Method for dispersing highly viscous organosilicon mixture

A silicone and high-viscosity technology, applied in the direction of mixing methods, chemical instruments and methods, emulsification, etc., can solve problems such as difficulty in controlling the degree of crosslinking of silicone polyether, difficulty in ensuring consistency of emulsion stability, etc.

Inactive Publication Date: 2008-11-05
滁州四新科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To improve the stability of the emulsion, US Patent US4853474 improves the low temperature resistance of the emulsion by cross-linking silicon polyether, but this method is difficult to control the degree of cross-linking of the silicon polyether itself, so the stability of the emulsion is difficult to ensure consistency ; The application of the alkyl silicon polyether introduced in US5451692 in the preparation of water-in-oil emulsion improves the compatibility with the oil phase components through the introduction of alkyl groups

Method used

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  • Method for dispersing highly viscous organosilicon mixture
  • Method for dispersing highly viscous organosilicon mixture
  • Method for dispersing highly viscous organosilicon mixture

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Embodiment 1: the synthesis of series polyether

[0040] Table 2 Synthesized polyethers

[0041] serial number

[0042] Synthetic method: Add propenol or butanol and 0.3% KOH catalyst into polyether reactor. Then continue to heat up to around 130°C, first add ethylene oxide EO to it, then add propylene oxide PO, keep warm for 60 minutes after the addition, decolorize, neutralize and absorb and refine with acid clay to obtain a colorless viscous liquid.

Embodiment 2

[0043] Embodiment 2: the low hydrogen-containing silicone oil of synthesizing high viscosity

[0044] Table 3 Synthetic high viscosity low hydrogen silicone oil

[0045]

[0046] High-viscosity low-hydrogen-containing silicone oil is prepared by chemical reaction under the action of an acidic catalyst according to the above-mentioned ratio of raw materials. The catalyst is sulfuric acid. After the reaction, the catalyst can be neutralized and then filtered. Hydrogen silicone oil S1, S2, S3, S4.

Embodiment 3

[0047] Example 3: Synthesis of high-viscosity silicone emulsifier (ie: silicon polyether)

[0048] The following silicone polyether emulsifiers can be prepared according to the hydrosilylation method or dehydrogenation condensation reaction:

[0049] Table 4 Synthesis of Silicone Polyethers

[0050] S1

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Abstract

The invention provides a method for dispersing high viscosity of silicone mixtures, which is characterized in that: an emulsion prepared by the method is composed of 5 to 25 percent of high viscosity of silicone mixtures, 4 to 25 percent of a high viscosity of silicone emulsifier, 0 to 15 percent of a normal emulsifier, 1 to 5 percent of a thickener and 60 to 90 percent of water; the preparation method comprises the steps that: (1) the high viscosity of silicone emulsifier, the normal emulsifier and the high viscosity of silicone mixtures are mixed, stirred and heated to the temperature of 50 to 80 DEG C and the heat is preserved for 20 to 60 minutes to guarantee full and even mixing of the silicone mixtures and the emulsifiers; (2) water is added slowly and the mixture is stirred quickly during phase transition to ensure that a W / O type emulsion is changed into an O / W type emulsion, and then water is continued to be added until the quality concentration of a crude emulsion gets to 40 to 60 percent; (3) the crude emulsion is carried out colloid mill to be further emulsified; (4) the mixture is diluted by a thickener aqueous solution. The method can obtain a stable emulsion of high viscosity of silicone mixtures and the storage and application stability of the emulsion are improved.

Description

technical field [0001] The invention relates to a method for improving the stability of an emulsion, more precisely the invention relates to a method for improving the stability of a high-viscosity silicone mixture emulsion, mainly by emulsifying a high-viscosity silicone mixture with a relatively high-viscosity silicone emulsifier Achieved. The invention relates to the preparation of fine chemical additives, and therefore belongs to the technical field of fine chemical preparations. technical background [0002] High-viscosity silicone emulsion has a wide range of applications, and can be used in textile finishing agents, fabric softeners, antiperspirants, defoamers, etc. High-viscosity simethicone is also an important component in shampoos . The dispersion emulsion of high-viscosity silicone mixture is prepared by the following two methods. The first is formed by polymerization, such as hydroxyl silicone oil emulsion; the second is prepared by mechanical method, and the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F3/10C08G77/46B01F23/47
Inventor 吴飞曹治平钟翔邹云熊发华
Owner 滁州四新科技有限责任公司
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