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Core-shell structure ionomer for PET resin toughening crystallization and method for making same

A core-shell structure and ionomer technology, applied in the field of core-shell structure ionomer and its preparation, can solve unseen problems and achieve the effects of improving processing performance, improving strength and toughness, and good compatibility

Inactive Publication Date: 2007-07-04
SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the field of plastic synthesis, it is mainly used as an impact modifier, such as the synthesis of impact-resistant modified (meth)acrylic polymers described in the patent of CN1185165A invented by the British Teijin Chemical Industry Co., Ltd., Rohm, USA The patent No. issued by and Haas company is US5,312,575 impact modifier ACR-II preparation technology patent, and these patents all apply core-shell particles to plastics such as polyvinyl chloride (PVC) as tougheners, but through Partially modified to form ionomers and used to improve the crystallization properties of PET resins, etc., as its nucleating agent has not been reported yet

Method used

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  • Core-shell structure ionomer for PET resin toughening crystallization and method for making same
  • Core-shell structure ionomer for PET resin toughening crystallization and method for making same
  • Core-shell structure ionomer for PET resin toughening crystallization and method for making same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Add 500g of deionized water, 2g of sodium dodecylbenzenesulfonate, 0.65g of ammonium persulfate and 50g of butyl acrylate containing 2wt% divinylbenzene into a 1000ml four-necked bottle, and react in a water bath at 60°C under nitrogen protection for 1h. Make seed lotion.

[0025] Add the pre-emulsion and 100g of 6wt% initiator deionized aqueous solution to the seed emulsion at 70°C at a rate of 1ml / min, and react for 1.5h after the addition to form a nuclear emulsion. The preparation process of the pre-emulsion is to uniformly mix 500g of butyl acrylate, 10g of divinylbenzene, 15g of sodium dodecylbenzene sulfonate, and 400g of deionized water to form a white emulsion. The process is complete.

[0026] Add shell layer mixed monomers and 50g 6wt% initiator deionized aqueous solution to the core emulsion at 80°C at a rate of 0.5ml / min, and react at 90°C for 1 hour after the addition to prepare the core-shell emulsion. The composition of the mixed shell monomers is 90g ...

Embodiment 2

[0029] Add 500g of deionized water, 3g of sodium dodecylsulfonate, 0.55g of potassium persulfate and 20g of isobutyl acrylate containing 3wt% trimethylolpropane triacrylate into a 1000ml four-necked bottle, and protect it in a water bath at 70°C under nitrogen Under the reaction for 1h, the seed emulsion was made.

[0030] Add pre-emulsion and 70g 4wt% initiator deionized aqueous solution to the seed emulsion at 75°C, the dropping rate is 1ml / min, and react for 1.5h after the dropping to make nuclear emulsion. The preparation process of the pre-emulsion is to mix 300g of isobutyl acrylate, 12g of trimethylolpropane triacrylate, 15g of sodium dodecylsulfonate, 4g of polyethylene glycol octylphenyl ether, and 250g of deionized water. Mix to form a white emulsion, and stand for 1 hour without delamination to indicate the completion of the pre-emulsification process.

[0031] Add the shell layer mixed monomer and 90g 4wt% initiator deionized aqueous solution to the core emulsion ...

Embodiment 3

[0034]Add 400g of deionized water, 2.5g of sodium lauryl sulfate, 0.45g of cumene hydroperoxide and 60g of styrene containing 2wt% diallyl phthalate into a 1000ml four-necked bottle, and set the water bath at 60°C under nitrogen React for 1 h under protection to make seed emulsion.

[0035] Add the pre-emulsion and 100g of 6wt% initiator deionized aqueous solution to the seed emulsion at 70°C at a rate of 1ml / min, and react for 1.5h after the addition to form a nuclear emulsion. The preparation process of the pre-emulsion is to uniformly mix 400g of styrene, 10g of methacryloxypropyl trimethoxy silicon, 13g of sodium lauryl sulfate, and 350g of deionized water into a white emulsion, and let it stand for 1h without delamination. After marking the completion of the pre-emulsification process.

[0036] Add shell layer mixed monomers and 50g 6wt% initiator deionized aqueous solution to the core emulsion at 80°C at a rate of 0.5ml / min, and react at 90°C for 1 hour after the additi...

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Abstract

The invention relates to a core-shell ionomer that is used to intensify the crystallization for PET resin and the method for preparing the same. In the beginning, the ionomer employs (methyl) acrylic acid monomer with glass- transition temperature of contained butyl acrylate far lower than room temperature for part polymerization and nucleation, employs monomer with glass- transition temperature of contained methyl methacrylate higher than room temperature and a plurality of unstaratured aliphatic acids containing methacrylic acid for polymerization and nucleation, then forms soft core / hard shell core-shell construction; then, neutralizing with base liquid to establish core-shell ionomer. The invention employs cheap monomer and substance, forms core-shell ionomer through emulsion polymerization, and applies it to the forming and extrusion for PET resin, which toughes and promotes the crystallization for PET, and widens its application in engineering plastic field with lower cost.

Description

technical field [0001] The invention relates to a high molecular polymer and a preparation method thereof, in particular to a core-shell structure ionomer used for PET resin toughening and crystallization and a preparation method thereof. Background technique [0002] Core-shell structure polymer is a kind of polymer with double-layer or multi-layer structure. Because of its unique shape and designable surface structure, core-shell structure particles have been widely used in impact modifiers, viscous agents, and synthetic materials. Membrane aids and carriers and supports in the field of biomedicine, etc., by selecting monomers and polymerization methods, the target particles can be designed and synthesized at the molecular level, and the particle size and monodispersity of core-shell particles can be easily controlled. It fulfills a specific function in the application. In the field of plastic synthesis, it is mainly used as an impact modifier, such as the synthesis of im...

Claims

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Application Information

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IPC IPC(8): C08F220/14C08F218/04C08F220/44C08F212/08C08F2/26C08F2/38
Inventor 邢志敏解廷秀杨桂生
Owner SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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