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A kind of pre-hydrolyzed organosilicon precursor composition for stone protection and preparation method thereof

A composition and pre-hydrolysis technology, applied in the direction of coating, etc., can solve the problems of poor storage stability and protective effect, achieve long-term protective effect, accelerate curing speed, and improve hydrophobic performance

Active Publication Date: 2022-07-29
厦门锶特材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to solve the problem of poor storage stability and protective effect of existing alcohol-based stone protective agents, in the prior art, other components are generally added to improve the adhesion performance. The inventor tried to pre-hydrolyze organosilane. The reaction principle is as follows:

Method used

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  • A kind of pre-hydrolyzed organosilicon precursor composition for stone protection and preparation method thereof
  • A kind of pre-hydrolyzed organosilicon precursor composition for stone protection and preparation method thereof

Examples

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Effect test

Embodiment 1

[0032] Preparation of pre-hydrolyzed organosilicon precursor composition, the method is as follows:

[0033] First, 40 parts by weight of deionized water was prepared in the reaction kettle, and 10 parts by weight of ethylene glycol and 30 parts by weight of diethanolamine were sequentially added during stirring, mixed uniformly, and heated to 70° C. to obtain material A.

[0034] Second, 10 parts by weight of aminosilane and 5 parts by weight of titanate were slowly added dropwise, and the mixture was refluxed at 65° C. for 1 hour until the material was clear to obtain material B.

[0035] Third, slowly pump in 40 parts by weight of a composite alkyl silane coupling agent, which is composed of methyltrimethoxysilane, dimethyldimethoxysilane and hexamethyldisiloxane, The weight ratio is 7:2:1, prepared by mixing in advance, heating the system to 70°C and refluxing for 1 hour. Then, it was transferred to rotary evaporation, and the temperature was raised to 80° C. and kept for...

Embodiment 2

[0039] Preparation of pre-hydrolyzed organosilicon precursor composition, the method is as follows:

[0040] First, 60 parts by weight of deionized water was prepared in the reaction kettle, and 20 parts by weight of ethylene glycol and 50 parts by weight of diethanolamine were sequentially added during stirring, mixed uniformly, and heated to 70° C. to obtain material A.

[0041] Second, 15 parts by weight of aminosilane and 10 parts by weight of titanate were slowly added dropwise, and the mixture was refluxed at 65° C. for 1 hour until the material was clear to obtain material B.

[0042]Third, slowly pump 60 parts by weight of a composite alkyl silane coupling agent, which is composed of methyltrimethoxysilane, dimethyldimethoxysilane and hexamethyldisiloxane, The weight ratio is 7:2:1, prepared by mixing in advance, heating the system to 70°C and refluxing for 1 hour. Then, it was transferred to rotary evaporation, and the temperature was raised to 80° C. and kept for 1 ...

Embodiment 3

[0046] Preparation of pre-hydrolyzed organosilicon precursor composition, the method is as follows:

[0047] First, 50 parts by weight of deionized water was prepared in the reaction kettle, and 15 parts by weight of ethylene glycol and 40 parts by weight of diethanolamine were sequentially added during stirring, mixed uniformly, and heated to 70° C. to obtain material A.

[0048] Second, 10 parts by weight of aminosilane and 5 parts by weight of titanate were slowly added dropwise, and the mixture was refluxed at 65° C. for 1 hour until the material was clear to obtain material B.

[0049] Third, slowly pump in 50 parts by weight of a composite alkyl silane coupling agent, the composite alkyl silane coupling agent is composed of methyltrimethoxysilane, methyldimethoxysilane and hexamethyldisiloxane. The ratio is 7:2:1, prepared by mixing in advance, heating the system to 70°C and refluxing for 1 hour. Then, it was transferred to rotary evaporation, and the temperature was ra...

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Abstract

The invention relates to a pre-hydrolyzed organosilicon precursor composition for stone protection and a preparation method thereof, comprising the following steps: (1) mixing water, polyol and organic base, and heating to obtain material A; (2) adding Adding aminosilane and titanate coupling agent to the material A, heating and refluxing until the material is clarified to obtain material B; (3) adding a compound alkyl silane coupling agent to the material B, heating to make the compound alkane Hydrolysis of base silane coupling agent. The pre-hydrolyzed organosilicon precursor composition is easily soluble in lower alcohols such as methanol and ethanol, and the stone protective agent obtained after dilution can fully penetrate into the pores of the stone, has good protective performance, and can be stored stably at room temperature. At the same time, the compatibility with the lower alcohol solvent can reduce the dependence of the stone protective agent on the petroleum solvent, and reduce the use cost of the solvent-based protective agent.

Description

technical field [0001] The invention relates to the technical field of stone protection, in particular to a prehydrolyzed organosilicon precursor composition for stone protection and a preparation method thereof. Background technique [0002] Silicone materials have been widely used in the field of building protection and waterproofing, especially in the field of stone protection. Products can be roughly divided into two categories: water-based and oil-based (hereinafter referred to as solvent-based), among which solvent-based protective agents have been valued for their excellent wetting and penetration properties. [0003] At present, solvent-based protective agents commonly used in stone surface treatment generally use systems containing silane coupling agents. Since silane coupling agents are hydrolyzed in contact with water, their properties are unstable. In order to avoid hydrolysis, hydrocarbon solvents are generally used as silane coupling agents. The diluent should...

Claims

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Application Information

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IPC IPC(8): C09D183/08C04B41/49
CPCC09D4/00C09D183/08C04B41/4922C08G77/26C04B41/46C04B41/4535
Inventor 倪永金
Owner 厦门锶特材料科技有限公司
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