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Preparation method of improved degradable adhesive tape and adhesive tape

An improved, adhesive tape technology, applied in the directions of adhesives, adhesive types, ester copolymer adhesives, etc., can solve the problems of potential safety hazards, high cost, waste of resources, etc., and achieves a simple and easy preparation method, The effect of good followability and good degradation performance

Pending Publication Date: 2021-04-30
ANHUI MINGXUN NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Adhesive tapes currently used in the fields of medicine, electronics, electroplating, and material processing are obtained by coating a pressure-sensitive adhesive on a substrate with a certain surface free energy and then drying, curing, and anti-adhesive treatment. Sensitive adhesives are generally composed of polymethacrylates, rubbers, polyurethanes, etc. These raw materials are insoluble and infusible polymers, and it is difficult to remove them from the substrate by means of dissolution.
On the one hand, the adhesive tapes that use these raw materials as the adhesive layer are usually discarded after use, and the base material cannot be recycled, which not only wastes resources, but also causes environmental pollution; on the other hand, the consumption of adhesive tape products Large, scattered use occasions, because they are not used intensively, it is difficult to concentrate on processing, these adhesive tapes are mixed in social waste, which will inevitably cause serious environmental problems
However, the existing adhesive tape processing methods inevitably have the disadvantages of high cost, large limitations, potential safety hazards, and incomplete processing.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A. Preparation of Acrylic Hydroxypolycaprolactone Xylene Solution:

[0038] A1. Add 1.4kg of aluminum triisopropoxide (catalyst) into 24kg of xylene, stir, let it stand for 60~80min, filter, adjust the concentration, and obtain a solution of aluminum triisopropoxide in xylene with a concentration of 5%. ;

[0039] A2. Under nitrogen, mix 47.1kg of xylene, 70kg of ε-CL (caprolactone), and 4.25kg of hydroxyethyl acrylate, raise the temperature to 140~150℃, and reflux for 30~50min;

[0040]A3. Under the condition of nitrogen, add all the triisopropoxyaluminum xylene solution prepared in step A1 to the mixed solution in step A2, drop for 20~30min, and reflux at 135~145°C 5 ~ 6h, make acrylate hydroxypolycaprolactone xylene solution;

[0041] B. Preparation of polyacrylate hydroxypolycaprolactone:

[0042] B1. Add 0.36 kg of 80% water-containing BPO (the first initiator) into 6 kg of xylene, stir, and let it stand for 60-80 minutes. After the solution is layered and clear...

Embodiment 2

[0062] A. Preparation of Acrylic Hydroxypolycaprolactone Xylene Solution:

[0063] A1. Add 1.4kg of aluminum triisopropoxide (catalyst) into 24kg of xylene, stir, let it stand for 60~80min, filter, adjust the concentration, and obtain a solution of aluminum triisopropoxide in xylene with a concentration of 5%. ;

[0064] A2. Under nitrogen, mix 47.1kg of xylene, 70kg of ε-CL (caprolactone), and 4.25kg of hydroxyethyl acrylate, raise the temperature to 140~150℃, and reflux for 30~50min;

[0065] A3. Under the condition of nitrogen, add all the triisopropoxyaluminum xylene solution prepared in step A1 to the mixed solution in step A2, drop for 20~30min, and reflux at 135~145°C 5 ~ 6h, make acrylate hydroxypolycaprolactone xylene solution;

[0066] B. Preparation of polyacrylate hydroxypolycaprolactone:

[0067] B1. Add 0.36 kg of 80% water-containing BPO (the first initiator) into 6 kg of xylene, stir, and let it stand for 60-80 minutes. After the solution is layered and clea...

Embodiment 3

[0087] A. Preparation of Acrylic Hydroxypolycaprolactone Xylene Solution:

[0088] A1. Add 1.4kg of aluminum triisopropoxide (catalyst) into 24kg of xylene, stir, let it stand for 60~80min, filter, adjust the concentration, and obtain a solution of aluminum triisopropoxide in xylene with a concentration of 5%. ;

[0089] A2. Under nitrogen, mix 47.1kg of xylene, 70kg of ε-CL (caprolactone), and 4.25kg of hydroxyethyl acrylate, raise the temperature to 140~150℃, and reflux for 30~50min;

[0090] A3. Under the condition of nitrogen, add all the triisopropoxyaluminum xylene solution prepared in step A1 to the mixed solution in step A2, drop for 20~30min, and reflux at 135~145°C 5 ~ 6h, make acrylate hydroxypolycaprolactone xylene solution;

[0091] B. Preparation of polyacrylate hydroxypolycaprolactone:

[0092] B1. Add 0.36 kg of 80% water-containing BPO (the first initiator) into 6 kg of xylene, stir, and let it stand for 60-80 minutes. After the solution is layered and clea...

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PUM

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Abstract

The invention relates to a preparation method of an improved degradable adhesive tape and the adhesive tape, and the preparation process comprises the following steps: firstly, preparing an acrylic acid hydroxyl polycaprolactone xylene solution, preparing polyacrylic acid hydroxyl polycaprolactone on the basis of the acrylic acid hydroxyl polycaprolactone xylene solution, and secondly, synthesizing a polyacrylate pressure-sensitive adhesive by taking acrylic acid and ester monomers thereof as main raw materials; and preparing a coating liquid by using the pressure-sensitive adhesive, and coating to obtain the improved degradable adhesive tape. The preparation method disclosed by the invention is simple and feasible, and has good edge bearing performance compared with a traditional adhesive tape preparation process; and the prepared degradable pressure-sensitive adhesive and adhesive tape have good degradation performance under natural conditions.

Description

technical field [0001] The invention relates to the field of pressure-sensitive adhesive products, in particular to a method for preparing an improved degradable adhesive tape and the adhesive tape. Background technique [0002] Adhesive tapes currently used in the fields of medicine, electronics, electroplating, and material processing are obtained by coating a pressure-sensitive adhesive on a substrate with a certain surface free energy and then drying, curing, and anti-adhesive treatment. Sensitive adhesives are generally composed of polymethacrylates, rubbers, polyurethanes, etc. These raw materials are insoluble and infusible polymers, and it is difficult to remove them from the substrate by means of dissolution. On the one hand, the adhesive tapes using these raw materials as the adhesive layer are usually discarded after use, and the base material cannot be recycled, which not only wastes resources, but also causes environmental pollution; on the other hand, the consu...

Claims

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Application Information

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IPC IPC(8): C09J7/38C09J7/25C09J7/24C09J7/21C09J133/08C09J167/06C08F220/14C08F220/18C08F220/06C08F220/20
CPCC09J7/385C09J7/255C09J7/243C09J7/21C09J133/066C08F220/14C09J2400/283C09J2423/106C09J2467/006C08L67/06C08F220/1802C08F220/1804C08F220/06C08F220/20
Inventor 潘成诚汪洋谢璐生雷芬
Owner ANHUI MINGXUN NEW MATERIAL TECH
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