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Preparation method of combined phosphorus type flame-retardant acrylic ester pressure-sensitive adhesive

A technology of acrylate and pressure-sensitive adhesives, applied in the direction of adhesive types, adhesives, ester copolymer adhesives, etc., to achieve the effect of solving the technical bottleneck of balance, improving flame retardancy and stability, and good dispersion

Inactive Publication Date: 2011-09-21
上海奇想青晨新材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method eliminates the pollution of halogenated flame retardants to the environment, and at the same time, the obtained flame-retardant pressure-sensitive adhesive is stable, and solves the problem of balance between pressure sensitivity and flame retardancy.

Method used

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  • Preparation method of combined phosphorus type flame-retardant acrylic ester pressure-sensitive adhesive
  • Preparation method of combined phosphorus type flame-retardant acrylic ester pressure-sensitive adhesive
  • Preparation method of combined phosphorus type flame-retardant acrylic ester pressure-sensitive adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1 (Phosphorus-containing monomer PAM-300 accounts for 10%)

[0025] Step a: in N 2 Under protection, the design solid content is 40%, and the glass transition temperature is -61℃. Add 28.0gBA, 7.0g2-EHA, 12.7gVAc, 2.1gHEA, 1.1gAA, and 5.0g phosphorous monomer PAM-300 to 15g sequentially In a mixed solvent of xylene and 100 g of ethyl acetate, stir to make the mixture uniform and increase the temperature.

[0026] Step b: Add 0.4g of initiator BPO to 20g of ethyl acetate solvent and stir to dissolve and mix uniformly. When the temperature is raised to the reflux temperature of 78°C, the initiator is added dropwise. The dropwise addition is completed in about 0.5h, and the constant temperature reaction is 1.0h. Cool down to 75°C and react for 1.5h.

[0027] Step c: Add the remaining monomers: 28.0g BA, 7.0g 2-EHA, 11.0g VAc, 2.1g HEA, 1.0gAA, and 5.0gPAM-300 to the reaction solution in sequence, and raise the temperature for 10min to about 78℃, React for 0.5h after the...

Embodiment 2

[0034] Example 2 (Phosphorus-containing monomer PAM-300 accounts for 10%, and ammonium polyphosphate APP accounts for different proportions)

[0035] Step a: in N 2 Under protection, the design solid content is 40%, and the glass transition temperature is -61℃. Add 28.0gBA, 7.0g2-EHA, 12.7gVAc, 2.1gHEA, 1.1gAA, and 5.0g phosphorous monomer PAM-300 to 15g sequentially In a mixed solvent of xylene and 100 g of ethyl acetate, stir to make the mixture uniform and increase the temperature.

[0036] Step b: Add 0.4g of initiator BPO to 20g of ethyl acetate solvent and stir to dissolve and mix uniformly. When the temperature is raised to the reflux temperature of 78°C, the initiator is added dropwise. The dropwise addition is completed in about 0.5h, and the constant temperature reaction is 1.0h. Cool down to 75°C and react for 1.5h.

[0037] Step c: Add the remaining monomers: 28.0g BA, 7.0g 2-EHA, 11.0g VAc, 2.1gHEA, 1.0g AA, and 5.0gPAM-300 to the reaction solution in sequence, and rais...

Embodiment 3

[0045] Example 3 (Phosphorus-containing monomer PAM-300 accounts for 20%)

[0046] Step a: in N 2 Under protection, the design solid content is 40%, the glass transition temperature is -60℃, and 23.3gBA, 7.0g2-EHA, 12.7gVAc, 2.1gHEA, 1.1gAA, and 10.0g phosphorous monomer PAM-300 are added to 15g in turn In a mixed solvent of xylene and 100 g of ethyl acetate, stir to make the mixture uniform and increase the temperature.

[0047] Step b: Add 0.4g of initiator BPO to 20g of ethyl acetate solvent and stir to dissolve and mix uniformly. When the temperature is raised to the reflux temperature of 78°C, the initiator is added dropwise. The dropwise addition is completed in about 0.5h, and the constant temperature reaction is 1.0h. Cool down to 75°C and react for 1.5h.

[0048] Step c: Add the remaining monomers: 23.0g BA, 7.0g 2-EHA, 11.0g VAc, 2.1g HEA, 1.0g AA, and 10.0gPAM-300 to the reaction solution in sequence, and increase the temperature by 10min to 78℃ About 0.5h after the temp...

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Abstract

The invention discloses a preparation method of a combined phosphorus type flame-retardant acrylic ester pressure-sensitive adhesive. The preparation method comprises the following steps of: polymerizing phosphorus-containing acrylic ester with fire resistance and a general acrylic ester monomer by a radical solution polymerization process under the conditions of normal temperature of 70 to 85 DEG C, nitrogen atmosphere as protective gas, peroxide as an initiator and a mixed solvent as a solvent; preparing a solution type adhesive material of an acrylic ester copolymer with intrinsic fire resistance by a multi-step polymerization process; and blending the solution type adhesive material and lipophilic ammonium polyphosphate slurry to obtain the flame-retardant pressure-sensitive adhesive with excellent pressure sensitivity and fire resistance. The preparation method is environment-friendly, non-toxic and simple in process. By the method, the intrinsic fire resistance is improved; influence on the pressure sensitivity of the pressure-sensitive adhesive caused by postaddition of the flame retardant is reduced; technical bottleneck of balance between the fire resistance and the pressure sensitivity is broken through; and functions of the pressure-sensitive adhesive and adhesive tape products in various fields are widened.

Description

Technical field [0001] The invention relates to the technical field of adhesive preparation, in particular to a method for preparing a phosphorous-type acrylate flame-retardant pressure-sensitive adhesive. Background technique [0002] Acrylic pressure-sensitive adhesives not only have gloss and color retention, strong durability, and no hydrogen halide corrosive gas is released during combustion, so the amount of acrylic pressure-sensitive adhesives accounts for the total consumption of pressure-sensitive adhesives More than 90%, the annual consumption is 800,000 tons. At present, many new functional pressure-sensitive adhesive products using acrylate copolymer as the adhesive have been developed and applied in many fields. However, the common problems of currently commercially available flame-retardant acrylic pressure-sensitive adhesives are: [0003] (1) Acrylate copolymer is a flammable polymer composed of three elements of hydrocarbons, hydrogen and oxygen, and is restricte...

Claims

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Application Information

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IPC IPC(8): C09J7/02C09J133/08C09J9/00
Inventor 刘国富赵永旗夏宇正戚向东
Owner 上海奇想青晨新材料科技股份有限公司
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