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Non-halogen phosphoric acid ester combustion inhibitor for engineering plastic and method of preparing the same

A technology of halogen-free phosphate esters and engineering plastics, which is applied in the direction of fire-resistant coatings, etc., can solve problems such as application restrictions, and achieve the effects of reducing production costs, good processing performance, and reducing investment

Active Publication Date: 2008-12-10
ZHEJIANG WANSHENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the early 1990s, based on the requirements of environmental protection and sustainable development, the call for non-halogenated flame-retardant engineering plastics has become more and more popular. Some brominated flame retardants have been banned, and some are also treated with prudence. App is restricted

Method used

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  • Non-halogen phosphoric acid ester combustion inhibitor for engineering plastic and method of preparing the same
  • Non-halogen phosphoric acid ester combustion inhibitor for engineering plastic and method of preparing the same
  • Non-halogen phosphoric acid ester combustion inhibitor for engineering plastic and method of preparing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] In the first step, add 1mol (110g) hydroquinone, 6mol ( 920g) phosphorus oxychloride and 1.2g aluminum trichloride, slowly heat up to 60°C, a large amount of hydrogen chloride gas is produced, then slowly heat up to 110°C, keep warm until no hydrogen chloride is released, and the reaction is complete; (50-60kPa), and then under high vacuum (95-97kPa) at about 100 ° C to distill off excess phosphorus oxychloride to obtain the intermediate hydroquinone bisphosphoryl chloride oligomer, the yield of the intermediate 93%, and the recovery rate of phosphorus oxychloride is about 95% (according to the generation of bisphosphoryl chloride).

[0041] After the second step, the first step is completed, the intermediate is left in the reaction flask, and the intermediate is kept in a liquid state (above 100° C.), and 1.0 g of aluminum trichloride is added to the material, and 4mol ( 376g) anhydrous liquid phenol; raise the temperature of the material to 110-120°C, start adding ph...

Embodiment 2

[0044] With embodiment 1, but replace the 1.2g aluminum trichloride among the example 1 with 2.0g magnesium chloride in the first step reaction, replace the 1.0g aluminum chloride among the example 1 with the 1.6g magnesium chloride in the second step reaction. The total yield of the QDP finished product of Example 2 is 82.5%, and the content of n=1 component in the finished product is 83%.

Embodiment 3

[0046] Same as Example 1, but replace 6mmol phosphorus oxychloride in example 1 with 4mmol phosphorus oxychloride in the first step reaction, in the second step reaction and aftertreatment with example 1, the total yield of QDP finished product is 79.6%, finished product The content of n=1 component in it is 76%.

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Abstract

The invention relates to a halogen-free phosphate fire retardant used for engineering plastics and a method for producing the same, belonging to the engineering plastic fire retardant and the method for synthesizing the engineering plastic fire retardant technical field. The chemical name of the fire retardant is hydroquinone double phenyl bisphosphate oligomer, and the chemical structural formula is shown on the bottom right. The method comprises the following processing steps: firstly, the method adopts hydroquinone and phosphorus oxychloride as raw materials and a lewis acid as a catalyst for heating reaction; and secondly, the reaction mixture is heated up and dripped with phenol for reaction by taking the lewis acid as the catalyst. The production method has sufficient supply of the raw materials and simple reaction conditions, can reduce the manufacturing cost, and makes products have obvious price advantage; and simultaneously the material has the characteristics of zero halogen, low smoke, low toxity, low corrosiveness, high heat distortion temperature, good fire resistance, good processability, capability of being recycled, etc., and can be widely used as the fire retardant of various engineering plastics.

Description

technical field [0001] The invention belongs to the technical field of engineering plastic flame retardants and their synthesis methods, in particular to a halogen-free flame retardant hydroquinone bisphosphate phenyl ester oligomerization for PC, PA, PBT, PPO and alloy engineering plastics substances and their synthesis methods. Background technique [0002] Scientific experiments and years of practical experience have proved that the use of flame-retardant plastics and other flame-retardant materials is one of the most important strategic measures to improve the fire safety of products, protect people's lives and property, and protect the environment. It has attracted great attention and attention in various sectors of the national economy. Attention, and has become the manufacturer's due commitment to consumers. Since the beginning of the new century, various application fields of engineering plastics have put forward more and more stringent requirements for their flame ...

Claims

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Application Information

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IPC IPC(8): C08K5/523C09K21/12
Inventor 金译平吕云兴王轶
Owner ZHEJIANG WANSHENG
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