Polyester-based protective film for preventing oligomer preparation and manufacturing method thereof

A polyester-based protective film and a production method technology, applied in the direction of film/flake adhesive, coating, adhesive, etc., can solve the problems of fog, peeling, veneer bubbles, etc., and achieve good process durability, The effect of strong blocking ability and strong operability

Inactive Publication Date: 2017-02-01
ANHUI MINGXUN NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the polyester base material that constitutes the polyester-based protective film will inevitably contain a certain amount of small amounts of small amounts of cellulose in the polyester base material due to the reversibility of the chemical reaction during the synthesis of the raw material polyethylene terephthalate. Molecular oligomers; at the same time, polyester substrates will also produce oligomers to varying degrees during post-treatment processes such as film making, stretching, shaping, and coating adhesives, and the oligomers will migrate and gather on the polyester film The surface and the glued surface, and after the protective film and the pasted object are subjected to constant temperature and humidity aging and other post-treatments, the fogging phenomenon of the protective film and the pasted object is more serious
Not only will it affect the cleanliness and optical performance of the protective film and the substrate, but it will also pollute the surface of the substrate. At the same time, it will also cause a decrease in the adhesive ability of the protective film, bubbles, clouds, and the possibility of peeling off the laminated surface. It is difficult to meet the requirements of high-end glass. film needs

Method used

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  • Polyester-based protective film for preventing oligomer preparation and manufacturing method thereof
  • Polyester-based protective film for preventing oligomer preparation and manufacturing method thereof
  • Polyester-based protective film for preventing oligomer preparation and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0089] A kind of manufacture method that prevents the polyester-based protective film that oligomer produces, comprises the steps:

[0090] 1. Preparation of raw materials for sealing agent: 4.0Kg of acrylic acid, 3.0Kg of hydroxyethyl acrylate, 21.0Kg of methyl methacrylate, 12.0Kg of methyl acrylate, 57.0Kg of ethyl acetate, 3.0Kg of toluene, 160.0 g of BPO with 25% water;

[0091] 2. Refining and configuration of initiator:

[0092] A. 160.0g of BPO containing 25% moisture content is dissolved in 3.0Kg of toluene, and the resulting solution is left standing until the solution turns from light white to clear and transparent;

[0093] B. Carefully remove the water and a little other impurities in the lower layer of the solution;

[0094] C. Divide the obtained supernatant into three equal parts to obtain the addition solution 1, the addition solution 2 and the addition solution 3.

[0095] 3. Synthesis of sealing agent:

[0096] A. Add 4.0Kg of acrylic acid, 3.0Kg of hydr...

Embodiment 2

[0129] Embodiment 2. a kind of preparation method that prevents the polyester-based protective film that oligomer produces, comprises the steps:

[0130] 1. Preparation of raw materials for sealing agent: 3.5Kg of acrylic acid, 4.5Kg of hydroxyethyl acrylate, 19.0Kg of methyl methacrylate, 11.0Kg of methyl acrylate, 2.0Kg of acrylonitrile, 60.0Kg of butanone, 200.0 g of azobisisobutyronitrile, 2000ml of 95% ethanol;

[0131] 2. Refining and configuration of initiator:

[0132] A. Put 2000ml of 95% ethanol in a glass container, heat it in a water bath to about 70°C; quickly add 200.0g of azobisisobutylcyanide into the ethanol solution, stir quickly until it is completely dissolved, and quickly filter the hot solution , After cooling the glass container holding the filtrate with water, put it in the refrigerator for crystallization, and the crystallization obtained is the refined azobisisobutylcyanide initiator. Refined azobisisobutyrocyanide should be stored at low temperatur...

Embodiment 3

[0165] Embodiment 3. a kind of preparation method that prevents the polyester-based protective film that oligomer produces, comprises the steps:

[0166] 1. Preparation of raw materials for sealing agent: 3.5Kg of acrylic acid, 3.5Kg of hydroxypropyl acrylate, 25.0Kg of methyl methacrylate, 8.0Kg of methyl acrylate, 57.0Kg of ethyl acetate, 3.0Kg of toluene, 160.0 g of BPO containing 25% water;

[0167] 2. Refining and configuration of initiator:

[0168]A. 160.0g of BPO containing 25% moisture content is dissolved in 3.0Kg of toluene, and the resulting solution is left standing until the solution turns from light white to clear and transparent;

[0169] B. Carefully remove the water and a little other impurities in the lower layer of the solution;

[0170] C. Divide the obtained supernatant into three equal parts to obtain the addition solution 1, the addition solution 2 and the addition solution 3.

[0171] 3. Synthesis of sealing agent:

[0172] A. Add 3.5Kg of acrylic ...

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Abstract

The invention relates to a polyester-based protective film for preventing oligomer preparation and a manufacturing method thereof. The polyester-based protective film comprises a multi-layer composite polyester-based base material and a pressure-sensitive adhesive coating coated on the surface of the composite base material; a crosslinking polyacrylate sealing agent upper surface layer and a crosslinking polyacrylate sealing agent lower surface layer are coated on the upper surface and the lower surface of the multi-layer composite polyester-based base material respectively. The manufacturing method includes the following steps that 1, a crosslinking polyacrylate sealing agent is synthesized; 2, the multi-layer composite polyester-based base material is prepared; 3, the polyester-based protective film for preventing oligomer preparation is prepared. The fogging problem caused by oligomer emigration in the polyester-based base material in the storage, processing and using processes of a conventional protective film is solved, when long-term exposure to sunlight, constant-temperature constant-humidity artificial aging and heating ageing are carried out on the polyester-based protective film for preventing oligomer preparation, the fogging phenomenon on the film face due to oligomer emigration is avoided, and use requirement of high-end glass films is ensured.

Description

technical field [0001] The invention relates to the field of protective films, in particular to a polyester-based protective film for preventing the generation of oligomers and a manufacturing method thereof. Background technique [0002] Polyester-based protective films are widely used in many fields of industry because of their good mechanical properties, electrical insulation properties, optical properties, heat and cold resistance, etc. Among them, the polyester-based protective film used for touch screen glass film and automobile glass film has particularly high requirements on optical properties, especially transparency and light transmittance. However, the polyester base material that constitutes the polyester-based protective film will inevitably contain a certain amount of small amounts of small amounts of the polyester base material due to the reversibility of the chemical reaction during the synthesis of the raw material polyethylene terephthalate. Molecular olig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/02C09D133/12C08J7/04C08F220/14C08F220/06C08F220/28C08L67/02
CPCC08F220/14C08J7/04C08J2367/02C08J2433/12C09D133/12C09J2301/302C09J2433/003C09J2467/006C08F220/06C08F220/281C08F220/46
Inventor 潘成诚吴凌峰
Owner ANHUI MINGXUN NEW MATERIAL TECH
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