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Core/shell structure resin and polymerization method thereof

A technology of shell structure and resin, which is applied in the field of polymer material preparation, can solve the problems of low impact performance, achieve the effect of improving weather resistance level, broadening application range, and broad application field

Inactive Publication Date: 2022-03-01
山东颐工材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the presence of butyl acrylate rubber, ASA resins have excellent weather resistance but low impact properties

Method used

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  • Core/shell structure resin and polymerization method thereof
  • Core/shell structure resin and polymerization method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Synthetic Polybutadiene Latex

[0037] (1) The polymerization reaction is carried out in a 10L pressure-resistant polymerization kettle, and the reaction process is carried out under the protection of nitrogen;

[0038] (2) Add to the reactor: 25% disproportionated rosin soap: 211g, 10% oleic acid soap: 66g, sodium lauryl sulfate: 6.6g, potassium persulfate: 11g, potassium carbonate: 14g, deionized water: 4200g;

[0039] (3) After stirring and mixing evenly, add butadiene: 2770g, 1,6-hexanediol diacrylate: 69g, dodecyl mercaptan 11g;

[0040] (4) When the temperature rises to 65°C in 1 hour. The adiabatic reaction is performed at 65°C, the reaction temperature is controlled not to exceed 85°C, and the reaction pressure is not to exceed 0.9MPa. React for about 15 hours until the conversion rate reaches 98%, and the reaction is terminated. And adjust TSC=38%.

Embodiment 2

[0042] (1) In a 2000ml polymerization kettle, take 236.8g of the PBL latex synthesized in Example 1, add 2.34g of sodium lauryl sulfate, 228g of deionized water, and stir for 30 minutes under nitrogen protection.

[0043] (2) Preparation of initiator solution: Dissolve 1.05 g of potassium persulfate in 66 g of deionized water. Preparation of butyl acrylate monomer: 0.84 g of dodecyl mercaptan was dissolved in 210 g of butyl acrylate.

[0044] (3) Raise the temperature of the 2000ml polymerization kettle to 65°C, and add dropwise synchronously: the initiator solution and butyl acrylate monomer are added dropwise for 1.5 hours, and react for 2 hours under nitrogen protection, and the conversion rate can reach more than 98%.

[0045] The second step: shell grafting.

[0046] (1) Add 4.5g of sodium lauryl sulfate and 360g of deionized water, and stir for 30 minutes.

[0047] (2) Preparation of initiator solution: 1.2 g of potassium persulfate was dissolved in 80 g of deionized w...

Embodiment 3

[0058] The first step: the second layer of core latex synthesis.

[0059] (1) In a 2000ml polymerization kettle, take 315.8g of the PBL latex synthesized in Example 1, add 1.62g of sodium lauryl sulfate, 176g of deionized water, and stir for 30 minutes under nitrogen protection.

[0060] (2) Preparation of initiator solution: Dissolve 0.9 g of potassium persulfate in 66 g of deionized water. Preparation of butyl acrylate monomer: Dissolve 0.72 g of dodecanethiol in 180 g of butyl acrylate.

[0061] (3) Raise the temperature of 2000ml polymerization kettle to 65°C, and add dropwise simultaneously: initiator solution and butyl acrylate monomer, add dropwise simultaneously for 1-1.5 hours, react under nitrogen protection for 2 hours, and the conversion rate can reach more than 98%.

[0062] The second step: shell grafting.

[0063] (1) Add 4.5g of sodium lauryl sulfate and 360g of deionized water, and stir for 30 minutes.

[0064] (2) Preparation of initiator solution: 1.2 g of ...

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Abstract

The invention provides core / shell structure resin and a polymerization method thereof, and belongs to the technical field of high polymer material preparation. The core / shell structure resin provided by the invention is butadiene-butyl acrylate-styrene-acrylonitrile, and the polymerization method of the core / shell structure resin comprises the following steps: taking butadiene as a first layer core and butyl acrylate as a second layer core through free radical emulsion polymerization, and then grafting a styrene-acrylonitrile copolymer to obtain the core / shell structure resin. And synthesizing the butadiene-butyl acrylate-styrene-acrylonitrile copolymer with the core / shell structure. The copolymer has weatherability higher than that of ABS (acrylonitrile butadiene styrene) and impact resistance higher than that of ASA (acrylonitrile styrene acrylate).

Description

technical field [0001] The invention relates to the technical field of polymer material preparation, in particular to a core / shell structure resin and a polymerization method thereof. Background technique [0002] ABS resin has a two-phase structure, polybutadiene rubber is the dispersed phase, and SAN (styrene-acrylonitrile copolymer, also known as AS) as the matrix resin is the continuous phase. Due to the presence of polybutadiene rubber, the impact performance of ABS resin is very high, but due to the existence of residual double bonds, the weather resistance of ABS resin is very poor. [0003] ASA resin also has a two-phase structure, polybutylacrylate rubber is the dispersed phase, and SAN (styrene-acrylonitrile copolymer, also known as AS) as the matrix resin is the continuous phase. Due to the presence of butyl acrylate rubber, ASA resins have excellent weather resistance but low impact properties. [0004] Therefore, a new type of resin with more excellent compreh...

Claims

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Application Information

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IPC IPC(8): C08F279/04C08F212/08C08F220/44
CPCC08F279/04C08F212/08C08F220/44
Inventor 万德松林润雄李景亮吴志朋杜如国杨长臻刘树春王泷正
Owner 山东颐工材料科技股份有限公司
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