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A kind of bromine-containing room temperature phosphorescent waterborne polyurethane and preparation method thereof

A water-based polyurethane, room temperature phosphorescence technology, applied in the field of water-based polyurethane, can solve the problems of high price and instability, achieve strong luminous intensity, reduce non-radiative decay, and promote the effects of phosphorescent radiation decay

Active Publication Date: 2020-01-21
HEFEI KETIAN WATERBORNE TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usual room-temperature phosphorescent materials require the introduction of metal elements such as Pt and Ir, which are expensive and inherently unstable in the case of high-energy blue emitters

Method used

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  • A kind of bromine-containing room temperature phosphorescent waterborne polyurethane and preparation method thereof
  • A kind of bromine-containing room temperature phosphorescent waterborne polyurethane and preparation method thereof
  • A kind of bromine-containing room temperature phosphorescent waterborne polyurethane and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Weigh 2.103g 3-amino-9ethylcarbazole, 2.151g 4-bromophenylacetic acid, 0.122g 4-dimethylaminopyridine (DMAP) and 2.876g 1-ethyl-(3-dimethylaminopropyl ) Carbodiimide hydrochloride (EDC.HCL) was dissolved in 50g dewatered DMF solvent, and after stirring for 48 hours in the dark, pour the solution into a 500ml beaker, then add deionized water to precipitate the reaction product, and then use deionized The product is washed several times with water, and then dried in a vacuum oven to obtain the bromine-containing monomer compound.

Embodiment 2

[0037] Weigh 180g of polypropylene oxide (PPG3000, relative molecular weight 3000), put it into the reactor, add 28g of toluene diisocyanate and 5g of isophorone diisocyanate under stirring, keep the temperature at 85°C, stir for 2h; cool down to 80°C Add 10g of dimethylolpropionic acid (DMPA) and 0.4g of butanediol at ℃, and stir for 2 hours; cool down to 65℃, add catalyst and stir for 4 hours to prepare a prepolymer. Cool the prepolymer to 0°C, add 8g of triethylamine, stir for 10min, place the hydrophilic prepolymer in a high-speed emulsifier, add 430g of deionized water at a speed of 1400r / min, and slowly add 2g after phase transition Ethylenediamine post-chain extension reagent, that is, preparation of water-based polyurethane.

[0038] The bromine-containing monomer compound and water-based polyurethane obtained in Example 1 were dissolved in acetone according to the mass ratio of 0.5:100, and then formed into a film to obtain bromine-containing room-temperature phosphor...

Embodiment 3

[0040] Weigh 180g of polypropylene oxide (PPG3000, relative molecular weight 3000), put it into the reactor, add 28g of toluene diisocyanate and 5g of isophorone diisocyanate under stirring, keep the temperature at 85°C, stir for 2h; cool down to 80°C Add 10g of dimethylolpropionic acid (DMPA) and 0.4g of butanediol at ℃, and stir for 2 hours; cool down to 65℃, add catalyst and stir for 4 hours to prepare a prepolymer. Cool the prepolymer to 0°C, add 8g of triethylamine, stir for 10min, place the hydrophilic prepolymer in a high-speed emulsifier, add 430g of deionized water at a speed of 1400r / min, and slowly add 2g after phase transition Ethylenediamine post-chain extension reagent, that is, preparation of water-based polyurethane.

[0041] The bromine-containing monomer compound obtained in Example 1 and water-based polyurethane were dissolved in acetone according to the mass ratio of 0.8:100, and then formed into a film to obtain bromine-containing room-temperature phosphor...

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Abstract

The invention provides bromine-containing room-temperature phosphorescent waterborne polyurethane and a preparation method thereof. The preparation method comprises the following steps: 1) preparing waterborne polyurethane; 2) blending a bromine-containing monomer compound and the waterborne polyurethane to form a film, so as to obtain the bromine-containing room-temperature phosphorescent waterborne polyurethane. According to the bromine-containing room-temperature phosphorescent waterborne polyurethane, after the bromine-containing monomer compound is blended with the waterborne polyurethane, a macromolecular chain segment of the waterborne polyurethane can be used for effectively inhibiting vibration and rotation between luminous body molecules of the bromine-containing compound, reducing non-radiation decaying and promoting phosphorescent radiation decaying; efficient room-temperature phosphorescent light can be observed; the bromine-containing room-temperature phosphorescent waterborne polyurethane obtained by the preparation method has relatively long room-temperature phosphorescent service life and relatively strong luminous intensity.

Description

technical field [0001] The invention relates to the technical field of water-based polyurethane, and specifically discloses a bromine-containing room-temperature phosphorescent water-based polyurethane and a preparation method thereof. Background technique [0002] Phosphorescence is a long-lived luminescent phenomenon, and room temperature phosphorescence can usually be observed in inorganic compounds (such as luminous pearls). Conventional wisdom holds that for organic compounds, phosphorescence can only be obtained at low temperatures. This is due to: on the one hand, in organic compounds, excitons are highly localized and easily recombined, which is very unfavorable for the long-lived process of phosphorescence; on the other hand, the generation of phosphorescence needs to overcome the spin prohibition of the molecule itself. Restrictions on hindered and non-radiative transitions. Common room-temperature phosphorescent materials need to introduce metal elements such as...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D209/88C08L75/08C08K5/3417C08J5/18C09K11/06
CPCC07D209/88C08J5/18C08J2375/08C08K5/3417C09K11/06C09K2211/1007C09K2211/1029
Inventor 戴家兵王启东汪飞李维虎赵曦赵春娥
Owner HEFEI KETIAN WATERBORNE TECH CO LTD