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Alkyl phosphinate polymer and preparation method and application thereof

A technology of alkyl phosphinate and alkyl phosphinate, which is applied in the field of alkyl phosphinate polymer and its preparation and application, and can solve the problems of insufficient thermal stability of flame retardants and difficulties in meeting processing requirements, etc.

Active Publication Date: 2010-12-08
SHANGHAI HUIHAI CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the thermal stability of the existing flame retardants is not enough to meet the processing requirements of some products, such as glass fiber reinforced nylon or polyester

Method used

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  • Alkyl phosphinate polymer and preparation method and application thereof
  • Alkyl phosphinate polymer and preparation method and application thereof

Examples

Experimental program
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Embodiment 1

[0040] An aluminum dialkylphosphinate polymer is first prepared. For this, a mixture of 150 KG of sodium hypophosphite and 750 kg of deionized water was charged into a 2000 L jacketed pressure reactor. Once the reaction mixture had been heated to 100°C, acetylene was added through a pressure relief valve set at 3 bar until saturation was reached in the reactor. 2.0KG2, 2' azobis (N, N, a dimethylene isobutyromide) dihydrochloride solution in 200KG water is uniformly fed to the in the mixture. A total of 18.5KG of acetylene was consumed. Acetylene was replaced by ethylene, which was added through a pressure relief valve set at 6 bar until saturation was reached in the reactor. The catalyst is uniformly fed into the mixture at a temperature of 100---105°C. Total reaction 10h. Consumption of ethylene 39.6KG. The reactor was depressurized, and after cooling to 80 °C. Within 2 hours, add 290KG of 50% Al-containing 2 o 3 16.53wt% Al 2 (SO 4 ) 3 aqueous solution. The res...

Embodiment 2

[0042] An aluminum dialkylphosphinate polymer is first prepared. For this, a mixture of 150 KG of sodium hypophosphite and 750 kg of deionized water was charged into a 2000 L jacketed pressure reactor. Once the reaction mixture had been heated to 100°C, acetylene was added through a pressure relief valve set at 3 bar until saturation was reached in the reactor. 2.0KG2, 2' azobis (N, N, a dimethylene isobutyromide) dihydrochloride solution in 200KG water is uniformly fed to the in the mixture. A total of 24.5KG of acetylene was consumed. Acetylene was replaced by ethylene, which was added through a pressure relief valve set at 6 bar until saturation was reached in the reactor. The catalyst is uniformly fed into the mixture at a temperature of 100---105°C. Total reaction 10h. Consumption of ethylene 26.5KG. The reactor was depressurized, and after cooling to 80 °C. Within 2 hours, add 290KG of 50% Al-containing 2 o 3 16.53wt% Al 2 (SO 4 ) 3 aqueous solution. The res...

Embodiment 3

[0044] An aluminum dialkylphosphinate polymer is first prepared. For this, a mixture of 150 KG of sodium hypophosphite and 750 kg of deionized water was charged into a 2000 L jacketed pressure reactor. Once the reaction mixture had been heated to 100°C, acetylene was added through a pressure relief valve set at 3 bar until saturation was reached in the reactor. A solution of 2.0KG potassium persulfate in 200KG water was uniformly fed into the mixture under continuous stirring at a temperature of 100---105°C. A total of 27.6KG of acetylene was consumed. Acetylene was replaced by ethylene, which was added through a pressure relief valve set at 6 bar until saturation was reached in the reactor. The catalyst is uniformly fed into the mixture at a temperature of 100---105°C. Total reaction 10h. Consumption of ethylene 20.0KG. The reactor was depressurized, and after cooling to 80 °C. Within 2 hours, add 290KG of 50% Al-containing 2 o 3 16.53wt% Al 2 (SO 4 ) 2 aqueous sol...

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Abstract

The invention relates to an alkyl phosphinate polymer and a preparation method and application thereof. The method comprises the following steps of: filling a mixture of hypophosphorous acid or phosphinate and water or acetic acid into a pressure reactor with a jacket; when the mixture is heated to between 70 and 110 DEG C, adding alkyne into the pressure reactor through a pressure-reducing valvetill the mixture in the pressure reactor is saturated; uniformly adding aqueous solution of free radical initiator into the obtained mixture with continuous stirring till reaching the required alkynequantity, and then switching the alkyne into olefin; adding the olefin into the pressure reactor through the pressure-reducing valve till the mixture in the pressure reactor is saturated, uniformly adding a catalyst into the mixture, reacting the mixture for 8 to 12 hours, reducing the pressure of the pressure reactor, and cooling the mixture to 80 DEG C; and adding a metal compound into the pressure reactor to perform reaction, centrifuging the obtained solid, washing the solid by using water, and drying the solid in vacuum to obtain the alkyl phosphinate polymer. The invention also relates to the application of the alkyl phosphinate polymer serving as a flame retardant, a flame retardant composition and a flame-retardant polymer molding composition.

Description

technical field [0001] The invention relates to an alkyl phosphinate polymer, a preparation method and application thereof. Background technique [0002] The flame retardant properties of polyester or nylon can be obtained by incorporating various types of additives. Generally, halogenated compounds, especially polybrominated aromatic compounds, have been used as flame retardant additives in such polymers. It is generally believed that when these products are ignited, the products inhibit the free radical gas phase reactions that occur in the flame. This makes halogenated flame retardants very popular as additives for different types of polymeric materials including polyesters and nylons. However, during the last fifteen years or so, halogenated flame retardants have come under scrutiny because of ecological concerns. At this time, the flame retardant industry will be under pressure to change in the direction of flame retardant additives that are considered to be more env...

Claims

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Application Information

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IPC IPC(8): C07F9/30C09K21/12C08L67/02C08L25/06C08L77/06C08K5/5313C08K13/04
Inventor 叶金标徐向东
Owner SHANGHAI HUIHAI CHEM TECH
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