems that occur during long-term storage when the existing silicone cross-linked polymer is applied to products such as cosmetics and personal care. Phase separation, poor stability issues

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  • A kind of organosilicon crosslinked polymer and its preparation method and application
  • A kind of organosilicon crosslinked polymer and its preparation method and application
  • A kind of organosilicon crosslinked polymer and its preparation method and application

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preparation example Construction

[0035] The present invention also provides a method for preparing an organosilicon crosslinked polymer, comprising the following steps:

[0036] a) Mix long-chain alkyl polydimethylsiloxane polyethylene glycol with acrylic compound, and carry out esterification reaction under the first catalyst to obtain long-chain alkyl polydimethylsiloxane with the structure shown in formula (II) Silicone Polyethylene Glycol Acrylate;

[0037]

[0038] b) dissolving the long-chain alkyl polydimethylsiloxane polyethylene glycol acrylate in an organic solvent, adding polymethylhydrogensiloxane, and carrying out the addition and crosslinking reaction catalyzed by the second catalyst under anaerobic conditions, Obtain the organosilicon cross-linked polymer having the structure shown in formula (I);

[0039]

[0040] Wherein, x is 7-30, y is 1-100, n is 1-50, m is 1-100, a is 0-20, and b is 0-20.

[0041] In the present invention, the temperature of the esterification reaction is 80°C to ...

Embodiment 1

[0090] 1) 2g of acrylic acid is mixed with 20g of long-chain alkyl polydimethylsiloxane polyethylene glycol, stirred, after adding 0.03g of inhibitor hydroquinone and 0.22g of the first catalyst p-toluenesulfonic acid, at 90 Perform esterification reaction at ℃ for 6h to obtain long-chain alkyl polydimethylsiloxane polyethylene glycol acrylate;

[0091] 2) After dissolving 10 g of the long-chain alkyl polydimethylsiloxane polyethylene glycol acrylate prepared in step 1) in 35 ml of isopropanol, add to 15 g of polymethylhydrogen with an active hydrogen content of 0.18 wt % In siloxane, feed nitrogen and stir, then add 48 mg of 0.74% chloroplatinic acid isopropanol solution, raise the temperature to 80 ° C, carry out the addition and crosslinking reaction for 8 hours in the presence of the second catalyst chloroplatinic acid, and use rotary evaporation Remove the solvent isopropanol to obtain a silicone crosslinked polymer.

[0092] see figure 1 , is the infrared spectrogram o...

Embodiment 2

[0095] 1) 2g of acrylic acid is mixed with 16g of long-chain alkyl polydimethylsiloxane polyethylene glycol, stirred, after adding 0.03g of inhibitor hydroquinone and 0.18g of the first catalyst p-toluenesulfonic acid, at 100 Perform esterification reaction at ℃ for 8h to obtain long-chain alkyl polydimethylsiloxane polyethylene glycol acrylate;

[0096] 2) After dissolving 10 g of the long-chain alkyl polydimethylsiloxane polyethylene glycol acrylate prepared in step 1) in 35 ml of isopropanol, add to 15 g of polymethylhydrogen with an active hydrogen content of 0.18 wt % In siloxane, feed nitrogen and stir, then add 48 mg of 0.74% chloroplatinic acid isopropanol solution, raise the temperature to 80 ° C, carry out the addition and crosslinking reaction for 8 hours in the presence of the second catalyst chloroplatinic acid, and use rotary evaporation Remove the solvent isopropanol to obtain a silicone crosslinked polymer.

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Abstract

The invention belongs to the technical field of compounds, and in particular relates to an organosilicon cross-linked polymer and a preparation method and application thereof. The invention provides a silicone cross-linked polymer, which has a structure represented by formula (I). The organosilicon crosslinked polymer of the present invention is a liquid emulsifier, which contains long-chain alkyl, polyethylene glycol segment and silicone oil segment. The introduction of long-chain alkyl enhances its skin affinity and makes it closer to For body fat components, the surface tension, compatibility and lubricity have been improved; the introduction of polyethylene glycol segments has improved its compatibility with water; the cross-linked structure of the silicone cross-linked polymer has improved its Toughness, film forming and stability; the silicone crosslinked polymer has good affinity with other oils, has multiple emulsification functions, and can be directly used in cosmetics to prepare oil-in-water-in-oil (O / W / O ) Multiple emulsions, improve the skin feel and lubricity of cosmetics, and make cosmetics durable and stable.

Description

technical field [0001] The invention belongs to the technical field of compounds, and in particular relates to an organosilicon cross-linked polymer and a preparation method and application thereof. Background technique [0002] Silicone oils have good dispersibility and water resistance, but they have poor compatibility with other oil phases. Some scholars have proposed to use different groups to solidify or thicken silicone oil to ensure the stability of cosmetics, such as introducing alkyl groups, fatty alcohol compounds with 21 to 30 carbon atoms or ester groups into the silicon chain. However, traditional curing / thickening agents are all oily or viscous. When applied to the skin, it feels like a layer of oil film covers the surface. It is also difficult to maintain its stability when the temperature is high, and the application is not completely satisfactory. Therefore, silicone cross-linked polymers have received more and more attention from researchers. [0003] Sil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G77/46A61K8/894A61Q19/00
CPCA61K8/894A61K2800/10A61K2800/48A61Q19/00C08G77/46
Inventor 易国斌梁红萍唐子伦
Owner GUANGDONG UNIV OF TECH
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