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A kind of silicone elastomer gel and preparation method thereof

A body gel and silicone technology, applied in the field of silicone elastomer gel and its preparation, can solve the problems of clogging pipes and nozzles of spray curing equipment, poor recovery of silicone elastomer powder particles, and materials and/or man-hours, Loss and other problems, to achieve long-lasting skin texture, high stability, and reduce stickiness

Active Publication Date: 2017-12-19
湖南斯洛柯有机硅有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This deposit can also clog the pipes and nozzles of spray curing equipment
These deposits result in poor recovery of silicone elastomer powder particles and loss of material and / or man-hours

Method used

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  • A kind of silicone elastomer gel and preparation method thereof
  • A kind of silicone elastomer gel and preparation method thereof
  • A kind of silicone elastomer gel and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The preparation of the copolymer of the first polymer and the second polymer of embodiment 1

[0033] Step 1) Introduce the first polymer with 47.5% molar percentage and the second polymer with 52.5% molar percentage into the reactor, mix uniformly, and protect with nitrogen; wherein, the R in the first polymer 1 =C 8 h 17 , n / m=4 / 3, the average molecular weight is 2286; y / x=4 / 5 in the second polymer, the average molecular weight is 3858.

[0034] Step 2) Add the catalyst tetramethylammonium siloxanol, raise the temperature to 100°C, and continue the reaction for 2 hours at a stirring speed of 60r / min. After the reaction, the temperature is raised to 180°C, and the pressure is reduced to 0.25MPa to destroy the catalyst And remove the low boiler, gradually cool the reactor to obtain the copolymer of the first polymer and the second polymer to obtain A, and its average molecular weight is 15667.

Embodiment 2

[0035] Preparation of the copolymer of the first polymer and the second polymer in embodiment 2

[0036] Step 1) Introduce the first polymer with 42.5% molar percentage and the second polymer with 57.5% molar percentage into the reactor, mix uniformly, and protect with nitrogen; wherein, R in the first polymer 1 =C 12 h 25 , n / m=7 / 6, the average molecular weight is 2926; y / x=3 / 2 in the second polymer, the average molecular weight is 4154.

[0037] Step 2) Add the catalyst tetramethylammonium siloxanol, raise the temperature to 110°C, and continue the reaction at a stirring speed of 60r / min for 2.5 hours. After the reaction, raise the temperature to 170°C and reduce the pressure to 0.2MPa to destroy the catalyst And remove the low boiler, gradually cool the reactor to obtain the copolymer of the first polymer and the second polymer to obtain B, and its average molecular weight is 18051.

Embodiment 3

[0038] Embodiment 3 silicone elastomer gel preparation

[0039] Step 1) After the copolymer A prepared in Example 1 was pulverized by a high-speed pulverizer with a rotating speed of 25000 rpm for 3 minutes, the copolymer particles larger than 60 mesh (about 250-420 microns) were screened out with a sample sieve;

[0040] Step 2) Add 1000 g of squalane to the torque rheometer at 80°C and 100 r / min, then slowly add 500 g of the copolymer particles obtained in step 1), and stir slowly for 3 hours to swell;

[0041] Step 3) Stir rapidly at 500 r / min for 20 min to obtain a silicone elastomer gel in the form of a uniform gel.

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PUM

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Abstract

The invention relates to the field of high polymer materials, in particular to organic silicone elastomer gel and a preparation method thereof. The organic silicone elastomer gel is prepared from a copolymer of a first polymer and a second polymer as well as a carrier fluid, wherein the structural formula of the first polymer is (I), the structural formula of the second polymer is (II), R1=CzH2z+1, z=8-18, m, n=8-15, x=10-20 and y=15-25. The organic silicone elastomer gel is well compatible with most oil and active ingredients (such as essence, sun-screening agents, skin whitening agents, vitamin and vitamin derivatives), is easy to add and is used as a thickener for water-in-oil and anhydrous formulas. The invention further provides the preparation method of the organic silicone elastomer gel to facilitate industrial production.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a silicone elastomer gel and a preparation method thereof. technical background [0002] Silicone elastomer gel is a class of substances prepared using the inherent relatively small particle structure of silicone powder particles and its elastic properties (deformable but the ability to return to its original shape after removing the deforming force). It is widely used in high-end personal care products due to its unique silky or powdery feeling. [0003] Silicone elastomer gels are not well compatible with various personal care oils, waxes, actives and functional additives. In the presence of ingredients such as oils, waxes, and active substances, the thickening properties, skin feel effects, and even sensory advantages of silicone elastomer gels are lost. Therefore, it is necessary to further improve silicone elastomer gels and various personal care ingredients. compatibility...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G77/44A61K8/891A61Q19/00A61Q1/00A61Q15/00
CPCA61K8/891A61Q1/00A61Q15/00A61Q19/00C08G77/44
Inventor 孙东明高鹏东徐运欢陈名吉
Owner 湖南斯洛柯有机硅有限公司
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