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Silicone emulsion and method for producing same

A technology of silicone emulsion and silicone resin, which is applied in the field of high-concentration transparent silicone emulsion and its preparation, and can solve problems such as the stability of difficult-to-emulsify emulsions

Pending Publication Date: 2021-09-14
KCC SILICONE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, Patent Document 1 uses the above inversion method, making it difficult to emulsify the emulsion and having poor stability

Method used

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  • Silicone emulsion and method for producing same
  • Silicone emulsion and method for producing same
  • Silicone emulsion and method for producing same

Examples

Experimental program
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preparation example Construction

[0066] The preparation method of silicone emulsion

[0067] The preparation method of the silicone emulsion according to the present invention comprises subjecting a nonionic surfactant to aqueous dispersion, and dividing the silicone resin mixture into components and introducing it into the aqueous dispersed nonionic surfactant eight or more times to prepare mixture.

[0068] At this time, the silicone resin mixture includes a silicone resin and a diluent, and the prepared silicone emulsion includes the silicone resin mixture and the nonionic surfactant in a weight ratio of 1:0.1 to 1:0.4. Specific examples of the silicone resin, diluent, and nonionic surfactant are the same as described above for the silicone emulsion.

[0069] Subjecting Nonionic Surfactants to Aqueous Dispersion

[0070] In this step, the nonionic surfactant is subjected to aqueous dispersion.

[0071] Specifically, in this step, a nonionic surfactant and a solvent may be mixed and subjected to aqueou...

Embodiment 1

[0085] Embodiment 1: Preparation of silicone emulsion

[0086] The components were used in the compositions described in Table 1, and the silicone resin mixture was divided and introduced under the process conditions described in Table 3.

[0087] Specifically, deionized water-1 and a nonionic surfactant were introduced into the reactor, and stirred for 30 minutes while raising the temperature to 55°C. Thereafter, while maintaining the reactor at 55° C., the silicone resin mixture was divided and introduced 15 times at intervals of 5 minutes, and then stirred at 1,000 rpm for 60 minutes. Then, deionized water-2 was added to the reactor, stirred at 1,000 rpm for 30 minutes, a preservative was added, and then stirred at 1,000 rpm for 30 minutes. After that, deionized water-3 was added to the reactor, and stirred at 1,000 rpm for 30 minutes to prepare a silicone emulsion.

Embodiment 2 to Embodiment 8 and comparative example 1 to comparative example 8

[0088] Example 2 to Example 8 and Comparative Example 1 to Comparative Example 8: Preparation of Silicone Emulsion

[0089] Silicone emulsions were prepared in the same manner as in Example 1, but the components were used with the compositions described in Table 1 and Table 2, and the silicone resin mixture was divided into components under the process conditions described in Table 3 and introduce.

[0090] [Table 1]

[0091]

[0092]

[0093] [Table 2]

[0094]

[0095] [table 3]

[0096]

[0097] The manufacturers and product names of the components used in Comparative Examples and Examples are shown in Table 4.

[0098] [Table 4]

[0099]

[0100]

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Abstract

The present invention relates to: a silicone emulsion comprising a silicone resin mixture and a nonionic surfactant, wherein the silicone resin mixture and the nonionic surfactant are included in a weight ratio of 1:0.1 to 1:0.4; and a method for producing same.

Description

technical field [0001] The invention relates to a high-concentration transparent silicone emulsion and a preparation method thereof. Background technique [0002] Silicone emulsions are prepared by dispersing silicone in organic solvents or water, and usually by diluting high-viscosity silicone gums with silicone oil or siloxane having a lower viscosity than silicone gums, and then adding surfactants, Emulsifiers, solvents, etc. are prepared in the form of oil / water (O / W) emulsions. [0003] In particular, high-viscosity and high-solid-content silicone emulsions are generally prepared by an inversion method in which a silicone gum is mixed with a surfactant, and then water or an organic solvent is introduced thereinto. The inversion method is an oil-based reaction, and generally uses a phase change process with high-speed stirring in a scraper mixer, and a cooling process for controlling the temperature rise in the reaction tank due to high-speed stirring. [0004] In this...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/03C08L83/04
CPCC08L83/04C08J3/03C08J2383/04C08J2483/06C08G77/04C08L83/00C08L71/02C08L2201/54C08L2205/02
Inventor 刘贤珠李智惠朴祉玧
Owner KCC SILICONE CORP
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