Preparation method of emulsion type adhesion promoter for polyolefin plastics

An adhesion promoter and emulsion-type technology, which is applied in the coating and other directions, can solve the problems of harsh emulsion preparation conditions and difficult process control, and achieve the effects of avoiding poor compatibility, simplifying the coating process, and reducing emissions

Inactive Publication Date: 2009-12-30
XI AN JIAOTONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to enhance the water resistance of the coating film, non-ionic emulsifiers are generally used to emulsify chlorinated polyolefins. During the implementation process, high temperature and high pressure are required, resulting in harsh emulsion preparation conditions and difficult control of the process.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] First, add 8 parts of CPP, 32 parts of xylene, 1 part of sulfonated castor oil and 2 parts of SDS into the reaction kettle according to the parts by mass, raise the temperature to 60°C, stir and mix evenly to obtain a mixed solution; Add 57 parts of distilled water to the solution, stir and keep warm for 3 hours after the dropwise addition; finally, cool the mixture in the kettle to room temperature, then add ammonia water to it, adjust the pH of the emulsion to 8-9, and obtain the emulsion-type adhesion promoter.

Embodiment 2

[0019] First, add 6 parts of chlorinated polyethylene, 34 parts of mixed solvent of butyl acetate and xylene, 0.9 parts of sulfonated castor oil and 1.8 parts of SDS into the reaction kettle according to the parts by mass, raise the temperature to 70°C, stir and mix evenly to obtain Mix the solution; then, add 57.3 parts of distilled water to the mixed solution under stirring, and then stir and keep warm for 2 hours after the dropwise addition; finally, cool the mixture in the kettle to room temperature, and then add diethylamine to it to adjust the pH of the emulsion to 8~ 9. The emulsion-type adhesion promoter is obtained.

Embodiment 3

[0021] First, add 12 parts of chlorinated ethylene-vinyl acetate copolymer, 30 parts of mixed solvent of xylene and toluene, 1.12 parts of sulfonated castor oil and 2.24 parts of SDS into the reactor according to the parts by mass, raise the temperature to 70°C, stir and mix Obtain a mixed solution evenly; then, add 54.64 parts of distilled water to the mixed solution under stirring, and then stir and keep warm for 1 hour after the dropwise addition; finally, cool the mixture in the kettle to room temperature, and then add triethylamine to it to adjust the pH of the emulsion to 8 ~9, the emulsion-type adhesion promoter is obtained.

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PUM

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Abstract

The invention discloses a preparation method of emulsion type adhesion promoter for polyolefin plastics. The emulsion type adhesion promoter for polyolefin plastics is obtained through dispersing and emulsifying chlorinated polyolefin, organic solvent, emulsifying agent and water under a proper condition. A small quantity of organic solvent facilitates dispersing chlorinated polyolefin resin in the emulsion preparation process; and the swelling role of organic solvent to polyolefine also ensures good adhesive attraction of a coating layer to a substrate when the emulsion is formed into a film. Compared with a similar solvent based product, the emulsion type polyolefine adhesion promoter lowers the use amount of the organic solvent and has the adhesion property which can be compared with the similar solvent based product. The emulsion type adhesion promoter for polyolefin plastics has simple preparation process, low price, favorable construction property, small environment pressure and wide market prospect.

Description

technical field [0001] The invention relates to a preparation method of an emulsion-type adhesion promoter, in particular to a preparation method of an emulsion-type adhesion promoter for polyolefin plastics. Background technique [0002] Polyolefins can generally refer to alpha-olefins such as ethylene, propylene, 1-butene, 1-pentene, 1-octene and homopolymers or copolymers of certain cycloolefins (the present invention mainly relates to polyethylene, polypropylene, Copolymers of ethylene and propylene), which have good properties such as low price, easy processing, and corrosion resistance, are widely used as product processing materials in industries such as automobiles, home appliances, and construction. In order to make the product beautiful and durable, it is often necessary to coat polyolefin plastics. However, polyolefin plastics have low surface energy and high crystallinity, resulting in poor solubility and wettability, and poor adhesion to coatings. In order to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/07C08L23/28C09D7/12
Inventor 井新利赵爱华李瑜朱一韦顾一平
Owner XI AN JIAOTONG UNIV
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