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Method of preparing amidophosphoric acid flame resisting agent

A technology for producing aminophosphoric acid and amines, which is applied in the field of producing aminophosphoric acid flame retardants, can solve problems such as complicated manufacturing process, and achieve the effect of simplifying the process and reducing costs

Inactive Publication Date: 2009-08-05
CHANG CHUN PLASTICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Their disadvantage is that they need to be reacted at very high temperature and the manufacturing process is complicated

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Under normal pressure, 141.94 grams (1.0 mole) of phosphorus pentoxide and 126.06 grams (1.0 mole) of melamine (trade name Changchun Minaimin) are dropped into 5.0 liters of ball milling reaction equipment, activated after sealing, running at 150 The reaction is carried out under the temperature condition of ℃ for 16 hours, and the powdered melamine phosphoric acid flame retardant finished product can be obtained after the reaction is completed and cooled. The weight loss rate was 0.45% by weight when tested by a differential thermogravimetric analyzer at a thermal cracking temperature of 260°C. Measure the phosphorus content and dispersibility of the powdered melamine phosphoric acid flame retardant finished product, and record the results in Table 1.

Embodiment 2

[0025] Under normal pressure, 70.97 grams (0.5 moles) of phosphorus pentoxide, 126.06 grams (1.0 moles) of melamine (trade name Changchun Minamine) and 0.5 grams of magnesium chloride catalyst are dropped into 5.0 liters of ball milling reaction equipment, sealed After activation and operation, the reaction is carried out at a temperature of 100°C for 6 hours. After the reaction is completed and cooled, the finished product of powdered melamine phosphoric acid flame retardant can be obtained. The weight loss rate was 0.23% by weight when tested by a differential thermogravimetric analyzer at a thermal cracking temperature of 260°C. Measure the phosphorus content and dispersibility of the powdered melamine phosphoric acid flame retardant finished product, and record the results in Table 1.

Embodiment 3

[0027] Under normal pressure, put 88.99 grams (0.5 moles) of pyrophosphoric acid, 126.06 grams (1.0 moles) of melamine (trade name Changchun melamine) and 0.5 grams of magnesium chloride catalyst into 5.0 liters of ball milling reaction equipment, seal and activate Running, the reaction is carried out at a temperature of 100°C for 6 hours, and the finished powdered melamine phosphoric acid flame retardant can be obtained after the reaction is completed and cooled. The weight loss rate was 0.43% by weight when tested by a differential thermogravimetric analyzer at a thermal cracking temperature of 260°C. Measure the phosphorus content and dispersibility of the powdered melamine phosphoric acid flame retardant finished product, and record the results in Table 1.

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PUM

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Abstract

The present invention relates to process of producing flame retardant of amido phosphoric acid. Melamine and phosphoric acid as materials are synthesized through no-solvent reaction at 40-200 deg.c to obtain powdered amido phosphoric acid compound used as flame retardant. The production process needing no drying and grinding steps is simple and low in cost, and the product has high dispersivity.

Description

technical field [0001] The invention relates to a method for producing an aminophosphoric acid flame retardant, in particular to a method for producing an aminophosphoric acid flame retardant by using melamine and phosphoric acid as raw materials. Background technique [0002] A flame retardant is a substance that can inhibit the ignition of the substrate or change the combustion characteristics of the substrate after being added to the substrate. As far as the current materials are concerned, plastics, fabrics and coatings are widely used in building materials, decorative materials, electronic appliances and vehicles, etc., but due to the flammable nature of these materials, they often cause loss of life and property, so they are difficult to burn The use of agents is becoming more and more important. [0003] Generally, the commonly used flame retardants are halogen-containing flame retardants, among which bromine-containing flame retardants are the most commonly used, an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F9/08C09K21/12
Inventor 黄坤源杜安邦陈智富江正荣
Owner CHANG CHUN PLASTICS CO LTD