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VOC emission-free silane coupling agent and synthetic method thereof

A technology of silane coupling agent and synthesis method, which is applied in the direction of silicon organic compounds, chemical instruments and methods, compounds of group 4/14 elements of the periodic table, etc., and can solve problems such as high raw material cost, complicated process, and many side reactions , to achieve the effects of low environmental pollution, simple process equipment and high content

Inactive Publication Date: 2015-05-13
JINGZHOU JIANGHAN FINE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

From the perspective of molecular structure, the synthesis of this VOC-free coupling agent can also be catalyzed by silane coupling agents containing active groups and hexamethyldisiloxane, but this synthesis route requires catalysts and side reactions Many, the cost of raw materials is high, and the process is complicated, which is neither economical nor environmentally friendly

Method used

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  • VOC emission-free silane coupling agent and synthetic method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Add 2 mol (444.8 g) N-(2-aminoethyl)-3-aminopropyltrimethoxysilane and 9 mol (976.5 g) trimethylchlorosilane into a 5L four-necked flask, turn on the stirring, and the stirring speed is 90 rpm, drop 852.8 grams of 1:1 methanol aqueous solution for cold water bath reaction, the cold water bath reaction temperature is 30°C, the dropwise addition time of methanol aqueous solution is 5 hours, and continue aging at 30°C after the addition of methanol aqueous solution React for 18 hours. After the aging reaction, the material is introduced into a pear-shaped separatory funnel, and the layers are static for 1 hour. The upper layer is the crude silane coupling agent without VOC emissions, and the lower layer is industrial hydrochloric acid aqueous solution.

[0042] The aqueous hydrochloric acid solution of the lower layer is separated, and the crude product of the upper layer is washed 5 times by washing water under the condition of each 5 minutes, then neutralized by sodium h...

Embodiment 2

[0044]Add 2 mol (496.7 g) of 3-methacryloxypropyltrimethoxysilane and 9 mol (976.5 g) of trimethylchlorosilane into a 5L four-necked flask, turn on the stirring at 90 rpm, drop Add 883.9 grams of 1:1 methanol aqueous solution for cold water bath reaction, the cold water bath reaction temperature is 40°C, the dropwise addition time of methanol aqueous solution is 6 hours, after the dropwise addition of methanol aqueous solution, continue aging reaction at 40°C for 18 hours. After the aging reaction, the material is introduced into a pear-shaped separatory funnel, and the layers are static for 1 hour. The upper layer is the crude silane coupling agent without VOC emissions, and the lower layer is industrial hydrochloric acid aqueous solution.

[0045] The aqueous hydrochloric acid solution of the lower layer is separated, and the crude product of the upper layer is washed 3 times by washing water under the condition of each 10 minutes, then neutralized by sodium hydroxide to a ne...

Embodiment 3

[0047] Add 2 mol (472.8 g) of 3-(2,3-epoxypropoxy)propyltrimethoxysilane and 9 mol (976.5 g) of trimethylchlorosilane into a 5L four-necked flask, and turn on stirring at 120 RPM, drop 869.5 grams of 1:1 methanol aqueous solution for cold water bath reaction, the cold water bath reaction temperature is 35°C, the dropwise addition time of methanol aqueous solution is 5 hours, after the methanol aqueous solution is added dropwise, continue the aging reaction at 35°C 18 hours. After the aging reaction, the material is introduced into a pear-shaped separatory funnel, and the layers are static for 1 hour. The upper layer is the crude silane coupling agent without VOC emissions, and the lower layer is industrial hydrochloric acid aqueous solution.

[0048] The aqueous hydrochloric acid solution of the lower layer is separated, and the crude product of the upper layer is washed 5 times by washing water under the condition of each 8 minutes, then neutralized by sodium hydroxide until ...

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Abstract

The invention relates to a VOC emission-free silane coupling agent and a synthetic method thereof, and belongs to the technical field of fine chemical engineering. The synthetic method comprises the following steps: feeding a silane coupling agent containing active groups and trialkylchlorosilane into a reactor according to ratio, dropping a methane water solution into the reactor to perform a cold bath reaction while stirring, then transferring the materials in the reactor to a conical container to be layered by standing, wherein a crude product is arranged at the upper layer, washing, neutralizing, drying and vacuumizing the crude product to pull out the low-boiling-point substance, so as to obtain the VOC emission-free silane coupling agent. The silane coupling agent product disclosed by the invention is high in content, low in energy consumption, low in environment pollution, suitable for industrialized production, and very wide in application prospect; during the using process, the VOC emission-free silane coupling agent can be directly viscosified through crosslinking and cured without hydrolysis, so that bubbles and low-boiling-point substances cannot be generated.

Description

technical field [0001] The invention relates to a VOC-free silane coupling agent and a synthesis method thereof, belonging to the technical field of fine chemicals. Background technique [0002] Silane coupling agent is widely used in industrial production, such as: paint, rubber, plastic, paint, machinery, electronics and other fields, known as industrial monosodium glutamate. Silane coupling agent is an organosilicon compound containing two groups with different chemical properties in the molecule, and the general formula can generally be YSiX 3 It means that Y is a non-hydrolyzable active group, and X is a hydrolyzable group. During use, the X group undergoes a hydrolysis reaction to generate Si-OH, and simultaneously generates low-molecular HX volatile substances. The equation is: [0003] wxya 3 + H 2 O --- YSi(OH) 3 + 3HX [0004] where YSi(OH) 3 The Y group and OH group are respectively connected with different substrates to achieve the coupling...

Claims

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Application Information

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IPC IPC(8): C07F7/08C07F7/10
Inventor 胡江华甘俊刘明锋秦传俊陈圣云甘书官
Owner JINGZHOU JIANGHAN FINE CHEM