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Method for preparing synthetic wax

A technology for synthesizing wax and polyethylene wax, applied in coating and other directions, can solve the problems such as the difficulty of melting ultrafine polyethylene wax micropowder reaching above 110°C, the inability to flexibly adjust the hardness of ultrafine polyethylene wax micropowder, and the difficulty in satisfying users, etc. To achieve the effect of excellent external lubrication, excellent internal lubrication, and improve the overall mechanical properties

Active Publication Date: 2019-01-15
江苏金橡塑新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the melting point of general polyethylene wax is between 101°C and 110°C, so limited by the melting point of polyethylene wax, the melting point of ultrafine polyethylene wax micropowder is difficult to reach above 110°C
And because the texture of the raw material polyethylene wax is relatively soft, the wear resistance of ultrafine polyethylene wax micropowder products is poor, and ultrafine polyethylene wax micropowder products cannot meet user needs in areas requiring high wear resistance
Penetration is one of the important indicators of the performance of hardness. If the penetration is large, it means that its hardness is small. If the penetration is small, it means that its hardness is high. The degree of material hardness cannot be flexibly adjusted according to different application requirements
For example, in the field of glazing, polyethylene wax is required to have a higher hardness to improve the wiping performance of the glazing agent. Therefore, if the hardness of polyethylene wax is small, it is difficult to meet the requirements of users.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Firstly, a polyimide prepolymer is prepared: 1 part of 3,3′4,4′-benzophenone tetraacid dianhydride is weighed at room temperature, and prepared into a saturated solution in dimethyl sulfoxide solvent. Weigh 10 parts of polyisocyanate, prepare a saturated solution with o-phenylenediamine and add it to an oil bath magnetic stirrer for reaction at the same time. The reaction temperature is 70°C, the reaction time is 30min, and the rotation speed is 1500r / min, and then the temperature is raised to 140° C., the reaction time is 30 minutes, the reaction time is 30 minutes, and the rotation speed is 1000 r / min under the condition of nitrogen protection, and the polyimide prepolymer is obtained by cooling to room temperature and standing for 3 hours. The structure of the polyimide prepolymer was characterized according to relevant standards. Mix polyimide prepolymer with polyethylene wax, polypropylene wax and ethylene bis stearamide in N,N-dimethylformamide and add p-toluenesu...

Embodiment 2

[0022] Firstly, a polyimide prepolymer is prepared: 1 part of 3,3′4,4′-benzophenone tetraacid dianhydride is weighed at room temperature, and prepared into a saturated solution in dimethyl sulfoxide solvent. Weigh 10 parts of polyisocyanate, prepare a saturated solution with o-phenylenediamine and add it to an oil bath magnetic stirrer for reaction at the same time. The reaction temperature is 70°C, the reaction time is 30min, and the rotation speed is 1500r / min, and then the temperature is raised to 140° C., the reaction time is 30 minutes, the reaction time is 30 minutes, and the rotation speed is 1000 r / min under the condition of nitrogen protection, and the polyimide prepolymer is obtained by cooling to room temperature and standing for 3 hours. The structure of the polyimide prepolymer was characterized according to relevant standards. Mix polyimide prepolymer with polyethylene wax, polypropylene wax and erucamide in N,N-dimethylacetamide and add methanesulfonic acid, hea...

Embodiment 3

[0024] Firstly, a polyimide prepolymer is prepared: 1 part of 3,3′4,4′-benzophenone tetraacid dianhydride is weighed at room temperature, and prepared into a saturated solution in dimethyl sulfoxide solvent. Weigh 10 parts of polyisocyanate, prepare a saturated solution with o-phenylenediamine and add it to an oil bath magnetic stirrer for reaction at the same time. The reaction temperature is 70°C, the reaction time is 30min, and the rotation speed is 1500r / min, and then the temperature is raised to 140° C., the reaction time is 30 minutes, the reaction time is 30 minutes, and the rotation speed is 1000 r / min under the condition of nitrogen protection, and the polyimide prepolymer is obtained by cooling to room temperature and standing for 3 hours. The structure of the polyimide prepolymer was characterized according to relevant standards. Mix polyimide prepolymer with polyethylene wax, polypropylene wax and erucamide in N,N-dimethylacetamide and add methanesulfonic acid, hea...

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Abstract

The invention discloses a method for preparing synthetic wax. The composite wax is prepared by adding polyimide and various wax sources, and the product prepared by the method has the characteristicssuch as high hardness, high melting point and high wear resistance, and has broad application prospects in the fields of coatings and printing and dyeing.

Description

technical field [0001] The invention relates to a method for preparing synthetic wax, which belongs to the technical field of polymer synthetic wax preparation. Background technique [0002] Polymer wax is a kind of chemical material formed by polymer processing agent. Its color is white small microbeads / flakes. It has the characteristics of high melting point, high hardness, high gloss and snow white color. The most common synthetic wax is polyethylene wax. Polyethylene wax has good compatibility with polyethylene, polypropylene, polyvinyl wax acid, ethylene propylene rubber, and butyl rubber, and can improve the fluidity and polyethylene wax of polyethylene, polypropylene, and ABS. Mold release properties of methyl methacrylate, polycarbonate. Polyethylene wax is widely used in low-molecular-weight polyethylene homopolymers or copolymers of coatings. As an additive, it can be directly added to polyolefin processing to increase the gloss and processing performance of produ...

Claims

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Application Information

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IPC IPC(8): C08L79/08C08L23/06C08L23/12C08K5/20C08G73/10C09D7/63C09D7/65
CPCC08G73/1007C08G73/1035C08L23/06C08L23/12C08L79/08C08L2205/03C09D7/63C09D7/65C08K5/20
Inventor 曹春华
Owner 江苏金橡塑新材料有限公司
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