Grafted copolymer containing epoxy groups and application of grafted copolymer

A graft copolymer and epoxy group technology, which is applied in the synthesis and application of graft copolymers, can solve problems such as incompatibility and limited application, achieve good compatibilization effect, and enhance the combination between two phases. strength, the effect of improving compatibility

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 to a certain extent.

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Under the protection of nitrogen, mix and stir 80g methyl methacrylate, 20g ethyl acrylate, 1.5g chain transfer agent mercaptopropanol, 4.5g initiator azobisisobutyronitrile and 200g solvent toluene, and then 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 polymer C containing a carbon-carbon double bond was obtained, and the number average molecular weight of the obtained polymer C was about 4200 through GPC testing.

[0051] Under nitrogen protection, 80g methyl methacrylate, 4...

Embodiment 2

[0053] Under nitrogen protection, after mixing and stirring 60g methyl methacrylate, 50g butyl acrylate, 1.5g chain transfer agent mercaptopropanol, 3.5g initiator azobisisobutyronitrile and 250g solvent xylene, move to a In a four-neck flask with a stirring blade, a condenser and a thermometer, heat to 65°C and react for 6 hours to obtain a xylene 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 carbon-carbon double bond-containing monomer E methacryloyl chloride (the molar ratio of polymer D to monomer E is 1:1.2), stirred at room temperature for 5 hours, and the product was dried by rotary evaporation , to obtain a carbon-carbon double bond-containing polymer C. According to the GPC test, it can be seen that the number average molecular weight of the obtained polymer C is about 5100.

[0054] Under nitrogen protection, 110g of styrene, 20g of ethyl acrylat...

Embodiment 3

[0056] Under the protection of nitrogen, mix and stir 80g ethyl methacrylate, 40g butyl acrylate, 2g chain transfer agent mercaptoethanol, 1.2g initiator azobisisoheptanonitrile and 150g solvent ethyl acetate, and then move to a stirring Paddle, condenser and a four-necked flask with a thermometer, heated to 70°C, and reacted for 5 hours to obtain an ethyl acetate solution containing polymer D; the reaction system was lowered to room temperature, and 0.01g of polymerization inhibitor hydroquinone, 0.02g catalyst triethylamine and 5.0g carbon-carbon double bond-containing monomer E isocyanoethyl methacrylate (the molar ratio of polymer D to monomer E is 1:1.25), after stirring at room temperature for 10 hours, the product After rotary evaporation and drying, a high molecular polymer C containing carbon-carbon double bonds is obtained. According to the GPC test, it can be seen that the number average molecular weight of the obtained polymer C is about 11900.

[0057] Under nitr...

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Abstract

The invention discloses a grafted copolymer containing epoxy groups and application of the grafted copolymer. The grafted copolymer is a polymer containing the epoxy groups and high-molecular copolymer side chains and is mainly prepared from 40wt%-90wt% of a monomer A containing carbon-carbon double bonds, 5wt%-30wt% of an unsaturated monomer B containing the epoxy groups and 5wt%-30wt% of a high-molecular polymer C containing the carbon-carbon double bonds through free radical polymerization copolymerization. The grafted copolymer is prepared by the following steps: firstly carrying out freeradical 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 finallycarrying 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 epoxy groups. The grafted copolymer containing the epoxy groups can be used as a compatibilizer for polymer blends and a chain extender for polymers.

Description

technical field [0001] The invention relates to the synthesis and application fields of graft copolymers, in particular to an epoxy 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 polymer blends, phase separation due to differences in chemical structure, polarity, molecular weight (viscosity) and crystallinity between the components results in poor performance of the polymer blend. 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 manufacturers and competito...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F265/06C08F265/04C08F220/14C08F220/18C08F220/32C08F216/14C08F212/12C08F220/44C08F8/30C08F8/00
CPCC08F8/00C08F8/30C08F220/14C08F265/04C08F265/06C08F220/1804C08F220/325C08F8/44C08F220/1802C08F212/08C08F212/12C08F220/44C08F220/1808C08F216/1416C08F216/14C08F290/04C08L51/00
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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