A kind of preparation method of bio-based acrylate anti-warping adhesive tape

A bio-based acrylate and acrylate technology, applied in adhesives, ester copolymer adhesives, film/sheet adhesives, etc., can solve problems such as high toxicity, prone to warping, and high pollution in the curing process , to achieve the effects of excellent bonding performance, high curing efficiency, and excellent warpage resistance

Active Publication Date: 2020-12-15
SUZHOU SHIHUA NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to provide a method for preparing bio-based acrylate tapes by using bio-based acrylate monomers and special cross-linking monomers as raw materials. Problems of edge warping, unsustainable raw material acquisition, high pollution and high toxicity in the curing process

Method used

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  • A kind of preparation method of bio-based acrylate anti-warping adhesive tape
  • A kind of preparation method of bio-based acrylate anti-warping adhesive tape
  • A kind of preparation method of bio-based acrylate anti-warping adhesive tape

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] First, add 100 g of 7-hydroxycoumarin into a 1000 mL three-necked flask, then add 70 g of methanol, and put it in a low temperature tank to cool to -20 o C, stirring for 10 min. Add the mixed solution of 120 g of acryloyl chloride and 70 g of dichloromethane into the constant pressure funnel, and slowly add it dropwise (6-7 d / s). Organic solvents. Thermally dissolve 300 g of anhydrous ether and methanol in a mixed solvent with a mass ratio of 1:2, obtain the filtrate after suction filtration, recrystallize at -30~-20°C, filter with suction, and dry in vacuum at room temperature for 48 h to obtain acrylate Modified 7-hydroxycoumarin.

[0032] Bio-based isobornyl methacrylate (brand: SARBIO6105) 50 g, bio-based isobornyl acrylate (brand: SARBIO5102) 35 g, bio-based tridecyl methacrylate (brand: SARBIO6101) 410 g, Bio-based heptadecanyl methacrylate (brand: SARBIO6104) 105 g, acrylate-modified 7-hydroxycoumarin 50 g, benzoyl peroxide 3 g, azobisisobutyronitrile 1.5 g, t...

Embodiment 2

[0036] First, add 100 g of 7-hydroxycoumarin into a 1000 mL three-necked flask, then add 70 g of methanol, and place it in a low temperature tank to cool to -20 o C, stirring for 10 min. Add the mixed solution of 120 g of methacryloyl chloride and 70 g of dichloromethane into the constant pressure funnel, add it dropwise slowly (6-7 d / s), continue to react at 25°C for 2 h after the dropwise addition, and spin off under reduced pressure residual organic solvents. Thermally dissolve 300 g of anhydrous ether and methanol in a mixed solvent with a mass ratio of 1:3, obtain the filtrate after suction filtration, recrystallize at -30~-20°C, suction filtration, and vacuum-dry at room temperature for 48 h to obtain methyl Acrylate-modified 7-hydroxycoumarin.

[0037] Bio-based isobornyl methacrylate (brand: SARBIO6105) 65 g, bio-based isobornyl acrylate (brand: SARBIO5102) 20 g, bio-based tridecyl methacrylate (brand: SARBIO6101) 450 g, bio Heptadecyl methacrylate (brand: SARBIO610...

Embodiment 3

[0041] First, 90 g of 7-hydroxy-4-methylcoumarin was added to a 1000 mL three-necked flask, and then 60 g of methanol was added, and placed in a low temperature tank to cool to -20 o C, stirring for 10 min. Add the mixed solution of 110 g of acryloyl chloride and 80 g of dichloromethane into the constant pressure funnel, add it dropwise slowly (6-7 d / s), continue to react at 20°C for 2 h after the dropwise addition, and spin off the remaining Organic solvents. Thermally dissolve 300 g of anhydrous ether and methanol in a mixed solvent with a mass ratio of 1:2, obtain the filtrate after suction filtration, recrystallize at -30~-20°C, filter with suction, and dry in vacuum at room temperature for 48 h to obtain acrylate Modified 7-hydroxy-4-methylcoumarin.

[0042] Bio-based isobornyl methacrylate (brand: SARBIO6105) 115 g, bio-based isobornyl acrylate (brand: SARBIO5102) 70 g, bio-based tridecyl methacrylate (brand: Terra C13-MA) ​​350 g g. Bio-based heptadecyl methacrylate ...

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Abstract

The invention provides a preparation method of a bio-based acrylate anti-warping adhesive tape, and relates to the field of bio-based adhesive tapes. The preparation method comprises the following steps: uniformly mixing 60-65 parts of a bio-based methacrylate monomer, 4.5-10 parts of an acrylate modified coumarin monomer, 30-40 parts of a solvent and 0.1-0.5 part of a thermal initiator, and carrying out a free radical polymerization reaction at 60-90 DEG C to prepare a bio-based methacrylate resin solution; and uniformly mixing 50-90 parts of the bio-based methacrylate resin solution and 10-50 parts of a bio-based tackifying resin, coating, drying, carrying out UV curing, and attaching to a release film or release paper to finally obtain the bio-based acrylate anti-warping adhesive tape.According to the invention, the bio-based carbon content of the adhesive layer of the bio-based acrylate adhesive tape is 80-95%; by using the carbon-carbon double bond functional group in coumarin asa photoreaction group, the UV curing preparation of a high-viscosity bio-based anti-warping adhesive tape is achieved; and the product has excellent warping resistance, and can be widely used in thefield of 3C electronic products.

Description

technical field [0001] The invention relates to the field of bio-based adhesive tapes, in particular to a preparation method of bio-based acrylate anti-warping adhesive tapes. Background technique [0002] Acrylic pressure-sensitive adhesives, also known as acrylic pressure-sensitive adhesives, are mainly copolymers obtained by copolymerizing acrylate monomers. With the development of science and technology and the demand for thinner and lighter 3C electronic products, acrylic pressure-sensitive adhesive has excellent weather resistance and high-strength adhesive performance, and its consumption demand is increasing day by day. At present, there are 6 methods for preparing various acrylate monomers: cyanohydrin method, ketene method, improved Reppe method, acrylonitrile hydrolysis method, propylene direct oxidation method, and esterification method. Its components all come from petroleum cracking products, the source cannot be sustainable, and it causes a lot of pollution a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J7/30C09J133/10C09J193/04C08F220/18C08F220/32
CPCC08F220/18C09J133/14C09J2433/00C09J2467/006C09J7/30C08L93/04
Inventor 顾正青崔志钢陈启峰周奎任
Owner SUZHOU SHIHUA NEW MATERIAL TECH
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