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 film, achieve excellent bonding performance, easy to reuse 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

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A. Preparation of modified polycaprolactone xylene solution:

[0041] 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;

[0042] A2. Under nitrogen conditions, mix 47.1kg of xylene, 70kg of ε-CL (caprolactone), and 4.25kg of hydroxyethyl methacrylate (the first initiator), and heat up to 135~145°C. Reflux for 30~50min;

[0043] 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;

[0044] B. Preparation of poly(meth)acrylate hydroxypolycaprolactone:

[0045] B1. Add 0.36 kg of 80% water-containing BPO (second initiator) into 6 kg of xylene, stir, and let it stand for 60-80 minutes. ...

Embodiment 2

[0065] A. Preparation of modified polycaprolactone xylene solution:

[0066] 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;

[0067] A2. Under nitrogen conditions, mix 47.1kg of xylene, 70kg of ε-CL (caprolactone), and 4.76kg of hydroxyethyl methacrylate (the first initiator), and raise the temperature to 135~145°C. Reflux for 30~50min;

[0068] 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 methacrylate hydroxypolycaprolactone xylene solution;

[0069] B. Preparation of poly(meth)acrylate hydroxypolycaprolactone:

[0070] B1. Add 0.36 kg of 80% water-containing BPO (second initiator) into 6 kg of xylene, stir, and let it stand for 60-80...

Embodiment 3

[0090] A. Preparation of modified polycaprolactone xylene solution:

[0091] 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;

[0092] A2. Under nitrogen conditions, mix 47.1kg of xylene, 70kg of ε-CL (polycaprolactone), and 4.76kg of hydroxyethyl methacrylate (the first initiator), and raise the temperature to 135~145°C , reflux for 30~50min;

[0093] 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;

[0094] B. Preparation of poly(meth)acrylate hydroxypolycaprolactone:

[0095] B1. Add 0.36 kg of 80% water-containing BPO (second initiator) into 6 kg of xylene, stir, and let it stand ...

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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. The preparation method comprises the following steps: preparing a modified polycaprolactone xylene solution and preparing poly(methyl)hydroxypolycaprolactone acrylate on the basis of the modified polycaprolactone xylene solution; and synthesizing poly(methyl)acrylate pressure-sensitive adhesive by taking poly(methyl)hydroxypolycaprolactone acrylate and a (methyl)acrylate monomer as raw materials, preparing and coating the coating liquid from the adhesive, and obtaining the protective film. 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 preparation method and a protective film of an improved adhesive and a polyolefin base material that can be co-granulated. 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. However, ...

Claims

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Application Information

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IPC IPC(8): C09J7/38C09J133/08C09J151/08C09J151/00C09J7/24C08F283/02C08G63/08C08F220/18C08F220/20C08F220/06C08F220/14C08F255/02
CPCC09J7/385C09J133/14C09J151/003C09J7/243C08F283/02C08G63/08C08F220/1804C08F255/026C09J2423/046C08L2205/02C09J2423/106C08F220/20C08F220/1808C08F220/06C08F220/14C08L51/08
Inventor 潘成诚汪洋谢璐生雷芬
Owner ANHUI MINGXUN NEW MATERIAL TECH
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