Preparation method of ultraviolet light polymerization fluorosilicone release film for optical display

A technology of optical display and ultraviolet light, which is applied in the direction of film/sheet adhesive, film/sheet release liner, coating, etc., can solve the problems of organic solvent damage to adhesion and residual adhesion rate, etc. High light rate and residual adhesion rate, low haze, and light release force

Active Publication Date: 2018-10-19
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation method of the release film is simple, which can solve the hazards of organic solvents and the defects of low adhesion and residual adhesion in the coating and curing process of the existing fluorosilicone release film, improve light transmittance, and reduce haze

Method used

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  • Preparation method of ultraviolet light polymerization fluorosilicone release film for optical display
  • Preparation method of ultraviolet light polymerization fluorosilicone release film for optical display

Examples

Experimental program
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Effect test

Embodiment 1

[0024] The preparation method of the ultraviolet light-cured fluorosilicon release film for optical display, the steps are as follows:

[0025] At room temperature, 31.41 g of undecafluorohexanoic acid, 9.11 g of 2-amino-1,3-propanediol and 104.30 g of benzotriazol-1-yl-oxytripyrrolidinylphosphonium hexafluorophosphate were added to the reaction kettle Add 1000mL of dichloromethane and 500mL of methanol as a composite solvent, mix well, react at 25°C for 12h, and distill under reduced pressure at 40°C for 0.5h to remove the solvent, then add 1500mL of ether to wash 3 times, filter, and vacuum the filter cake at 50°C Dry for 12h to obtain fluorine-containing dihydric alcohol; in N 2 Atmosphere and room temperature, 31.48g of dicyclohexylmethane diisocyanate, 100g of hydroxypropyl silicone oil with a weight average molecular weight of 1000 were added to the reaction kettle, and then 3.87g of fluorine-containing diol and 0.41g of dibutyltin dilaurate were added , stirred and rea...

Embodiment 2

[0029] At room temperature, 36.41 g tridetrifluoroheptanoic acid, 10.51 g 2-amino-2-methyl-1,3-propanediol and 75.86 g benzotriazole-N,N,N',N'-tetramethyl Add urea hexafluorophosphate into the reaction kettle, then add 1200mL of dichloromethane and 400mL of methanol as a composite solvent, mix well, react at 25°C for 12h, and distill under reduced pressure at 40°C for 0.5h to remove the solvent, then add 1600mL of ether each time for washing 4 times, filter, and vacuum-dry the filter cake at 45°C for 16 hours to obtain fluorine-containing diols; 2Atmosphere and room temperature, 31.48g of dicyclohexylmethane diisocyanate, 200g of hydroxypropyl silicone oil with a weight average molecular weight of 2000 are added to the reaction kettle, and then 4.51g of fluorine-containing glycol and 0.71g of stannous octoate are added. Stir and react at 70°C for 3h; cool down to 40°C, add 3.90g of hydroxypropyl acrylate and 0.016g of o-methylhydroquinone, react for 5h and cool down to room te...

Embodiment 3

[0033] At room temperature, 41.41g of pentafluorooctanoic acid, 11.92g of 2-amino-2-ethyl-1,3-propanediol and 76.05g of 2-(7-azobenzotriazole)-N,N,N' , N'-Tetramethyluronium hexafluorophosphate was added to the reaction kettle, and then mixed with a composite solvent of 1100mL dichloromethane and 550mL methanol, reacted at 25°C for 16h, and distilled under reduced pressure at 40°C for 0.5h to remove the solvent, and then Add 1650mL diethyl ether each time to wash 4 times, filter, and vacuum-dry the filter cake at 60°C for 12h to obtain fluorine-containing dihydric alcohol; 2 Atmosphere and room temperature, 35.57g of isophorone diisocyanate and 300g of hydroxypropyl silicone oil with a weight average molecular weight of 3000 were added to the reaction kettle, and then 10.31g of fluorine-containing diol and 1.10g of dibutyltin dilaurate were added , stirred and reacted at 70°C for 3h; cooled to 40°C, added 15.62g of hydroxyethyl methacrylate and 0.065g of hydroquinone, reacted ...

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Abstract

The invention relates to a preparation method of an ultraviolet light polymerization fluorosilicone release film for optical display. The method comprises the following steps of firstly performing polymerization reaction on hydroxyalkyl silicone oil, fluorine-containing dihydric alcohol and diisocyanate under the effects of organic tin catalysts; then, adding polymerization inhibitors and acrylichydroxyl ester for termination so as to prepare fluorosilicone segmented polyurethane acrylate oligomers; next, active diluent monomers and photoinitiators are added for uniform mixing; a release agent is obtained; the release agent is uniformly coated onto an organic substrate; after ultraviolet light curing, the release film is obtained. The ultraviolet light polymerization fluorosilicone release film for optical display has the advantages that the release force is light; the fog degree is low; the light transmission rate and the residue attachment rate are high; the attaching force of the coating film on the polyethylene glycol terephthalate film is at the grade 1; the release film can be widely used for formation components of various displays of polarizers for tablet displays, organicEL and the like; the preparation method is simple; the addition of organic solvents is not needed in the coating curing process; the harm of solvents to the human body and the environment can be effectively avoided.

Description

technical field [0001] The invention belongs to the field of polymer material preparation, and in particular relates to an ultraviolet light-cured fluorosilicon release film for optical display and a preparation method thereof. Background technique [0002] Release film has been widely used in packaging, printing, flexible circuits, laser anti-counterfeiting, reflective materials, waterproof materials, adhesive products, die-cutting and punching processing and other industries. The release film for an optical display is used as a component of various displays, such as a polarizing plate for a flat panel display, organic EL, etc., because of its excellent characteristics. [0003] The existing release film products generally have the disadvantages of low haze value and light transmittance, which limit the application in the optical field. Moreover, the traditional solvent-based fluorosilicone release film mainly adopts the method of thermal curing. During the coating and cur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/04C09D175/14C09D5/20C08G18/67C08G18/65C08G18/61C08G18/38C09J7/40C08L67/02
CPCC08G18/3825C08G18/61C08G18/672C08J7/0427C08J2367/02C08J2475/14C09D5/20C09D175/14C09J7/401C08G18/65
Inventor 周钰明李海芳卜小海钟熙王泳娟何曼
Owner SOUTHEAST UNIV
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