UV (ultraviolet) glue water, polyurethane acrylate oligomer and preparation method of polyurethane acrylate oligomer

A polyurethane acrylate, oligomer technology, applied in the direction of polyurea/polyurethane adhesives, adhesives, adhesive types, etc. The effect of high refractive index

Active Publication Date: 2014-08-13
ZHANGJIAGANG KANGDE XIN OPTRONICS MATERIAL
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above two methods have their own advantages and disadvantages. For example, the former is beneficial to prevent the polymerization and gelation of acrylates caused by excessive heating time, and the latter is beneficial to prevent the increase of the viscosity of the system caused by the growth of molecular chains.
[0005] However, regardless of the polyurethane acrylate synthesized according to the above-mentioned method, due to the strong hydrogen bond between the intermolecular carbamates, the viscosity of the polyurethane acrylate is very large.

Method used

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  • UV (ultraviolet) glue water, polyurethane acrylate oligomer and preparation method of polyurethane acrylate oligomer
  • UV (ultraviolet) glue water, polyurethane acrylate oligomer and preparation method of polyurethane acrylate oligomer
  • UV (ultraviolet) glue water, polyurethane acrylate oligomer and preparation method of polyurethane acrylate oligomer

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preparation example Construction

[0029] Such as figure 1 Shown, the present invention discloses a kind of preparation method of polyurethane acrylate oligomer, and it comprises the steps:

[0030] Step S1. Add phenyl glycidyl ether and acrylic acid to the first reactor at a molar ratio of 1:1 to 1:1.05, then add a polymerization inhibitor and a catalyst to the first reactor, and obtain an intermediate product A after reaction. Preferably, the molar ratio of phenyl glycidyl ether and acrylic acid is 1:1.01˜1:1.03, and the optimum molar ratio of phenyl glycidyl ether and acrylic acid is 1:1.01.

[0031] Wherein, in the S1, the temperature in the first reactor is increased to 95-120°C, preferably 100-108°C, and the optimum value is 105°C. Under this temperature condition, the reaction is carried out for 3-7 hours, preferably 4-5 hours. When the acid value of the system in the first reactor is less than 4 mgKOH / g, the reaction is stopped to obtain the intermediate product A.

[0032] The mass fraction of the po...

Embodiment 1

[0048] Add 30g of phenylglycidyl ether, 14.54g of acrylic acid, 0.3g of tetramethylammonium bromide, and 0.0223g of inhibitor 4-methoxyphenol into the reactor, heat up to 100°C under stirring, and react for about 5 hours. When the acid value of the system in the reactor was 2 mgKOH / g, the reaction was stopped to obtain an intermediate substance A.

[0049] After the temperature of the system in the reactor drops to 60°C, add 44.4g of isophorone diisocyanate and 60g of toluene, stir evenly, then add 3 drops of dibutyltin dilaurate to it, and react for 1.5h. When the -NCO group content of the system in the reactor drops to half of the initial value, the reaction is stopped to obtain the intermediate product B.

[0050] 100.2g bisphenol A polyoxyethylene ether (10EO), 55.4g bisphenol A polyoxyethylene ether (20EO), 1.8g p-toluenesulfonic acid, 0.08g inhibitor 4-methoxyphenol, 0.5g sub Phosphoric acid and 130g toluene were mixed in another reactor. Then add 14.4g of acrylic acid...

Embodiment 2

[0053] Add 30g of phenylglycidyl ether, 14.54g of acrylic acid, 0.25g of tetraethylammonium bromide, 0.0223g of polymerization inhibitor 2,6-di-tert-butyl p-cresol into the reactor, heat up to 108°C under stirring, and react About 4.5h. When the acid value of the system in the reactor was 1.6 mgKOH / g, the reaction was stopped to obtain intermediate product A.

[0054] After the temperature of the system drops to 55°C, add 44.4g of isophorone diisocyanate and 60g of toluene, stir evenly, then add 3 drops of dibutyltin dilaurate to it, and react for 1.5h. When the -NCO group content of the system in the reactor drops to half of the initial value, the reaction is stopped to obtain the intermediate product B.

[0055] 80.16g bisphenol A polyoxyethylene ether (10EO), 88.64g bisphenol A polyoxyethylene ether (20EO), 2.0g p-toluenesulfonic acid, 0.09g inhibitor 2,6-di-tert-butyl p-cresol , 0.5g hypophosphorous acid and 130g toluene were mixed in another reactor. Then add 14.4g of ...

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Abstract

The invention discloses UV (ultraviolet) glue water, a polyurethane acrylate oligomer and a preparation method of the polyurethane acrylate oligomer. The preparation method comprises the steps of S1, preparing an intermediate product A by virtue of phenyl glycidyl ether and acrylic acid; S2, enabling the intermediate product A to react with isophorone diisocyanate to prepare an intermediate product B; S3, enabling bisphenol A polyoxyethylene ether to react with acrylic acid to prepare an intermediate product C; S4, enabling the intermediate product B to react with the intermediate product C; S5, adding an active diluent, performing reduced pressure distillation, filtering and discharging. A self-healing type polyurethane acrylate oligomer which has relatively high refractive index and relatively low viscosity and does not contain sulfur and halogen elements can be prepared by using the preparation method, wherein the refractive index is more than 1.53; the viscosity is 8000-20000cps at 25 DEG C; moreover, the UV glue water prepared by using the polyurethane acrylate oligomer as a main substance is uniformly coated on a PET (polyethylene terephthalate) base material, and is cured and molded on a molding machine to prepare a prismatic lens; scratches on the prismatic lens can be removed within 1-3 seconds.

Description

technical field [0001] The invention relates to the field of chemical synthesis, in particular to a polyurethane acrylate oligomer, a preparation method thereof, and a UV glue containing the polyurethane acrylate oligomer. Background technique [0002] At present, the light source used for the backlight unit is generally a cold cathode fluorescent lamp (CCFL) or a line light source or a point light source produced by a light emitting diode (LED). To convert it into a surface light source, a diffusion plate, a diffusion sheet, etc. are required. , which will result in more light loss. Therefore, it is necessary to use an optical film to compensate for the lost light, and the optical film can use a prism sheet. [0003] The prism sheet used is generally coated with a coating, and the coating generally uses UV curable resin. In order to make the image obtained by the liquid crystal display element brighter and improve the quality better, it is necessary to choose a resin with ...

Claims

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Application Information

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IPC IPC(8): C08G18/67C09J175/14
CPCC08G18/4808C08G18/4841C08G18/672C08G18/755C09J175/14C08G18/48
Inventor 张汉清尹晓峰张立虎丁清华
Owner ZHANGJIAGANG KANGDE XIN OPTRONICS MATERIAL
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