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Preparation method of improved adhesive and polyolefin base material co-pelletizable protective film and protective film

A polyolefin base material, an improved technology, applied in the direction of film/sheet adhesives, adhesives, adhesive types, etc., can solve the problem of unstable viscosity of protective films, and achieve excellent adhesion performance and easy re-processing. The effect of good utilization and durability

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

However, due to differences in chemical structure and molecular surface energy between PCL and polymethacrylate pressure-sensitive polymers, it is also easy to cause the problem of unstable viscosity of the coated protective film.
[0005] Therefore, it is necessary to solve the problem of compatibility and stability of PCL and polymethacrylate pressure-sensitive polymers, thereby solving the problem of co-extrusion granulation of polymethacrylate pressure-sensitive polymers and polyolefin substrates

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A. Preparation of modified polycaprolactone xylene solution:

[0037] A1. Add 1.4kg of (catalyst) into 24kg of xylene, stir, let stand for 60~90min, filter, adjust the concentration, and obtain 25kg of 5% triisopropoxyaluminum xylene solution;

[0038] A2. Under nitrogen conditions, mix 47.1kg of xylene, 70kg of ε-CL (caprolactone), and 4.25kg of hydroxyethyl acrylate (the first initiator), raise the temperature to 135~145°C, and reflux for 30 ~60min;

[0039] 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 (meth)acrylic acid hydroxypolycaprolactone xylene solution;

[0040] B. Synthesis of improved poly(meth)acrylate pressure-sensitive adhesives:

[0041] B1. Add 0.24kg of 80% water-containing BPO (second initiator) into 5kg of xylene, stir, and let it stand for 60-80min. After the solution is layered and clear, remove the ...

Embodiment 2

[0057] A. Preparation of modified polycaprolactone xylene solution:

[0058] A1. Add 1.4kg of (catalyst) into 24kg of xylene, stir, let stand for 60~90min, filter, adjust the concentration, and obtain 25kg of 5% triisopropoxyaluminum xylene solution;

[0059] A2. Under nitrogen conditions, mix 47.1kg of xylene, 70kg of ε-CL (caprolactone), and 4.25kg of (meth)hydroxyethyl acrylate (the first initiator), and heat up to 135~145 ℃, reflux for 30~60min;

[0060] 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;

[0061] B. Synthesis of improved poly(meth)acrylate pressure-sensitive adhesives:

[0062] B1. Add 0.24kg of 80% water-containing BPO (second initiator) into 5kg of xylene, stir, and let it stand for 60-80min. After the solution is layered and clear, remove the layered water a...

Embodiment 3

[0078] A. Preparation of modified polycaprolactone xylene solution:

[0079] A1. Add 1.4kg of (catalyst) into 24kg of xylene, stir, let stand for 60~90min, filter, adjust the concentration, and obtain 25kg of 5% triisopropoxyaluminum xylene solution;

[0080]A2. Under nitrogen conditions, mix 47.1kg of xylene, 70kg of ε-CL (caprolactone), and 4.25kg of hydroxyethyl acrylate (the first initiator), raise the temperature to 135~145°C, and reflux for 30 ~60min;

[0081] 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 (meth)acrylic acid hydroxypolycaprolactone xylene solution;

[0082] B. Synthesis of improved poly(meth)acrylate pressure-sensitive adhesives:

[0083] B1. Add 0.24kg of 80% water-containing BPO (second initiator) into 5kg of xylene, stir, and let it stand for 60-80min. After the solution is layered and clear, remove the...

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PUM

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Abstract

The invention relates to a preparation method of an improved adhesive and polyolefin base material co-pelletizable protective film and the protective film, and the preparation process comprises the following steps: preparing a modified polycaprolactone xylene solution, and synthesizing an improved poly(methyl)acrylate pressure-sensitive adhesive by taking the modified polycaprolactone xylene solution and a (methyl)acrylate monomer as raw materials; and preparing a coating liquid of the pressure-sensitive adhesive and coating the pressure-sensitive adhesive. The pressure-sensitive adhesive and the protective film prepared by the invention are excellent in adhesive property; after the protective film is used, novel plastic particles capable of being recycled can be obtained through direct extrusion granulation, and subsequent recycling is facilitated; and the preparation method is simple and easy to implement, and has good edge bearing performance compared with the traditional protective film preparation process.

Description

technical field [0001] The invention relates to the field of pressure-sensitive adhesives, in particular to a method for preparing an improved adhesive and a polyolefin base material co-granulation protective film and the protective film. Background technique [0002] At present, the protective film used in the fields of medicine, electronics, electroplating, material processing, etc. is obtained by coating the pressure-sensitive adhesive on the substrate with a certain surface free energy and then drying, curing and anti-adhesive treatment. 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. The protective film using these raw materials as the adhesive layer is usually discarded after use, and its base material cannot be recycled, which not only wastes resources, but also causes environmental pollution. How...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/38C09J7/24C09J151/08C09J151/06C08F283/01C08F220/18C08F220/20C08F220/06C08F220/14C08F291/06
CPCC09J7/385C09J7/243C09J151/08C09J151/06C08F283/01C08F255/026C09J2423/046C09J2423/166C08F220/1808C08F220/1804C08F220/20C08F220/06C08F220/14
Inventor 潘成诚汪洋谢璐生雷芬
Owner ANHUI MINGXUN NEW MATERIAL TECH
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