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Preparation method of titaniferous composition with light stability

A technology for photostability and composition, which is applied in the field of preparation of titanium-containing compositions, and can solve problems such as poor photostability

Active Publication Date: 2009-07-01
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The technical problem to be solved by the present invention is the poor light stability of the reaction product of titanate and 2-hydroxycarboxylic acid compounds in the prior art, and a new preparation of a titanium-containing composition with light stability is provided method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Add 154 grams (0.8 moles) of citric acid monohydrate and 308 grams of isopropanol into a reactor equipped with a stirrer, a condenser and a thermometer, stir to dissolve the citric acid, and slowly drop tetraisopropyl titanate into the reactor 114 grams (0.4 moles) of ester, heat and reflux for one hour, vacuumize and distill isopropanol to obtain a solid substance, add 200 grams of water to dissolve it, then add ammonia water to neutralize the pH value of the system to about 7, and obtain light yellow and transparent The liquid was evaporated to remove water in a vacuum to obtain a white crystalline titanium citrate compound powder, whose titanium content was 8.9% by weight according to plasma emission spectrometry analysis.

[0021] 2.70 grams (0.005 moles) of titanium citrate compound were dissolved in 10 grams of ethylene glycol to obtain a light yellow transparent liquid, and 2.06 grams (0.005 millimoles) of 50% aqueous solution of hydroxyethylidene diphosphonic aci...

Embodiment 2

[0023] Add 154 grams (0.8 moles) of citric acid monohydrate and 308 grams of isopropanol into a reactor equipped with a stirrer, a condenser and a thermometer, stir to dissolve the citric acid, and slowly drop tetraisopropyl titanate into the reactor 114 grams (0.4 moles) of ester, heat and reflux for one hour, vacuumize and distill isopropanol to obtain a solid substance, add 200 grams of water to dissolve it, then add ammonia water to neutralize the pH value of the system to about 7, and obtain light yellow and transparent The liquid was evaporated to remove water in a vacuum to obtain a white crystalline titanium citrate compound powder, whose titanium content was 8.9% by weight according to plasma emission spectrometry analysis.

[0024] 2.70 grams (0.005 moles) of titanium citrate compounds are dissolved in 10 grams of ethylene glycol to obtain light yellow transparent liquid, add 5.40 grams (0.01 moles) of 2-phosphonic acid butane-1,2,4-tricarboxylic acid, React at 80°C ...

Embodiment 3

[0026] Add monowater, 154 grams (0.8 moles) of citric acid and 308 grams of isopropanol into a reactor equipped with a stirrer, condenser and thermometer, stir to dissolve the citric acid, and slowly drop tetraisotitanate into the reactor. 114 grams (0.4 mole) of propyl ester, heat and reflux for one hour, vacuumize and evaporate the isopropanol to obtain a solid substance, add 200 grams of water to dissolve it, then add ammonia water to neutralize the pH value of the system to about 7, and obtain a light yellow It was a transparent liquid, and the water was evaporated in a vacuum to obtain white crystalline titanium citrate compound powder, whose titanium content was 8.9% by weight according to plasma emission spectrometry analysis.

[0027] 2.70 grams (0.005 moles) of titanium citrate compound were dissolved in 10 grams of ethylene glycol to obtain a light yellow transparent liquid, and 8.24 grams (0.02 millimoles) of 50% aqueous solution of hydroxyethylidene diphosphonic aci...

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Abstract

The invention relates to a preparation method of a titanium-containing composition with light stability, which mainly solves the problem of poor light stability of reaction products of titanate and 2-hydroxycarboxylic acid compounds in the prior art. The present invention preferably solves this problem by first reacting titanate with 2-hydroxycarboxylic acid compounds, and then reacting the reaction product with an organic phosphonic acid compound to obtain a titanium-containing composition, which can be used in the production of polyester catalysts. in industrial production.

Description

technical field [0001] The invention relates to a preparation method of a titanium-containing composition with light stability. Background technique [0002] Polyethylene terephthalate is an important industrial raw material, which can be widely used in fibers, sheets, films and other materials. [0003] The research on polyester catalysts has never stopped since the advent of polyester. At present, the polyester catalysts with more industrial production and research are mainly three series of catalysts: antimony, germanium and titanium. Among them, the most commonly used antimony series catalysts (including Sb 2 o 3 , SbAc 3 and ethylene glycol antimony, etc.), currently 90% of polyester in the world is produced by antimony catalysts. The disadvantages of antimony-based catalysts are: low activity; heavy metal catalysts pollute the environment; polymers are gray. The germanium-based catalyst has good stability, causes fewer side reactions during the reaction process, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G63/85
Inventor 王荣伟张惠明郁剑乙周文乐
Owner CHINA PETROLEUM & CHEM CORP
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