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Grafted copolymer containing reactive groups and application of grafted copolymer

A reactive group, graft copolymer technology, applied in the synthesis and application of graft copolymers, can solve problems such as incompatibility, limited application scope, etc., to improve molecular weight, improve compatibility, The effect of high molecular weight

Active Publication Date: 2018-07-03
KINGFA SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Nevertheless, the polymer segment of the side chain of the compatibilizer in this patent is mainly a homopolymer of methacrylate or acrylate monomers, and in practical applications, the side chain and another phase state are often not very good. compatible
At the same time, a single homopolymer on the side chain of the compatibilizer has specific polarity and solubility parameters, which also limits its application range to a certain extent.

Method used

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  • Grafted copolymer containing reactive groups and application of grafted copolymer
  • Grafted copolymer containing reactive groups and application of grafted copolymer
  • Grafted copolymer containing reactive groups and application of grafted copolymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Under the protection of nitrogen, mix and stir 60g methyl methacrylate, 50g ethyl acrylate, 1.5g chain transfer agent mercaptopropanol, 3.5g initiator azobisisobutyronitrile and 200g solvent toluene, and move to a stirring In a four-necked flask with a paddle, a condenser and a thermometer, heat to 65°C, and react for 6 hours to obtain a toluene solution containing polymer D; lower the reaction system to room temperature, add 0.01g of polymerization inhibitor hydroquinone, 0.04g Catalyst N,N-dimethylbenzylamine and 2.1g of monomer E methacryloyl chloride containing carbon-carbon double bonds (the molar ratio of polymer D to monomer E is 1:1.2), after stirring at room temperature for 8 hours, the product After rotary evaporation and drying, a high molecular polymer C containing carbon-carbon double bonds is obtained. Pass GPC test, such as figure 1 As shown, it can be seen that the number average molecular weight of the obtained high molecular weight polymer C is about ...

Embodiment 2

[0058] Under the protection of nitrogen, mix and stir 80g methyl methacrylate, 20g butyl acrylate, 1.5g chain transfer agent mercaptopropanol, 3.2g initiator azobisisobutyronitrile and 200g solvent toluene, and move to a stirring In a four-necked flask with a paddle, a condenser and a thermometer, heat to 65°C and react for 6 hours to obtain a toluene solution containing polymer D; lower the reaction system to room temperature, add 0.01g of polymerization inhibitor hydroquinone, 0.02g Catalyst triethylamine and 2.1g of monomer E methacryloyl chloride containing carbon-carbon double bonds (the molar ratio of polymer D to monomer E is 1:1.2), stirred and reacted at room temperature for 6 hours, and the product was rotary evaporated and dried to obtain The high molecular weight polymer C containing carbon-carbon double bond can be known by GPC test that the number average molecular weight of the obtained high molecular weight polymer C is about 4200.

[0059] Under the protection...

Embodiment 3

[0061] Under the protection of nitrogen, mix and stir 80g methyl methacrylate, 20g ethyl acrylate, 3g chain transfer agent mercaptopropanol, 4.5g initiator azobisisobutyronitrile and 300g solvent toluene, and then move to the , a condenser and a thermometer in a four-neck flask, heated to 65°C, and after 6 hours of reaction, a toluene solution containing polymer D was obtained; the reaction system was lowered to room temperature, and 0.01g of inhibitor hydroquinone and catalyst triethyl Amine and 4.2g of monomer E methacrylic acid chloride containing carbon-carbon double bonds (the molar ratio of polymer D to monomer E is 1:1.2), stirred at room temperature for 6 hours, and the product was dried by rotary evaporation to obtain carbon-containing carbon As for the polymer C with double bonds, it can be seen that the number average molecular weight of the obtained polymer C is about 682 through GPC testing.

[0062] Under nitrogen protection, 80g methyl methacrylate, 30g butyl ac...

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Abstract

The invention discloses a grafted copolymer containing reactive groups and application of the grafted copolymer. The grafted copolymer is a polymer containing the reactive groups and high-molecular copolymer side chains and is mainly prepared from 20wt%-99wt% of a monomer A containing carbon-carbon double bonds, 0.5wt%-40wt% of an unsaturated monomer B containing the reactive groups and 0.5wt%-40wt% of a high-molecular polymer C containing carbon-carbon double bonds through free radical polymerization copolymerization. The grafted copolymer is prepared by the following steps: firstly carryingout free radical copolymerization so as to obtain a high-molecular polymer D, and preparing the high-molecular polymer C containing the carbon-carbon double bonds through reaction among the groups; and finally carrying out free radical polymerization on the obtained high-molecular polymer C, the monomer A and the monomer B, drying, and carrying out devolatilization, so as to obtain the grafted copolymer containing the reactive groups. The grafted copolymer containing the reactive groups can be used as a compatibilizer for polymer blends and glass fiber reinforced materials and a chain extenderfor polymers.

Description

technical field [0001] The invention relates to the synthesis and application fields of graft copolymers, in particular to a reactive group-containing acrylate graft copolymer and its application. Background technique [0002] Compatibilizer refers to the use of physical or chemical means to promote the combination of incompatible blending systems, and then obtain a stable blending system additives. For the blend system, due to the differences in chemical structure, polarity, molecular weight (viscosity) and crystallinity between the components, the phase separation is caused, resulting in poor performance of the blend system. Therefore, compatibilizers are the cornerstone of high-level blend modification products. Especially in the current market of raw materials and modified materials, the production formula and process flow of enterprises are mostly open and transparent, and the addition of compatibilizers has become the key to the differentiation of material modified ma...

Claims

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Application Information

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IPC IPC(8): C08F265/06C08F220/14C08F220/18C08F220/28C08F265/04C08F220/06C08F212/08C08F230/08C08F226/06C08F220/60C08F220/44C08F220/56C08L55/02C08L51/00C08K7/14C08L67/02
CPCC08F265/04C08F265/06C08L55/02C08L2205/03C08F230/085C08F220/1804C08F220/1802C08F220/20C08L51/003C08K7/14C08L67/02C08F220/281C08F212/08C08F230/08C08F220/60C08F220/1808C08F220/06C08F220/14C08F220/44C08F220/56C08F226/06C08L51/00
Inventor 李坤泉柴生勇刘振峰李积德孔蕾陈林刘勤李岩
Owner KINGFA SCI & TECH CO LTD
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