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Rare earth phosphor-containing organic complex and its preparation method and use

An organic complex and rare earth technology, applied in the field of rare earth phosphorus-containing organic complexes, can solve the problems of easy volatility, toxicity, high environmental pollution, low price, etc., and achieve the effect of low toxicity

Inactive Publication Date: 2007-12-12
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is a pity that they all have their own shortcomings: the light shielding agent has good protective effect and low price, but it has light-shielding properties and is only suitable for opaque materials; At the same time, because it is a pure organic compound, it also has disadvantages such as volatile, blooming, migration, and extraction, which not only affects the durability of its performance, but also causes pollution to the environment; the excited state quencher has high photostability and is volatile. Low resistance, low blooming and migration, and resistance to extraction, but deep color, high toxicity and environmental pollution, will decompose and change color during high temperature processing, and have an antagonistic effect on sulfur-containing additives; free radical scavenger has light color and high photostability, but Because of its alkalinity, it has antagonism with acidic substrates, additives and environmental substances, and like ultraviolet absorbers, because it is a pure organic compound, it also has disadvantages such as volatilization, blooming, migration, extraction, etc.

Method used

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  • Rare earth phosphor-containing organic complex and its preparation method and use
  • Rare earth phosphor-containing organic complex and its preparation method and use
  • Rare earth phosphor-containing organic complex and its preparation method and use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Synthesis of rare earth phosphorus-containing organic complexes:

[0027] At room temperature, dissolve 19.7g of 3,5-di-tert-butyl-4-hydroxybenzylphosphonic acid monoethyl ester (HBPE) (0.06mol) in 300mL of absolute ethanol, add 60mL of 1mol·L -1 Sodium hydroxide (0.06mol) aqueous solution was stirred and mixed for reaction, then, slowly added dropwise 40mL 0.5mol L -1 Rare earth chloride (RECl 3 , 0.02mol) aqueous solution, continued to stir and react for 1.5 hours. The precipitate formed by the reaction was aged at room temperature for 24 hours, then filtered under reduced pressure, and the filter cake was washed with 1:1 ethanol aqueous solution until the filtrate was tested with acidified silver nitrate solution to detect no chloride ions, and then dried at 70°C under normal pressure to constant weight to obtain White (with slight characteristic color of the corresponding rare earth ion) powdery product. After analysis and determination, the RE, C, and H contents...

Embodiment 2

[0031] Determination and Evaluation of Light Stabilizers for Polymer Light Stabilization Efficiency:

[0032] Example product and comparative example light stabilizer {light stabilizer 2002: two (3,5-di-tert-butyl-4-hydroxybenzylphosphonic acid monoethyl ester) nickel, Ni(BPE) 2 ] The photostabilization efficiency of polymer is measured and evaluated by the following method:

[0033] Dissolve light stabilizer in 15g·L -1 Polybutadiene (PB) cyclohexane solution, so that its concentration is 3,5-di-tert-butyl-4-hydroxybenzylphosphonic acid monovalent anion ligand 4.5 × 10 -4 mol L -1 {that is, the concentration of the embodiment product is 1.5×10 -4 mol L -1 , the concentration of photostabilizer in the control example is 2.25×10 -4 mol L -1 ), then, it was transferred to the quartz colorimetric tube (25mL), placed on the sample stage of the xenon lamp (1500W) exposure experimental device, so that the test solution was positioned on the focus position of the xenon lamp rad...

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Abstract

The invention discloses a kind of rare earth organophosphorus complex, the preparation method and utilizaiton. The chemical general formula of said rare earth organophosphorus compounds is: (1) RE represents one or mixture of lanthanum (La), promethium (Pr), neodymium (Nd) and samarium (Sm), (2) R is hydrogen or alkyl with carbon number being 1- 8; said organophosphorus complex is prepared with organophosphorus coordination agent, soluble rare earth salt and neutralization agent in lower alcohol or lower alcohol- water; said rare earth sulfur-containing complex can be used as light-stability agent for organic macromolecular material.The sulfur-containing complex is characterized by higher light- stability than nickle complex light- stability agent 2002, lower toxicity, light color, and no counteraction with sulfur- containing additive.

Description

technical field [0001] The invention relates to a rare earth phosphorus-containing organic complex. [0002] The invention also relates to a preparation method of the rare earth phosphorus-containing organic complex. [0003] The invention also relates to the application of the rare earth phosphorus-containing organic complex as a light stabilizer for organic polymer materials. Background technique [0004] Most organic polymer materials, including plastics, chemical fibers, rubber, coatings, paints, adhesives, etc., will undergo photodegradation reactions and age when exposed to sunlight, manifested as discoloration, loss of luster, silver streaks, erosion, and cracks As well as deterioration of appearance and physical and mechanical properties such as tensile strength, impact strength, elongation and electrical properties. Therefore, organic polymer materials used outdoors must be treated with light stabilization, and some polymers that are particularly sensitive to ultr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F9/38C07F9/40C07F3/00
Inventor 吴茂英
Owner GUANGDONG UNIV OF TECH