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A kind of organoxime silicon compound and its preparation method and application

A technology of organosilicon and organoxime, which is applied in the field of organoxime-based silicon compounds and their preparation and application, and can solve problems such as different and fine adjustment of system activity

Active Publication Date: 2015-08-19
TONSAN ADHESIVES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The organoxime-based silicon compound in the room temperature curing silicone system generally has two or more oxime groups, such as methyl ethyl ketoxime-based organosilicon compounds, and its activity mainly depends on the substitution on the silicon The number and type of groups, such as methyl tributylketoxime silane, vinyl tributylketoxime silane and tetrabutylketoxime silane, etc., but it is difficult to fine-tune the activity of the system, when needed It is often achieved by compounding different crosslinking agent molecules, such as the mixed use of methyl tributylketoxime silane and vinyl tributylketoxime silane, but due to the large difference between their reactivity Differences, for different systems, will lead to different characteristics of the silicone system in curing, in the formation of cross-linked networks, and even in storage;

Method used

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  • A kind of organoxime silicon compound and its preparation method and application
  • A kind of organoxime silicon compound and its preparation method and application
  • A kind of organoxime silicon compound and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0060] Methyl dimethyl ketoxime bis(methyl ethyl ketoxime) ketoxime [MeSi(AO)(MEKO) 2 】Preparation

[0061] The reaction device includes a 5-liter glass jacketed reaction kettle, an upper mechanical stirring device, a reflux column, a constant pressure dropping funnel, a thermometer and a drying tube. Before the reaction, an inert gas was passed into the system, and 600 grams of an organic solvent, a premixed solution of methyl ethyl ketoxime (596.5 grams, 6.86 moles) and dimethyl ketoxime (484.5 grams, 6.64 moles) were added respectively, Stir evenly, add 500 grams of organic solvent in the constant pressure dropping funnel, add 317.5 grams (2.12 moles) of methyltrichlorosilane, drop the solution of methyltrichlorosilane into the reactor under protection, and release With a lot of heat, the temperature of the system rises. Control the addition rate of trichlorosilane, and at the same time turn on the cooling device so that the temperature of the reaction solution is not high...

example 2

[0063] Preparation of Organic Ketoximosilanes with Different Structures

[0064] Using the same preparation method as Example 1, the following organoxime silanes with different structures were prepared, and their composition and reaction yield are shown in Table 1.

[0065]

[0066] Note: The above composition analysis is obtained by GCMS;

example 3

[0068] In the test, the room temperature curing silicone composition was:

[0069] Hydroxy-terminated polydimethylsiloxane 120

[0070] Filler Calcium Carbonate 60

[0071] Crosslinker 6

[0072] Organotin (DBTDL) 0.12

[0073] The composition was mixed according to the description of this scheme, and the experimental results are shown in Table 2;

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Abstract

The invention relates to organic oximidosilane and a preparation method thereof. The composition of the organic oximidosilane is shown as a molecular structure (A), wherein the molecular structure (A) contains two or more different kinds of oximido substituents. The silane can be obtained by performing oximido formation on corresponding chlorosilane, aminosilane and alkoxy silane. The silane can be used as a curing cross-linking agent or a chain extender in condensed room temperature cured silicone rubber, can provide adjustable reaction activity, and can control the variety of volatile organic compounds (VOC).

Description

technical field [0001] The invention relates to an organoxime-based silicon compound, a preparation method thereof and an application in a room temperature curing silicone adhesive. The organoxime-based silicon compound can be used as a crosslinking agent, a coupling agent and a functional additive for sealants Or the curing and crosslinking of silicone materials in other industries, or the improvement and adjustment of other properties. Background technique [0002] The room temperature curing silicone material is exposed to the atmosphere at room temperature, reacts with water in the air, cross-links and solidifies to become an elastomer, and is stable in storage when water is isolated. Such products are generally achieved by mixing a certain proportion of diorganopolysiloxane and crosslinking agent. The silicone crosslinking agent has multiple hydrolyzable groups, such as alkoxy, oxime, amine, carboxyl, etc. In addition, in many cases, according to specific performance r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F7/10C08L83/06C08L83/07C08K5/5465
Inventor 刘川王瑶苏丹郑妙生
Owner TONSAN ADHESIVES INC
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