Synthesizing method and device of phosphonitrilic chloride trimer as well as preparation method of terphenyl cycloposphazene

A technology of hexachlorocyclotriphosphazene and a synthesis method is applied in the field of flame retardants, and can solve the problems of easy migration of organic flame retardants, poor compatibility between inorganic flame retardants and polymers, and poor flame retardant durability. To achieve the effect of good market application value

Inactive Publication Date: 2014-07-02
SHENZHEN HALCYON NEW MATERIALS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, the compatibility between inorganic flame retardants and polymers is not good, and this is the advantage of organic flame retardants; while organic flame retardants are easy to migrate, and the durability of flame retardancy is poor, which is the advantage of inorganic flame retardants

Method used

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  • Synthesizing method and device of phosphonitrilic chloride trimer as well as preparation method of terphenyl cycloposphazene
  • Synthesizing method and device of phosphonitrilic chloride trimer as well as preparation method of terphenyl cycloposphazene
  • Synthesizing method and device of phosphonitrilic chloride trimer as well as preparation method of terphenyl cycloposphazene

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preparation example Construction

[0021] One embodiment of the present invention is a synthesis method of hexachlorocyclotriphosphazene, which comprises the following steps.

[0022] A1. Add powdered ammonium chloride and phosphorus pentachloride to the ceramic reactor, the weight ratio of which is 900 to 1500: 3000; preferably, before step A1, the ammonium chloride and / or Or the phosphorus pentachloride is pulverized into powder. For example, the ammonium chloride is pulverized into powder by ultrasonic pulverization. As another example, the ammonium chloride and the phosphorus pentachloride are pulverized into powder by ultrasonic pulverization. As another example, the phosphorus pentachloride is pulverized into powder by ultrasonic pulverization.

[0023] A2. Add zinc chloride, heat and stir to react, and continuously drop acid-binding agent in the process of stirring; wherein, the weight ratio of zinc chloride to phosphorus pentachloride is 20 to 35:3000, and the acid-binding agent and pentachloride The...

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Abstract

The invention discloses a synthesizing method and a synthesizing device of phosphonitrilic chloride trimer as well as a preparation method of terphenyl cycloposphazene. The synthesizing method of the phosphonitrilic chloride trimer comprises the following steps: A1, adding powdered ammonium chloride and phosphorus pentachloride into a ceramic reaction kettle in a weight ratio of (900-1500):3000; A2, adding zinc chloride, heating and stirring to react, constantly dripping an acid-binding agent during stirring, wherein the weight ratio of zinc chloride to phosphorus pentachloride is (20-35):3000, the weight ratio of the acid-binding agent to the phosphorus pentachloride is (30-50):3000, the reacting temperature is 65-150 DEG C, and the reacting time is 1.5-2.5 hours; and A3, feeding to sublimation purifying equipment by adopting a closed screw rod, heating to 125-135 DEG C, and sublimating to obtain the phosphonitrilic chloride trimer.

Description

technical field [0001] The invention relates to a flame retardant, in particular to a synthesis method and a synthesis device of hexachlorocyclotriphosphazene, and a preparation method of terphenylcyclophosphazene. Background technique [0002] With the development of the national economy, plastic products are playing an increasingly important role in high-tech fields and daily life. However, the vast majority of plastics are flammable, and the resulting fire hazard has become a global public safety concern. The development and utilization of flame-retardant plastics greatly prolongs the escape time in case of fire, and reduces the loss caused by fire to the greatest extent. [0003] Traditional halogenated flame retardants are highly efficient and inexpensive, and have been widely used. However, the release of toxic smoke and corrosive gases during the combustion of halogenated flame retardants is likely to cause secondary pollution, and may produce carcinogens. Therefore...

Claims

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Application Information

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IPC IPC(8): C07F9/6593
Inventor 赖华林卢其勇
Owner SHENZHEN HALCYON NEW MATERIALS
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