Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of aromatic and aliphatic chain co-brominated high molecular polymer and its preparation method

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, low molecular weight, and high production energy consumption, and achieves simple and easy post-processing methods and raw material utilization. High, good product quality effect

Active Publication Date: 2022-06-14
SHANDONG RUNKE CHEM
View PDF7 Cites 0 Cited by
  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of aromatic and aliphatic chain co-brominated high molecular polymer and its preparation method
  • A kind of aromatic and aliphatic chain co-brominated high molecular polymer and its preparation method
  • A kind of aromatic and aliphatic chain co-brominated high molecular polymer and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] An aromatic and aliphatic chain co-brominated high molecular polymer, its structural formula is:

[0030]

[0031] The specific preparation method includes the following steps in turn:

[0032] (1) Fatty chain bromination: add 240g of methylene chloride and 30g of styrene butadiene polymer to a 1000ml four-necked bottle, stir and dissolve, and set aside for later use. 60g of dichloromethane, 70g of liquid bromine, and 90g of tetraethylammonium bromide were added to a 500ml four-necked bottle to prepare a solution of tetraethylammonium tribromide in dichloromethane, for subsequent use. The reaction temperature of the 1000ml four-necked flask was controlled to be 10°C, and the pre-prepared tetraethylammonium tribromide dichloromethane solution was poured into the styrene butadiene polymer solution to carry out bromination reaction for 10 hours. After the reaction was completed, 100 ml of water was added, and tetraethylammonium bromide was recovered by washing with wat...

Embodiment 2

[0036] A kind of macromolecular polymerization of aromatic and aliphatic chains co-brominated, its structural formula is:

[0037]

[0038] The specific preparation method includes the following steps in turn:

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

Embodiment 3

[0043] An aromatic and aliphatic chain co-brominated high molecular polymer, its structural formula is:

[0044]

[0045] The specific preparation method includes the following steps in turn:

[0046] (1) Fatty chain bromination: add 150g of chlorobenzene and 30g of styrene butadiene polymer into a 1000ml four-necked bottle, stir and dissolve, and set aside for later use. Add 50g of chlorobenzene, 70g of liquid bromine, and 53g of benzyltrimethylammonium bromide to a 500ml four-necked bottle, and prepare a solution of benzyltrimethylammonium tribromide in chlorobenzene, for subsequent use. The reaction temperature of the 1000ml four-necked flask was controlled to be 17°C, and the pre-prepared solution of benzyltrimethylammonium tribromide in chlorobenzene was poured into the styrene butadiene polymer solution to carry out bromination reaction for 13 hours. After the reaction was completed, 100 ml of water was added, and benzyl trimethyl ammonium bromide was recovered by wa...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
softening pointaaaaaaaaaa
softening pointaaaaaaaaaa
Login to View More

Abstract

The invention relates to a high molecular polymer with co-bromination of aromatic and aliphatic chains and its preparation method, which solves the problems of low product molecular weight, insufficient bromine content, poor product performance, complex synthesis process and difficult solvent recovery in the existing production process , A technical problem that affects the flame retardant performance and pollutes the environment. The present invention provides a kind of aromatic and aliphatic chain co-brominated high molecular polymer, which comprises the following steps in sequence: liquid bromine and quaternary ammonium salt are formulated into brominated quaternary ammonium salt solution, and styrene butadiene polymer is carried out Bromination reaction to obtain aliphatic chain bromide; carry out bromination reaction of aliphatic chain bromide and brominating agent under the action of a catalyst to obtain aromatic brominated products; post-treatment to obtain high molecular weight polymers co-brominated with aromatic and aliphatic chains. The invention is widely used in 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-brominated aromatic and aliphatic chains and a preparation method. Background technique [0002] After years of use, it was 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 Programme 2010 Third Report monthly report). It is highly bioaccumulative and biomagnifying, with data showing toxic hazards to the human endocrine and reproductive systems. In 2013, the United Nations' Stockholm Convention on Persistent Organic Pollutants voted unanimously to ban the use of hexabromocyclododecane (HBCD) worldwide, which has been implemented in the United States, the European Union and Japan. [0003] On September 24, 2013, the U.S. Environmental Protection Agency (EPA) issued a draft report...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(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
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com