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Melamine alkyl phosphate as well as preparation method and application thereof

The technology of melamine alkyl phosphate and methylol dimethyl phosphite is applied in the field of flame retardants, which can solve the problems of complicated preparation process of flame retardants, the flame retardants cannot contain phosphorus and nitrogen elements at the same time, etc., and achieves low cost. , The effect of short response time and simple steps

Inactive Publication Date: 2021-03-23
JIANGSU CHANGNENG ENERGY SAVING NEW MATERIALS SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] One of the technical problems to be solved by the present invention is that the commonly used flame retardants in the prior art usually cannot contain phosphorus and nitrogen elements at the same time, and at the same time, the preparation process of flame retardants containing phosphorus and nitrogen elements is complicated. A melamine alkane is provided The melamine alkyl phosphate has the advantages of containing phosphorus and nitrogen elements at the same time, and the preparation process is simple

Method used

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  • Melamine alkyl phosphate as well as preparation method and application thereof
  • Melamine alkyl phosphate as well as preparation method and application thereof
  • Melamine alkyl phosphate as well as preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0029] (1) In a reaction vessel equipped with a reflux condenser, add 3.3 mol of methanol and 1.7 mol of paraformaldehyde in a mass percentage of 96%, then add a 32% aqueous sodium hydroxide solution to adjust the pH value At 9.5, the depolymerization reaction of paraformaldehyde occurs, the depolymerization temperature is 80°C, the depolymerization pressure is normal pressure, and the depolymerization time is 1.5h, and the material Ⅰ is obtained;

[0030] (2) Add 1mol of dimethyl phosphite to the material I, the reaction temperature is 68°C, the reaction pressure is normal pressure, the reaction time is 0.5h, after reflux for 30min, cool down to below 30°C, filter and dry to obtain the material Ⅱ, that is, dimethyl hydroxymethyl phosphite;

[0031] (3) In another reaction vessel equipped with a reflux condenser, add 1mol of N-methylol-N, N', N', N ", N "-pentamethoxymethyl melamine resin and step (2 1mol of dimethylol dimethyl phosphite obtained in ), and added 500 millilite...

Embodiment 2～3

[0036]Embodiments 2 to 3 are carried out according to the steps in Embodiment 1. The only difference is that the reaction raw materials, raw material ratios, reaction time, and reaction temperature are different. See Table 1 for details; the prepared melamine alkyl phosphate is used as a flame retardant The agent is added to the foaming formula of polyurethane foam according to the mass fraction in Table 2 for foaming, and the performance index data of the prepared polyurethane foam are shown in Table 3.

[0037] The number of moles of raw materials used in the preparation of table 1 embodiment 1~3 melamine alkyl phosphate and reaction conditions

[0038]

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Abstract

The invention relates to melamine alkyl phosphate as well as a preparation method and application thereof, which mainly solves the problems that a common flame retardant generally cannot contain phosphorus and nitrogen elements at the same time and a preparation process of the flame retardant containing the phosphorus and nitrogen elements at the same time is complex in the prior art. Through providingmelamine alkyl phosphate, the preparation method comprises the following steps of adding methanol and 96% by mass of paraformaldehyde into a reaction vessel according to a molar ratio of (3-10):(1.5-5.0), adjusting the pH value to 9.5-11.5, depolymerizing paraformaldehyde, and adding dimethyl phosphite to react, thereby obtaining hydroxymethyl dimethyl phosphite, and reacting the partially etherified melamine resin with hydroxymethyl dimethyl phosphite according to the molar ratio of 1: (1-3) at the temperature of 80-100 DEG C, regulating the pH value to 8.5-9.5, and removing the solventto obtain the melamine alkyl phosphate and the application thereof, so that the problems are better solved, and the method can be applied to industrial application of polyurethane foam products.

Description

technical field [0001] The invention relates to the field of flame retardants, in particular to a melamine alkyl phosphate and a preparation method and application thereof. Background technique [0002] Polyurethane materials are widely used because of their excellent properties. Polyurethane foam can be used in the fields of household items and car seats, and can also be used as thermal insulation materials in the fields of building insulation and refrigeration insulation. Polyurethane is a porous organic material prepared by the reaction of isocyanate components and polyester polyol or polyether polyol components. It is a flammable substance. For this, various application fields have put forward requirements for the flame retardancy of polyurethane materials. , For example, the U.S. federal government has formulated the standard FMVSS302 on the fire test of automotive interior parts. In part A of the fire test standard CAL TB117 for upholstered furniture, it is also judged ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F9/6521C08K5/521C08L75/04
CPCC07F9/6521C08K5/521C08L2201/02C08L2203/14C08L75/04
Inventor 闫伟施剑峰赵俊飞丁宇韩国飞
Owner JIANGSU CHANGNENG ENERGY SAVING NEW MATERIALS SCI & TECH