Acrylic ester core-shell polymer

A technology of acrylate and alkyl acrylate, applied in the field of acrylate core-shell polymers, which can solve problems such as poor core-shell binding force, poor compatibility, and poor impact properties of blends

Inactive Publication Date: 2005-03-09
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is that the core-shell material obtained in the prior art has poor compatibility between the core and the shell,

Method used

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  • Acrylic ester core-shell polymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 1) Preparation of alkyl acrylate polymer

[0032]Add 800 grams of deionized water, 0.5 grams of sodium dodecylbenzenesulfonate, 80 grams of butyl acrylate, and 2 grams of hexamethylene diacrylate into a polymerization kettle equipped with a thermometer, a stirrer, a nitrogen gas introduction device, and a monomer feeding device. alcohol esters. The temperature of the reactant was raised to 70° C. with stirring, and nitrogen gas was continuously blown in. After the reaction was initiated, continuously add the pre-emulsion containing 800 gram deionized water, 10 gram sodium dodecylbenzenesulfonate, 680 gram butyl acrylate, 18 gram hexanediol diacrylate and 7.5 gram ammonium persulfate, about Added within 2 hours. After the dropwise addition, the reaction was continued for 2 hours to obtain an alkyl acrylate polymer latex (A) with a particle diameter of 200 nanometers.

[0033] 2) Preparation of a copolymer of alkyl acrylate-methyl methacrylate

[0034] Add 0.3 grams o...

Embodiment 2

[0051] The preparation process is similar to that of Example 1, except that the amount of methyl methacrylate added in the process 3) in the preparation of the methyl methacrylate polymer is 247 grams. The maximum temperature rise during this process was about 3°C.

[0052] The acrylate core-shell polymer prepared in this example is prepared into a polyvinyl chloride blend according to the preparation process in Example 1. The performance test results are shown in Table 1, and the dynamic mechanical thermal analysis spectrum of the acrylate core-shell polymer is shown in figure 2 .

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Abstract

A core-shell polymer of acrylate with high adhesive between core and shell for modifying polyvinyl chloride features that the alkyl acrylate is used as its core, methyl methylacrylate is used as its shell, and the alkyl acrylate-methyl methylacrylate is used to link core with shell.

Description

technical field [0001] The present invention relates to an acrylate core-shell polymer, in particular to an acrylate core-shell polymer with a core and shell monomer copolymer compatibilizer between its core and shell. Background technique [0002] Polyvinyl chloride is widely used due to its excellent mechanical properties and chemical properties. However, due to its poor impact resistance, polyvinyl chloride resin itself needs to add impact modifiers to improve its impact properties. At present, methacrylic acid is more widely used. Methyl ester-butadiene-styrene graft copolymer (MBS), but because the double bonds in MBS make it easy to degrade under ultraviolet light, the impact performance of polyvinyl chloride modified with MBS will decrease when it is used outdoors for a long time More, poor weather resistance. Weatherable PVC impact modifiers are typically based on acrylate core-shell polymers and have been widely used in outdoor applicati...

Claims

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Application Information

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IPC IPC(8): C08F220/10
Inventor 周文乐赵申谭宏亮沈志刚
Owner CHINA PETROLEUM & CHEM CORP
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