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Preparation method of improved degradable adhesive tape and adhesive tape

An adhesive tape, pressure-sensitive adhesive technology, applied in the direction of adhesives, adhesive types, graft polymer adhesives, etc., can solve the problems of high cost, potential safety hazards, waste of resources, etc. Good performance, simple and easy preparation method, 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

[0032] A. Preparation of modified polycaprolactone xylene solution:

[0033] A1. Add 1.4kg of triisopropoxyaluminum (catalyst) into 24kg of xylene, stir, let stand for 60~80min, filter, adjust the concentration, and obtain 25kg of triisopropoxidealuminum diisopropoxide with a concentration of 5%. Toluene solution;

[0034] A2. Under nitrogen conditions, mix 47.1kg of xylene, 70kg of ε-CL (caprolactone), and 4.25kg of hydroxyethyl acrylate (the first initiator), heat up to 140~150°C, and reflux for 30 ~50min;

[0035] A3. Under the condition of nitrogen flow, 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, the modified hydroxypolycaprolactone acrylate xylene solution of about 180kg was obtained;

[0036] B. Synthesis of improved degradable pressure-sensitive adhesives:

[0037] B1. Add 0.2kg of AIBN (the second initiator) into 7kg of ethyl acetate (organic solvent), stir...

Embodiment 2

[0053] A. Preparation of modified polycaprolactone xylene solution:

[0054] A1. Add 1.4kg of triisopropoxyaluminum (catalyst) into 24kg of xylene, stir, let stand for 60~80min, filter, adjust the concentration, and obtain 25kg of triisopropoxidealuminum diisopropoxide with a concentration of 5%. Toluene solution;

[0055] A2. Under nitrogen conditions, mix 47.1kg of xylene, 70kg of ε-CL (caprolactone), and 4.25kg of hydroxyethyl acrylate (the first initiator), heat up to 140~150°C, and reflux for 30 ~50min;

[0056] A3. Add all the triisopropoxyaluminum xylene solution prepared in step A1 to the mixed solution in step A2 under the condition of nitrogen flow, dropwise for 20~30min, and reflux at 135~145°C 5~6h, the modified hydroxypolycaprolactone acrylate xylene solution of about 180kg was obtained;

[0057] B. Synthesis of improved degradable pressure-sensitive adhesives:

[0058] B1. Add 0.2kg of AIBN (second initiator) into 7kg of ethyl acetate (organic solvent), stir,...

Embodiment 3

[0074] A. Preparation of modified polycaprolactone xylene solution:

[0075] A1. Add 1.4kg of triisopropoxyaluminum (catalyst) into 24kg of xylene, stir, let stand for 60~80min, filter, adjust the concentration, and obtain 25kg of triisopropoxidealuminum diisopropoxide with a concentration of 5%. Toluene solution;

[0076] A2. Under nitrogen conditions, mix 47.1kg of xylene, 70kg of ε-CL (caprolactone), and 4.25kg of hydroxyethyl acrylate (the first initiator), heat up to 140~150°C, and reflux for 30 ~50min;

[0077] A3. Add all the triisopropoxyaluminum xylene solution prepared in step A1 to the mixed solution in step A2 under the condition of nitrogen flow, dropwise for 20~30min, and reflux at 135~145°C 5~6h, the modified hydroxypolycaprolactone acrylate xylene solution of about 180kg was obtained;

[0078] B. Synthesis of improved degradable pressure-sensitive adhesives:

[0079] B1. Add 0.2kg of AIBN (second initiator) into 7kg of ethyl acetate (organic solvent), stir,...

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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: preparing a modified polycaprolactone xylene solution, and synthesizing an improved degradable pressure-sensitive adhesive by using acrylic acid and ester monomers thereof and modified polycaprolactone components; and preparing a coating liquid from the improved degradable pressure-sensitive adhesive, and coating to obtain the 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 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 preparation method of 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 cons...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/25C09J7/24C09J7/38C09J7/21C09J151/08C08F283/01C08F220/14C08F220/18C08F220/06C08G63/08
CPCC09J7/255C09J7/243C09J7/38C09J7/21C09J151/08C08F283/01C08G63/08C09J2467/006C09J2451/00C09J2423/106C09J2400/283C08F220/14C08F220/1802C08F220/1804C08F220/06
Inventor 潘成诚汪洋谢璐生雷芬
Owner ANHUI MINGXUN NEW MATERIAL TECH