Organic aluminum phosphate fire retardant and preparation method and use thereof

A technology of organic phosphonic acid and flame retardant, which is applied in the direction of fireproof coatings, etc., can solve the problem of not having a large amount, and achieve the effects of convenient operation, good thermal stability, and high yield

Inactive Publication Date: 2011-06-08
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Regarding aluminum phosphate flame retardants, the

Method used

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  • Organic aluminum phosphate fire retardant and preparation method and use thereof
  • Organic aluminum phosphate fire retardant and preparation method and use thereof
  • Organic aluminum phosphate fire retardant and preparation method and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The first step: add dimethyl methylphosphonate (DMMP) (372.3g, 3.0mol) successively in a 3000mL three-neck round bottom flask equipped with mechanical stirring, tap water condenser and constant pressure dropping funnel Sodium (120.0 g, 3.0 mol) and 1500 mL of water were prepared with a 2 mol / L aqueous sodium hydroxide solution, stirred at room temperature for 6 hours to obtain an aqueous solution of methyl methylphosphonate (MMP) sodium salt II.

[0033] The second step: add aluminum sulfate octadecahydrate (333.2g, 0.5mol) and 500mL water in a 5000mL four-necked round bottom flask equipped with mechanical stirring, tap water condenser, built-in thermometer and constant pressure dropping funnel, and stir dissolve. The aqueous solution of MMP sodium salt II obtained from the first step reaction was added to it in batches within 3 hours, and the temperature of the oil bath was raised to 90°C during the addition. Then the oil bath was heated up to 110° C., and the reactio...

Embodiment 2

[0036] The first step reaction is the same as in Example 1, and the difference from Example 1 is that the second step is reacted for 7 hours to obtain 299g of the target product I, and the yield is 84.5%.

Embodiment 3

[0038] The first step reaction is the same as in Example 1, and the difference from Example 1 is that the second step is reacted for 10 hours to obtain 300g of target product I with a yield of 84.8%.

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Abstract

The invention discloses a preparation method and use of an organic aluminum phosphate fire retardant. The method comprises: hydrolyzing dimethylmethylphosphonate under the action of sodium hydroxide or potassium hydroxide to form the sodium or potassium salt of dimethylmethylphosphonate, wherein the molar ratio of the dimethylmethylphosphonate to the sodium hydroxide or potassium hydroxide is 1:1; and reacting the aqueous solution of the sodium or potassium salt of dimethylmethylphosphonate with aluminum sulfate under heating and violently stirring CONDITIONS according to a molar ratio of 6:1 to form aluminum methyl methyl phosphonate. The aluminum methyl methyl phosphonate prepared by the invention only is formed by only reactions both of which are performed by using water as reaction medium, the process is simple and the efficiency is high. The thermal decomposition temperature of the aluminum methyl methyl phosphonate prepared by the method is above 325 DEG C, and the aluminum methyl methyl phosphonate can be used as V-0 grade fire retardant for thermoplastic plastics such as poly butylenes terephthalate (PBT) resin, poly(ethylene terephthate) (PET) resin, polyamide PA66 resin and poly(p-phenylene oxide) (PPO) resin.

Description

technical field [0001] The invention relates to a preparation method and application of an organic aluminum phosphonate flame retardant, that is, sodium methyl phosphonate (MMP) is prepared by hydrolyzing dimethyl methyl phosphonate (DMMP) under the action of an equimolar amount of alkali Salt or potassium salt solution, or the two-step reaction process of preparing the sodium salt or potassium salt solution of MMP by reacting methyl methyl phosphonate with an equimolar amount of alkali and reacting the salt solution with aluminum sulfate to generate an organic aluminum phosphonate flame retardant . The method is characterized in that water is used as the reaction medium in the two-step reactions, avoiding the use of a large amount of organic solvents, and the process is simple and efficient. technical background [0002] Polymer materials (plastic, rubber, chemical fiber, etc.) are widely used in construction industry, automobile industry, medical and health care, househol...

Claims

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Application Information

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IPC IPC(8): C09K21/12C08K5/5333
Inventor 余正坤刘冰夏世勇
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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