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Aromatic and aliphatic chain co-brominated high-molecular polymer and preparation method thereof

A high-molecular polymer and aliphatic chain technology, which is applied in the field of flame retardant synthesis, can solve the problems of inaccurate bromination of products, high production energy consumption, and low molecular weight, and achieve simple and easy post-processing methods and high product quality. Good, high raw material utilization effect

Active Publication Date: 2020-12-15
SHANDONG RUNKE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For now, the existing synthesis process uses bromine to directly brominate in one step under high temperature conditions, and the product cannot be accurately brominated, and only the bromination on the aliphatic chain is realized, and the product performance is relatively poor (the bromine content is about 63% , 5% thermal weight loss is only 245°C, and the softening point is about 110°C), the relative molecular weight is low, and a series of key technical problems such as high production energy consumption

Method used

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  • Aromatic and aliphatic chain co-brominated high-molecular polymer and preparation method thereof
  • Aromatic and aliphatic chain co-brominated high-molecular polymer and preparation method thereof
  • Aromatic and aliphatic chain co-brominated high-molecular polymer and preparation method thereof

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Effect test

Embodiment 1

[0029] A high molecular polymer with aromatic and aliphatic chains co-brominated, its structural formula is:

[0030]

[0031] Concrete preparation method comprises the following steps in turn:

[0032] (1) Fatty chain bromination: Add 240 g of dichloromethane and 30 g of styrene-butadiene polymer into a 1000 ml four-necked bottle, stir to dissolve, and set aside. Add 60g of dichloromethane, 70g of liquid bromine, and 90g of tetraethylammonium bromide into a 500ml four-necked bottle to prepare a solution of tetraethylammonium tribromide in dichloromethane for future use. The reaction temperature of the 1000ml four-necked flask was controlled at 10°C, and the pre-prepared tetraethylammonium tribromide dichloromethane solution was poured into the styrene butadiene polymer solution to carry out the bromination reaction for 10 hours. After the reaction was completed, 100ml of water was added, washed with water to recover tetraethylammonium bromide, and used mechanically to pre...

Embodiment 2

[0036] A macromolecular polymerization in which aromatic and aliphatic chains are co-brominated, and its structural formula is:

[0037]

[0038] Concrete preparation method comprises the following steps in turn:

[0039](1) Fatty chain bromination: Add 210 g of dichloroethane and 30 g of styrene-butadiene polymer into a 1000 ml four-necked bottle, stir to dissolve, and set aside. Add 50g of dichloroethane, 70g of liquid bromine, and 100g of tetrabutylammonium bromide into a 500ml four-necked bottle to prepare tetrabutylammonium tribromide dichloroethane solution for later use. The reaction temperature of the 1000ml four-necked flask was controlled at 15°C, and the pre-prepared solution of tetrabutylammonium tribromide dichloroethane was poured into the styrene butadiene polymer solution to carry out the bromination reaction for 13 hours. After the reaction, 100ml of water was added, washed with water to recover tetrabutylammonium bromide, and used mechanically to prepare ...

Embodiment 3

[0043] A high molecular polymer with aromatic and aliphatic chains co-brominated, its structural formula is:

[0044]

[0045] Concrete preparation method comprises the following steps in turn:

[0046] (1) Fatty chain bromination: Add 150 g of chlorobenzene and 30 g of styrene butadiene polymer into a 1000 ml four-necked bottle, stir to dissolve, and set aside. Add 50g of chlorobenzene, 70g of liquid bromine, and 53g of benzyltrimethylammonium bromide into a 500ml four-necked bottle to prepare a benzyltrimethylammoniumtribromide chlorobenzene solution for future use. The reaction temperature of the 1000ml four-necked flask was controlled at 17°C, and the pre-prepared benzyltrimethylammonium tribromide chlorobenzene solution was poured into the styrene butadiene polymer solution to carry out the bromination reaction for 13 hours. After the reaction is finished, add 100ml of water, wash with water to recover benzyltrimethylammonium bromide, and prepare benzyltrimethylammoni...

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Abstract

The invention relates to an aromatic and aliphatic chain co-brominated high-molecular polymer and a preparation method thereof, and solves the technical problems of low product molecular weight, insufficient bromine content, poorer product performance, complex synthesis process, difficulty in solvent recovery, influence on flame retardancy and environmental pollution in the existing production process. The invention provides an aromatic and aliphatic chain co-brominated high-molecular polymer, which sequentially comprises the following steps: preparing a brominated quaternary ammonium salt solution from liquid bromine and quaternary ammonium salt, and carrying out bromination reaction on the brominated quaternary ammonium salt solution and a styrene-butadiene polymer to obtain an aliphaticchain bromide; carrying out bromination reaction on the aliphatic chain bromide and a brominating agent under the action of a catalyst to obtain an aromatic bromination product; and carrying out post-treatment to obtain the aromatic and aliphatic chain co-brominated high-molecular polymer. The polymer and preparation method are widely applied to the technical field of flame retardant synthesis.

Description

technical field [0001] The invention relates to the technical field of flame retardant synthesis, in particular to a high molecular polymer with co-bromination of aromatic and aliphatic chains and a preparation method thereof. Background technique [0002] After years of use, it has been found that hexabromocyclododecane is a persistent organic pollutant (POPs), which has been established as a controlled substance by the EU ROHS directive; UNEP / PCPS / COP.1 / 26 (United Nations Environment Program 2010 Third Report monthly report). It has strong bioaccumulation and biomagnification, and data show that it is toxic to the human endocrine system and reproductive system. In 2013, the United Nations "Stockholm Convention on Persistent Organic Pollutants" voted unanimously to adopt a ban: a global ban on the use of hexabromocyclododecane (HBCD), which has been implemented in the United States, the European Union and Japan. [0003] On September 24, 2013, the US Environmental Protect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F8/22C08F8/20C08F236/10
CPCC08F8/22C08F8/20C08F236/10
Inventor 杨海洲王东全吴多坤秦善宝
Owner SHANDONG RUNKE CHEM
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