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Method for preparing composite modified p-xylene

A para-xylene and compound modification technology, applied in the direction of one-component copolyester rayon, can solve the problem of single xylene product, achieve good antibacterial effect, improve overall function and quality effect, and improve dispersibility and compatibility effects

Inactive Publication Date: 2018-08-03
ZHEJIANG MODERN TEXTILE IND RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

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

[0043] A preparation method for composite modified p-xylene, comprising the steps of:

[0044] (1) In parts by mass, 1.5 parts of aluminum hexafluorosilicate, 1.5 parts of chromium chlorate phosphate, 30 parts of mass fraction are 5% trifluoroacetic acid aqueous solution, 0.9 parts of nickel oxide, 0.55 parts of calcium phosphate Whiskers were mixed with 9 parts of 2% hexafluorophosphoric acid aqueous solution, ground at 45°C for 2.5h with a high-energy ball mill, and then moved to a reactor lined with polytetrafluoroethylene, heated at 150°C and 0.35MPa The reaction was continuously stirred under pressure for 4 hours, then naturally cooled to normal temperature under stirring, filtered, calcined at 500°C for 3 hours, fully washed with deionized water, dried in vacuum at 75°C, pulverized in a ball mill, and passed through 250-mesh sieve to obtain a special antibacterial modifier.

[0045] (2) In parts by mass, under continuous stirring, 17 parts of p-xylene, 1.5 parts of o-xy...

Embodiment 2

[0049] A preparation method for composite modified p-xylene, comprising the steps of:

[0050] (1) In parts by mass, 1 part of aluminum hexafluorosilicate, 1 part of chromium chlorate phosphate, 50 parts of mass fraction are 5% trifluoroacetic acid aqueous solution, 0.8 part of nickel oxide, 0.5 part of calcium phosphate The whiskers were mixed with 8 parts of 2% hexafluorophosphoric acid aqueous solution, ground at 50°C for 2 hours with a high-energy ball mill, and then moved to a reactor lined with polytetrafluoroethylene, at a temperature of 140°C and a pressure of 0.4MPa The reaction was continuously stirred for 5 hours, then naturally cooled to normal temperature under stirring, filtered, calcined at 480°C for 4 hours, fully washed with deionized water, dried in vacuum at 70°C, pulverized in a ball mill, and subjected to 200 Mesh sieve to prepare a special antibacterial modifier.

[0051] (2) According to the number of parts by mass, under continuous stirring, 15 parts o...

Embodiment 3

[0055] A preparation method for composite modified p-xylene, comprising the steps of:

[0056] (1) In parts by mass, 2 parts of aluminum hexafluorosilicate, 2 parts of chromium chlorate phosphate, 50 parts of mass fraction are 5% trifluoroacetic acid aqueous solution, 1 part of nickel oxide, 0.6 part of calcium phosphate The whiskers were mixed with 10 parts of 2% hexafluorophosphoric acid aqueous solution, ground for 3 hours at 40°C with a high-energy ball mill, and then moved to a reactor lined with polytetrafluoroethylene, heated at a temperature of 160°C and a pressure of 0.3MPa. The reaction was continuously stirred for 3 hours, then naturally cooled to normal temperature under stirring, filtered, calcined at 520°C for 2 hours, fully washed with deionized water, dried in vacuum at 80°C, pulverized in a ball mill, and subjected to 300°C Mesh sieve to prepare a special antibacterial modifier.

[0057] (2) According to the number of parts by mass, under continuous stirring,...

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Abstract

The invention relates to a method for preparing composite modified p-xylene. The method comprises the following steps: 1) mixing aluminium hexafluorosilicate, phosphorus chlorate chromium, nickel oxide, a calcium phosphate whisker and trifluoroacetic acid aqueous solution, and a phosphofluoric acid aqueous solution, grinding a mixture and performing a hydro-thermal reaction, and performing steps of filtering, calcining, washing and drying to prepare a special-purpose antibacterial modifier; 2) mixing p-xylene, o-xylene, an acetamide cosolvent and the special-purpose antibacterial modifier obtained in the step 1), chromium aluminum phosphate, and white carbon black, dispersing the mixture, and filtering the mixture to prepare the composite modified p-xylene mother liquor; and 3) adding thecomposite modified p-xylene mother liquor obtained in the step 2) in p-xylene in a spray form to prepare the composite modified p-xylene. The composite modified p-xylene has excellent antibiosis function.

Description

technical field [0001] The invention belongs to the technical field of xylene variety development, and in particular relates to a preparation method of compound 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. [0003] In the prior art, as a chemical raw material, p-xylene is generally prepared mainly by improving processes such as chain transfer, disproportionation reaction, isomerization, and adsorption separation, such as the pre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/183C08G63/78C08K7/08C08K3/22C08K3/36C08K3/32D01F1/10D01F6/84
Inventor 李琪凌荣根庞学松范艳苹胡克勤
Owner ZHEJIANG MODERN TEXTILE IND RES INST
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