Commercial producing method for poly aromatic ether nitrile high molecular halogen-free fire retardant

A technology of nitrile polymers and production methods, which is applied in the direction of fire-resistant coatings, etc., can solve problems such as poor temperature resistance, affecting processing performance, and low production volume proportion, and achieve excellent heat aging resistance, flame retardancy, and processing performance. Good results

Inactive Publication Date: 2006-08-23
YANGZHOU TIANCHEN FINE CHEM
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AI Technical Summary

Problems solved by technology

The advantages of halogen flame retardants are less dosage, high flame retardant efficiency, and wide adaptability, but their serious disadvantages are that they generate a lot of smoke and toxic and corrosive gases during combustion, which is very harmful.
[0003] High-efficiency halogen-free polymer flame retardants are the main direction of flame retardant research in the world today. At present, the organic halides normally used in China, and some halogen-free flame retardants are small molecular compounds, which produce a lot of smoke and are toxic and highly corrosive when burned. volatile gas,

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0012] 1. After mixing 400 kg of 2,6-dichlorobenzonitrile, 200-300 kg of polyphenol and 300-350 kg of polyol, put them into the reactor. The reaction temperature is controlled at 300-350°C, and the pressure is controlled at 2.0-2.5Mpa to carry out the entire reaction process from hydroxylation, esterification to polymerization. The reaction time is controlled within 6-10 hours and then the material is discharged to obtain the polyarylene ether nitrile polymer.

[0013] 2. The reaction mixture is cooled to normal temperature, washed with water, separated, and dried to obtain polyarylene ether nitrile polymer.

[0014] 3. The polyarylene ether nitrile polymer pulverizer is crushed, and the fineness is controlled between 80 and 200 mesh.

[0015] 4. Mix 70kg of the pulverized polyarylene ether nitrile polymer with 30kg of antimony trioxide, then granulate and package to make 100kg polyarylene ether nitrile polymer high-efficiency halogen-free flame retardant.

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Abstract

The present invention provides a industrial production process of halogen-free fire retardant of polyarylene ether nitrile, and relates to the production of polymer. The polyarylene ether nitrile is prepared with 2, 6-dichloro benzonitrile, polyatomic phenol and polybasic alcohol as material and through hydroxylation, esterification, polymerization to obtain oligomer of molecular weight 3000-5000. The high efficiency halogen-free fire retardant is used widely in plastic industry, and has high fire retardant performance up to 0.8mm IL94-Vo grade, oxygen index (LOI) over 32, less smoke, low smoke tolerance, and heat resistance of 400-500deg.c and other good performance.

Description

technical field [0001] The invention relates to a production process of a plastic polymer. Background technique [0002] There are many kinds of flame retardants. Currently, the commonly used flame retardants are: organic halogen (bromine and chlorine), organic phosphorus and inorganic. With the rapid development of the national economy, plastic products are more and more widely used in various fields of production and life, but at the same time, floods caused by the flammability of plastics have also brought casualties and economic losses. Therefore, since the 1960s, some developed countries have begun to produce and apply flame-retardant plastics. In the 1970s, the consumption and variety of foreign flame retardants increased rapidly, with an annual growth rate of 6-8%. The American Business Communications Corporation (BCC) predicted that the annual growth rate of flame retardants was 5.2%. my country's flame retardant research started late. In 1985, there were only more...

Claims

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Application Information

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IPC IPC(8): C08G65/40C09K21/14
Inventor 陈国云刘孝波刘润兴
Owner YANGZHOU TIANCHEN FINE CHEM
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