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Preparation method of inorganic modified p-xylene

A p-xylene and inorganic modification technology, applied in the direction of single-component polyester rayon, etc., can solve the problems of insufficient synergistic effect, short interaction time between anti-aging additives and polyester, side reactions, etc., to achieve improved The overall function and quality effect, the effect of improving the overall function and quality, improving the dispersion and compatibility

Inactive Publication Date: 2018-09-04
ZHEJIANG MODERN TEXTILE IND RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above method has the following disadvantages: since the polyester is directly synthesized after the polymerization of PTA and ethylene glycol, the interaction time between the anti-aging additive and the polyester is relatively short, the mutual fusion is poor, and the synergistic effect is not sufficient, so the anti-aging additive cannot be fully utilized. Anti-aging performance, and also produce many side reactions, affecting the overall function and quality effect of polyester mechanics and so on
Therefore, the product of p-xylene has always been single and almost unchanged
In addition, there is currently no report on how to develop p-xylene with anti-aging function

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A preparation method of inorganic modified p-xylene, comprising the steps of:

[0046] (1) by weight 12% zinc molybdate, 10% silver phosphate, 20% concentration is the hydrobromic acid solution of 2.5wt%, 4% microsilica, 3% montmorillonite, 2% Titanium oxide and 70% fluorosulfonic acid aqueous solution with a concentration of 2wt% were mixed, ground in a liquid-phase high-energy ball mill for 2.5 hours at 47°C, and then moved to a reactor lined with polytetrafluoroethylene, and heated at a temperature of 145°C Stir and react under 0.8MPa pressure for 5h, then naturally cool to room temperature under continuous stirring, filter, calcinate at 545°C for 3h, wash thoroughly with deionized water, dry in vacuum at 90°C, grind in a high-energy ball mill for 4h, and pass through a 300-mesh Sieve to obtain anti-aging powder;

[0047] (2) p-xylene is added successively with p-xylene weight as 25% acetic acid, 3% m-xylene, 0.7% acetamide co-solvent and 5% anti-oxidant prepared by...

Embodiment 2

[0051] A preparation method of inorganic modified p-xylene, comprising the steps of:

[0052] (1) by weight 10% zinc molybdate, 8% silver phosphate, 15% concentration is the hydrobromic acid solution of 3wt%, 3% microsilica, 2% montmorillonite, 1% oxidation Titanium and 50% fluorosulfonic acid aqueous solution with a concentration of 2wt% were mixed, ground in a liquid-phase high-energy ball mill for 3 hours at 45°C, and then moved to a reactor lined with polytetrafluoroethylene, at a temperature of 150°C and a temperature of 0.5 Stir and react under MPa pressure for 3h, then naturally cool to room temperature under continuous stirring, filter, calcinate at 550°C for 2h, fully wash with deionized water, dry in vacuum at 80°C, grind in a high-energy ball mill for 5h, and pass through a 250-mesh sieve Prepare anti-aging powder;

[0053] (2) p-xylene is added successively with p-xylene weight as 30% acetic acid, 2% m-xylene, 0.6% acetamide co-solvent and 6% anti-oxidant prepared...

Embodiment 3

[0057] A preparation method of inorganic modified p-xylene, comprising the steps of:

[0058] (1) by weight 13% zinc molybdate, 12% silver phosphate, 25% concentration is the hydrobromic acid solution of 3wt%, 5% microsilica, 4% montmorillonite, 3% oxidation Titanium and 80% fluorosulfonic acid aqueous solution with a concentration of 2wt% were mixed, ground at 50°C for 2 hours with a liquid-phase high-energy ball mill, and then moved to a reactor lined with polytetrafluoroethylene, heated at a temperature of 140°C and 1MPa Stir and react under pressure for 6 hours, then cool naturally to room temperature under continuous stirring, filter, calcinate at 540°C for 4 hours, wash thoroughly with deionized water, dry in vacuum at 95°C, grind in a high-energy ball mill for 3 hours, and pass through a 350-mesh sieve to prepare anti-aging powder;

[0059] (2) p-xylene is added successively with p-xylene weight as 20% acetic acid, 4% m-xylene, 0.8% acetamide co-solvent and 3% anti-oxi...

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Abstract

The invention relates to a preparation method of inorganic modified p-xylene. The preparation method comprises the following steps: mixing zinc molybdate, silver phosphate, a hydrobromic acid solution, silica fume, montmorillonite, titanium oxide and a fluosulfonic acid solution, grinding a mixture, and performing a hydro-thermal reaction, and performing the steps of filtering, calcining, washingand drying on the mixture to obtain anti-aging powder; mixing p-xylene, acetic acid, m-xylene, an acetamide cosolvent, and the anti-aging powder, zinc oxide, and potassium hydrogen phosphate dispersion liquid, and performing grinding on a mixture, and dispersing and filtering the mixture to obtain the age-proof inorganic modified p-xylene mother liquor used for refinement; and 3) adding age-proofinorganic modified p-xylene mother liquor in p-xylene in a spray form to prepare the inorganic modified p-xylene. The inorganic modified p-xylene has good anti-aging function.

Description

technical field [0001] The invention relates to the technical field of developing new varieties of p-xylene, in particular to a preparation method of inorganic modified p-xylene. Background technique [0002] Dimethylbenzene is a colorless transparent liquid; it is a product in which two hydrogens on the benzene ring are replaced by methyl groups, and there are three isomers of ortho, meta and para. Of the three xylene isomers, para-xylene has the largest commercial market. Para-xylene (para-xylene), which can be abbreviated as "PX", is a derivative of benzene, an important chemical raw material, a colorless liquid, and becomes a flaky or columnar crystal at low temperature, insoluble in water, soluble in ethanol, ether, Benzene, acetone, flammable. P-xylene is a basic organic raw material, of which about 80% is used for the preparation of terephthalic acid and synthetic materials. These synthetic materials are widely used in engineering plastics, construction materials, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/183C08G63/78C08K9/02C08K3/24C08K3/32C08K3/36C08K3/34C08K3/22D01F6/92D01F1/10
Inventor 陶仁中李琪韩文娟胡超胡克勤张芳
Owner ZHEJIANG MODERN TEXTILE IND RES INST
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