Preparation method of amino silane modified urethane acrylate resin

A technology of urethane acrylate and aminosilane, which is applied in the field of preparation of silicone coupling agent modified urethane acrylate resin, can solve the problems of insufficient heat resistance and water resistance, achieve good stability, simple and feasible experiment, and improved The effect of smooth sexual process

Inactive Publication Date: 2006-11-22
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present invention uses the primary aminosilane coupling agent produced in large quantities to obtain a secondary aminosilane coupling agent with excellent performance and r

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0025] Example 1

[0026] (1) Add 7.02g of γ-aminopropyltriethoxysilane (KH550) into a four-necked flask, connect a thermometer and a stirring paddle, pass high-purity nitrogen for 20 minutes, and heat up to 60°C; 5g of γ-glycidoxypropyltrimethoxysilane was dropped, and then kept at 60°C for 3 hours to obtain a modified silane coupling agent secondary aminosilane.

[0027] (2) Put 100g of polyether polyol (N-220) and 50g of hydroxy acrylate resin (hydroxyl value 40.5mgKOH / g) into a four-necked flask, heat up to 60°C, mix for half an hour and then heat up to 110°C Draw a vacuum for 2.5 hours under a vacuum of -0.1Mpa to remove unreacted monomers (mainly butyl acrylate and methyl methacrylate monomers) and residual moisture in the mixture until there is no distillate.

[0028] (3) Then lower the temperature to 50°C and release the vacuum; add 30.62g of diphenylmethane diisocyanate (MDI) after passing high-purity nitrogen for 30 minutes. After the exothermic peak is over, the tempera...

Example Embodiment

[0030] Example 2

[0031] (1) Add 7.02g of γ-aminopropyltriethoxysilane (KH550) into a four-necked flask, connect a thermometer and a stirring paddle, pass high-purity nitrogen for 20 minutes, and heat up to 40°C; 5g of γ-glycidoxypropyltrimethoxysilane was dropped, and then kept at 40°C for 3 hours to obtain a modified silane coupling agent secondary aminosilane.

[0032] (2) Put 150g of polyether polyol (N-220) and 50g of hydroxy acrylate resin (hydroxyl value 40.5mgKOH / g) into a four-necked flask, raise the temperature to 60℃, mix for half an hour and then raise the temperature to 90℃ Draw a vacuum for 2.5 hours under a vacuum of -0.1Mpa to remove unreacted monomers (mainly butyl acrylate and methyl methacrylate monomers) and residual moisture in the mixture until there is no distillate.

[0033] (3) Then cool down to 20°C and release the vacuum; add 30.76g of toluene diisocyanate (TDI) after 30 minutes of passing high-purity nitrogen, heat up to 70°C after the exothermic peak ...

Example Embodiment

[0035] Example 3

[0036] (1) Add 4.5g of γ-aminopropyltriethoxysilane (KH550) into a four-necked flask, connect to a thermometer and a stirring blade, pass high-purity nitrogen for 20 minutes, and raise the temperature to 50°C; 5g of γ-glycidoxypropyltrimethoxysilane was dropped, and then kept at 50°C for 2 hours to obtain a modified silane coupling agent secondary aminosilane.

[0037] (2) Add 200g of polyether polyol (N-220) and 50g of hydroxy acrylate resin (hydroxyl value 40.5mgKOH / g) into a four-necked flask, raise the temperature to 60°C, mix for half an hour and then raise the temperature to 110°C Draw a vacuum for 2.5 hours under a vacuum of -0.1Mpa to remove unreacted monomers (mainly butyl acrylate and methyl methacrylate monomers) and residual moisture in the mixture until there is no distillate.

[0038] (3) Then cool down to 30°C and release the vacuum; add 41.08g of toluene diisocyanate (TDI) after 30 minutes of passing high-purity nitrogen, heat up to 60°C after the ...

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PUM

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Abstract

The invention discloses a polycamacrylacid ester resin making method of modified aminosilane, which comprises the following steps: dripping epoxy radical silane in the primary amino radical silane at 40-100 deg.c; finishing dripping within 15-60 min; reacting for 1-3 h at 40-100 deg.c to produce modified silane coupling agent; blending polyether polyol and hydroxyl acroleic acid resin; extracting into vacuum; adding isocyanate in the mixture at 20-50 deg.c; heating to 60-100 deg.c for 1-3h after radiating; producing endisocyanates prepolymer; dripping the modified silane coupling agent in the prepolymer for 1-3 h at 60-100 deg.c to produce the product.

Description

technical field [0001] The invention relates to a preparation method of an organosilicon coupling agent-modified polyurethane acrylate resin, in particular to a preparation method of an aminosilane-modified polyurethane acrylate resin. Background technique [0002] The silane coupling agent can form a strong and stable adhesive bond through the "molecular bridge" at the two weak adhesive interfaces, and connect two substances with different properties. The molecular structure of silane is generally expressed as follows: [0003] (RO) 3 Si-(CH 2 ) 3 -X [0004] R = alkyl (methyl, ethyl, etc.) [0005] X = organic functional group (mercapto, amino, epoxy, etc.) [0006] It can be seen from the above molecular structure that the silane coupling agent contains alkoxysilane that can undergo hydrolysis and silane polycondensation at a certain humidity, and the organic functional group X has certain compatibil...

Claims

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Application Information

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IPC IPC(8): C08G18/83C08G18/10C08G18/48C08G18/62C08K5/54
Inventor 修玉英王功海罗钟瑜
Owner SOUTH CHINA UNIV OF TECH
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