Method for preparing maleic anhydride-grafted 1,2-polybutadiene

A technology of maleic anhydride and polybutadiene is applied in the field of preparation of polymer materials and can solve unseen problems and the like

Inactive Publication Date: 2015-01-07
SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no report on the maleic anhydride modification of high molecular weight, 1,2-structure and unterminated polybutadiene, and no technical indicators of modified 1,2-polybutadiene report

Method used

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  • Method for preparing maleic anhydride-grafted 1,2-polybutadiene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Put 15g of polybutadiene and 200ml of xylene into a 500ml three-necked bottle, keep the temperature at 65°C, after the polybutadiene is completely dissolved, raise the temperature to 85°C, slowly add 3.2g of maleic anhydride, 0.6g of acetyl The xylene solution of aniline, stirred for 5 minutes after the dropwise addition, slowly added the xylene solution containing 3.2g of BPO into the three-necked flask within 20 minutes, and continued to react for 2 hours at a constant temperature. After the reaction, the product was poured out , adding absolute ethanol for precipitation, settling for a period of time, suction filtration, extraction with acetone for 12 hours, and vacuum drying in an oven at 25°C for 12 hours to obtain a white solid product.

Embodiment 2

[0017] Put 15g of polybutadiene and 200ml of xylene into a 500ml three-necked bottle, keep the temperature at 65°C, wait until the polybutadiene is completely dissolved, raise the temperature to 85°C, slowly add 1.8g of maleic anhydride, 0.3g of acetanilide into the system The xylene solution was stirred for 5 minutes after the dropwise addition, and the xylene solution containing 1.8g of BPO was slowly added dropwise to the system within 20 minutes, and the reaction was continued for 2 hours at a constant temperature. Precipitate with water and ethanol, settle for a period of time, filter with suction, extract with acetone for 12 hours, and put it into a 25°C oven for 12 hours to dry under vacuum to obtain a white solid product.

Embodiment 3

[0019] Put 10g of polybutadiene and 150ml of xylene into a 500ml three-necked bottle, and keep the temperature at 65°C. After the polybutadiene is completely dissolved, raise the temperature to 85°C, and slowly add 3.2g of maleic anhydride and 0.6g of acetanilide into the system. The xylene solution was stirred for 5 minutes after the dropwise addition, and the xylene solution containing 3.2g of BPO was slowly added dropwise to the system within 20 minutes, and the reaction was continued for 2 hours at a constant temperature. After the reaction was completed, the product was poured out and added without Precipitate with water and ethanol, settle for a period of time, filter with suction, extract with acetone for 12 hours, and put it into a 25°C oven for 12 hours to dry under vacuum to obtain a white solid product.

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Abstract

The invention discloses a method for preparing maleic anhydride-grafted1,2-polybutadiene and relates to a method for preparing polymer materials. The invention provides a synthesis of 1,2-polybutadiene modified with maleic anhydride and a preparation method of 1,2-polybutadiene modified with maleic anhydride. The maleic anhydride-grafted 1,2-polybutadiene is prepared by virtue of a solution blending grafting method, a reactive polar maleic anhydride group is grafted to a double bond on a macromolecular branched chain of 1,2-polybutadiene; due to introduction of the reactive polar maleic anhydride group, the polarity of 1,2-polybutadiene is changed and thus certain novel special properties such as improved heat resistance, fatigue resistance, aging resistance, solvent resistance and processing properties are endowed on 1,2-polybutadiene. The maleic anhydride-grafted 1,2-polybutadiene prepared by the invention can be used for toughening modification of other polymer materials (such as nylon and epoxy resin).

Description

Technical field [0001] The present invention involves a preparation method of polymer materials, especially the preparation method of a pagodotyne of 1,2-polyterane. Background technique [0002] Polyteenne is a common type of polymer material. Because there is a reactive dual -key official group in the molecular or branches, it can be widely used in coatings, adhesives, pouring rubber products, embedded materials, rubber, rubberIn the 1970s, the auxiliary areas, especially the successful application of rocket solid fuel pushing agents in the 1970s and 1980s, have developed rapidly, becoming an important category of polymer materials.However, because the 1,2-polytraxeniene molecular chain is a simple carbon chain structure, there is no polar group, which limits its application range to a certain extent.In order to further improve the performance of 1,2-polyterane, broaden its application field, and the development of chemical branches has become increasingly becoming a popular de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F279/00C08F222/06
Inventor 何晓峰梁佳蓓张华葛铁军孙佳琪
Owner SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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