Aqueous emulsion containing organic silicon compound, preparation and use thereof in surface treatment

An organosilicon compound, water-based emulsion technology, applied in impregnating building materials, compound of formula II, preparation of special organosilicon compound, application of emulsion, application field of this emulsion, can solve the problem of reducing the hydrophobic effect of alkoxysilane, penetration Insufficient depth, etc.

Inactive Publication Date: 2009-01-28
GOLDSCHMIDT CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this preparation has many disadvantages. The addition of the surfactant will reduce the hydrophobic effect of the alkoxysilane, and its penetration depth is insufficient.
According to US-PS4661551, although the introduction of water-soluble groups in polysiloxanes (so-called "silicone surfactants") will cause any dilutable microemulsions, it must be used after 12-24h

Method used

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  • Aqueous emulsion containing organic silicon compound, preparation and use thereof in surface treatment
  • Aqueous emulsion containing organic silicon compound, preparation and use thereof in surface treatment
  • Aqueous emulsion containing organic silicon compound, preparation and use thereof in surface treatment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 11

[0105] According to the process of the invention, organosilicon compounds of formula (II) are prepared.

[0106] Usual process:

[0107] The alkoxysilane and surfactant or surfactant mixture are mixed in equimolar amounts or in excess of 0.1-5 mole % of surfactant and the pH is adjusted to about 5 with acid, especially hydrochloric acid.

[0108] The reaction was allowed to proceed by heating to reflux temperature with a continuous decrease in temperature. After the reaction was complete, the alcohol formed was removed under vacuum.

[0109] Yields > 97% are typically obtained. However, it is also possible, according to methods known from the prior art, to prepare said compounds from the corresponding chlorosilane compounds.

[0110] Depending on what proportion of the chlorine atoms should be replaced by surfactant molecules or alkoxy groups, one or more surfactants or alcohols are used in corresponding equimolar amounts or preferably in an excess of 0.1-5 mole %.

[0111...

Embodiment 12

[0120] Likewise, compounds of the type silanes substituted with two surfactant molecules were prepared from the corresponding dichlorosilanes or dialkoxysilanes as described in previous examples.

[0121]

[0122] Table 1.3 includes the following types of compounds prepared,

[0123]

[0124] Table 1.3

[0125]

[0126]

Embodiment 13

[0128] In this example the preparation of the following types of silicon surfactants is described.

[0129]

[0130] If working in ethanol, the sodium is first dissolved to form sodium ethanolate, followed by the addition of an equimolar amount of surfactant, calculated on alkali metal, followed by heating, preferably to reflux temperature. After about 2 hours, the reaction was complete, it was cooled and 3-chloropropyltriethoxysilane was added dropwise to the clear solution. Then heat to 50-65°C. After 1-2 hours, the reaction is complete at this temperature. After cooling, the precipitated NaCl was filtered and the alcohol was separated by distillation. The reaction is complete.

[0131] In another variation, the surfactant-O-Na-compound is prepared directly by placing the surfactant in an inert organic solvent, such as toluene, followed by the introduction of approximately equimolar amounts of sodium. The reaction was terminated after 1-2 hours at 70°C-80°C. Cool to ...

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Abstract

The invention provides a waterborne emulsion containing an organic silicon compound, and a preparation thereof and the application to surface treatment thereof. The invention discloses the waterborne emulsion containing the organic silicon compound which is used for surface treatment of inorganic base material, and also discloses a preparation thereof, a preparation of a specific organic silicon compound, and the application of the waterborne emulsion. On one hand, the invention relates to the waterborne emulsion containing the organic silicon compound, which is suitable for impregnating inorganic materials, especially for impregnating building materials, and also relates to the preparation of the special organic silicon compound such as the compound with the general formula II, and the application of the emulsion; on the other hand, the invention relates to a waterborne oil-in-water emulsion of functional alkoxy silane and siloxane oligomer, the preparation of the emulsion in a high-pressure emulsifying device, and the application of the emulsion to surface treatment of organic materials and inorganic materials. The size distribution of drops which is from 0.6 to 1.2 of the oil-in-water emulsion is preferably selected, and the size distribution is expressed by the value of Span.

Description

Technical field: [0001] The invention discloses an aqueous emulsion containing an organosilicon compound, which is used for treating the surface of an inorganic substrate, and also discloses the preparation of the emulsion and the preparation of a special organosilicon compound, and also discloses the application of the emulsion. [0002] The present invention relates, on the one hand, to aqueous emulsions containing organosilicon compounds, which are particularly suitable for impregnating building materials, to the preparation of specific organosilicon compounds, such as compounds of formula II, and to the use of such emulsions. [0003] [0004] In addition, oil-in-water aqueous emulsions of functional alkoxysilanes and siloxane oligomers are disclosed, their preparation in high-pressure emulsification equipment and their use in the surface treatment of organic and inorganic materials, especially mineral Application in hydrophobization of building materials. Background ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/49C04B41/64
CPCC04B41/009C04B41/4922
Inventor T·戈贝尔R·米歇尔H·阿尔夫J·卡尔B·巴特科威阿克B·斯坦德克K·韦森巴克
Owner GOLDSCHMIDT CHEM CORP
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