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Preparation method and application of polymerizable organic acid tetrakis (hydroxymethyl) phosphine

A technology of organic acid tetrakis hydroxymethyl phosphine and tetrakis hydroxymethyl phosphonium methacrylate, applied in the field of antibacterial and flame retardant, can solve the problems of reducing flame retardancy, loss of tetrakis hydroxymethyl phosphine sulfate, loss of functional effectiveness, etc.

Pending Publication Date: 2022-04-26
洛阳冠银生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, when it is used for antibacterial and flame retardant of textiles, especially relatively inert chemical fiber fabrics, with the increase of washing times, tetrakis hydroxymethyl phosphorus sulfate will lose its functional effectiveness; the flame retardant used for wood will also decline with time. reduce its flame retardancy

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  • Preparation method and application of polymerizable organic acid tetrakis (hydroxymethyl) phosphine

Examples

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preparation example Construction

[0018] The preparation principle of the present invention is: (1) use acrylic acid organic matter to react with barium hydroxide to generate barium acrylate; 2 Oh) 4 P] 2 SO 4 ) reacts to generate tetrakis hydroxymethyl phosphonium acrylate and barium sulfate precipitation, and after the barium sulfate precipitation is separated, a kind of polymerizable unsaturated organic acid tetrakis hydroxymethyl phosphorus can be obtained; after the organic acid tetrakis hydroxymethyl phosphorus is purified, it can It is used for the antibacterial and flame retardant of fabrics, and can further obtain a polymer containing organic acid tetrakis hydroxymethyl phosphonium through homopolymerization or copolymerization reaction. The polymerizable organic acid tetrakis hydroxymethyl phosphonium has an unsaturated structure and can It can also be grafted and copolymerized with fibers and wood to make it permanent antibacterial and flame retardant.

[0019] The relevant reaction equations are...

Embodiment 1

[0029] (1) Adding a barium hydroxide solution with a mass fraction of 10% in an aqueous solution of methacrylic acid with a mass fraction of 50%, so that the molar ratio of the two is 2:1, and stirring and reacting at normal pressure and room temperature for 1 -2 hours. After the reaction is completed, filter at low temperature to obtain barium methacrylate precipitate; dry the barium methacrylate precipitate in vacuum at 40° C. for future use.

[0030] (2) Ultrasonic disperse the barium methacrylate precipitate obtained in step (1) in water to form a barium methacrylate aqueous dispersion with a mass fraction of 20%, and add the mass fraction in the prepared barium methacrylate aqueous dispersion under stirring Be 60% tetrakis hydroxymethyl phosphorus sulfate aqueous solution, make the mass ratio of the two be 1:1, stir reaction 2 hours under normal pressure, room temperature, after reaction is finished, obtain tetrakis hydroxymethyl phosphorus methacrylate and The barium sulf...

Embodiment 2

[0032] (1) Add a barium hydroxide solution with a mass fraction of 10% to an aqueous solution of acrylic acid with a mass fraction of 50%, so that the ratio of the two substances is 2:1, and stir and react at normal pressure and room temperature for 1-2 hours . After the reaction is completed, filter at low temperature to obtain barium acrylate precipitate; vacuum dry the barium acrylate precipitate at 40° C. for future use.

[0033] (2) Ultrasonic disperse the barium acrylate precipitate obtained in step (1) in water to form a barium acrylate water dispersion with a mass fraction of 20%, and add a mass fraction of 30% tetrahydroxy acrylate in the prepared barium acrylate water dispersion under stirring Phosphorus methylsulfate aqueous solution, so that the ratio of the two substances is 1:1, stirred and reacted at normal pressure and room temperature for 2 hours, after the reaction was completed, tetrahydroxymethylphosphorus acrylate and barium sulfate were precipitated, and ...

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Abstract

The invention relates to a preparation method and application of polymerizable organic acid tetrakis (hydroxymethyl) phosphine, which comprises the following steps: adding a barium hydroxide solution into an aqueous solution containing acrylic acid or methacrylic acid, reacting at normal pressure and room temperature for 1-2 hours, and filtering to obtain a barium acrylate precipitate or a barium methacrylate precipitate; the preparation method comprises the following steps: adding a tetrakis hydroxymethyl phosphonium sulfate aqueous solution into an aqueous dispersion containing barium acrylate or barium methacrylate under stirring, carrying out stirring reaction at normal pressure and room temperature for 3 hours, carrying out solid-liquid separation after the reaction is completed, and purifying the obtained unsaturated organic acid tetrakis hydroxymethyl phosphonium to 60% by adopting reduced pressure distillation. The prepared unsaturated organic acid tetrakis (hydroxymethyl) phosphine has a relatively large molecular structure, can be directly used in antibacterial treatment of fabrics, and is not easy to lose. The obtained unsaturated organic acid tetrakis (hydroxymethyl) phosphorus is subjected to initiation polymerization to obtain a tetrakis (hydroxymethyl) phosphorus-containing high polymer material, and the material is firmly combined on materials such as fabrics, wood and the like and can be used as an antibacterial fabric finishing agent, a wood flame retardant, an antibacterial coating and the like.

Description

technical field [0001] The invention relates to the field of antibacterial and flame retardant technologies, in particular to a preparation method and application of a polymerizable organic acid tetrakishydroxymethylphosphonium. Background technique [0002] Tetrahydroxymethylphosphorus sulfate ([(CH 2 Oh) 4 P] 2 SO 4 ) is a green and environment-friendly quaternary phosphorus fungicide. Its product has good water solubility, low freezing point and stable chemical properties. fungicide. Tetrahydroxymethylphosphorus sulfate is also a recognized permanent flame retardant for pure cotton and polyester-cotton fabrics. Because of its active hydroxymethyl groups in its chemical structure, it has active reactivity and can react with many substances such as amines and phenols. And so on to form a high polymer, which can endow the cotton fabric with excellent flame retardant properties; when co-treated with amines, due to the formation of a network structure with cellulose, the ...

Claims

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Application Information

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IPC IPC(8): C07F9/54C07C51/41C07C57/04D06M14/18C09D143/02C08F230/02C08F220/14C08F220/18C09D5/18B27K3/34B27K3/15
CPCC07F9/5407C07C51/412C07C57/04D06M14/18C09D143/02C08F230/02C09D5/18B27K3/34B27K3/15D06M2200/30B27K2240/20B27K2240/30C08F220/14C08F220/1804
Inventor 张航李治通李翊帆张玉清
Owner 洛阳冠银生物科技有限公司
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