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A kind of etch-resistant protective film

A protective film and anti-etching technology, applied in the direction of film/sheet adhesive, non-polymer adhesive additive, adhesive type, etc., can solve the problem of poor bonding effect of OGS panel and soft polyester film Poor performance, scrapped OGS panels, etc., to achieve excellent level gap filling, stable performance, and accelerated cross-linking speed

Active Publication Date: 2018-10-12
NINGBO SOKEN CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The substrates mentioned in the above-mentioned patent documents are basically PET or composite films of PET and PE, etc. The polyester film has poor flexibility, so the protective film using it as the substrate has the problem of poor fillability of steps, and it is difficult to correct unevenness during use. The bonding effect of the OGS panel is not good, which will easily lead to the scrapping of the OGS panel

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] To prepare acrylate adhesive:

[0028] 70g of isooctyl acrylate, 25g of butyl acrylate, 4.85g of acrylic acid, 0.15g of 2-hydroxyethyl acrylate were added to the reactor, dissolved in 80g of toluene and 20g of ethyl acetate, and stirred at 300 rpm for 1 hour under nitrogen protection , and the temperature was raised to 85°C, then 0.05g of azobisisobutyronitrile polymerization initiator was added to start the polymerization reaction, and 0.04g of azobisisobutyronitrile polymerization initiator was added after 4 hours, and the reaction was continued for 3 hours. A copolymer with a molecular weight of about 450,000 is added with 50 g of ethyl acetate as a diluting solvent, and an adhesive with a viscosity of 100P is obtained after cooling.

[0029] Take 100g of adhesive, add 1g of hexamethylene diisocyanate, stir evenly, add 0.1g of aluminum acetylacetonate complex, and mix evenly; the first adhesive layer is coated on a Shore hardness of 80A, On the PVC calendered film w...

Embodiment 2

[0032] To prepare acrylate adhesive:

[0033] Add 60g isooctyl acrylate, 35g butyl acrylate, 4.8g acrylic acid, 0.2g 2-hydroxyethyl acrylate into the reactor, dissolve in 80g toluene and 20g ethyl acetate, stir at 250rpm for 1 hour under nitrogen protection , and the temperature was raised to 75°C, then 0.03 g of azobisisobutyronitrile polymerization initiator was added to start the polymerization reaction, and 0.03 g of azobisisobutyronitrile polymerization initiator was added after 3 hours, and the reaction was continued for 2 hours. A copolymer with a molecular weight of about 1.5 million was added with 60 g of toluene as a diluting solvent, and after cooling, an adhesive with a viscosity of 130P was obtained.

[0034] Take 100g of acrylate-based adhesive, add 1g of xylylene diisocyanate, stir evenly, add 0.1g of nickel acetylacetonate to the mixture, and mix evenly; On the polyvinyl chloride calendered film with a surface tension of 54 dynes, the thickness of the adhesive...

Embodiment 3

[0037] To prepare acrylate adhesive:

[0038] Add 60g isooctyl acrylate, 35g butyl acrylate, 4.8g acrylic acid, 0.2g 2-hydroxyethyl acrylate into the reactor, dissolve in 80g toluene and 20g ethyl acetate, stir at 250rpm for 1 hour under nitrogen protection , and the temperature was raised to 75°C, then 0.03 g of azobisisobutyronitrile polymerization initiator was added to start the polymerization reaction, and 0.03 g of azobisisobutyronitrile polymerization initiator was added after 3 hours, and the reaction was continued for 2 hours. A copolymer with a molecular weight of about 1.5 million is then added with 50 g of toluene and 10 g of ethyl acetate as a diluting solvent, and an adhesive with a viscosity of 130P is obtained after cooling.

[0039] Take 100g of acrylate-based adhesive, add 1g of toluene diisocyanate, and after stirring evenly, add 0.1g of cobalt acetylacetonate to the mixture, and mix evenly; the first adhesive layer. The substrate is composed of a PE film ...

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Abstract

The invention relates to an anti-etching protection film, comprising a base material and a first glue layer coated on the base material. The protection film is characterized in that the base material is a PVC calendered film with a shore hardness of 70-90A, and the thickness of the base material is 80-300mum; the thickness of the first glue layer is 5-30mum, and the first glue layer comprises 100 parts by mass of acrylate binder, 0.5-5 parts by mass of crosslinking agent and 0.05-0.5 part by mass of metallo-chelate, wherein the acrylate binder has weight average molecular weight of 450000-1500000 and viscosity of 100-130P. The protection film has excellent section difference filling property and can effectively prevent an OGS panel with section difference on the surface from etching and the glue layer is good in film-forming property and stable.

Description

technical field [0001] The present invention relates to an etching-resistant protective film. Background technique [0002] OGS is the abbreviation of One Glass Solution, which is a technology that directly forms an ITO conductive film and a sensor on a piece of glass. It is a new solution for touch panels. Compared with the traditional G / G and G / F solutions, it has the advantages of simple structure, light weight, thinness and good light transmittance, saving a glass substrate and laminating process, reducing production costs and improving product qualification rate. OGS has a low cost and a thinner thickness, which is in line with the interests of smartphone product and touch panel module manufacturers. However, the biggest problem of OGS at this stage is that the strength of the glass is insufficient, which makes it fragile when dropped. Faced with this problem, OGS developers have developed physical and chemical strength processing methods to improve the strength of OGS...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J7/30C09J133/08C09J11/06C08F220/18C08F220/06
CPCC08F220/18C08F220/1804C08F220/1808C08K5/56C09J7/243C09J7/245C09J11/06C09J133/08C08F220/06
Inventor 周文燕谢琼颖
Owner NINGBO SOKEN CHEM
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