A kind of composite polyethylene wax for plastics and preparation method thereof

Abstract

The invention relates to a production method for composite polypropylene wax used for plastic. The composite polypropylene wax comprises polypropylene low polymers, Fischer-tropsch wax or microcrystalline wax and industrial hydrogenated oil, and has the properties that the softening point is 100 DEG C or above, and the average molecular weight ranges from 1500 to 3000. As an excellent dispersing agent, on the aspects of color master production and pigment dispersion, the composite polypropylene wax produced through the method has the advantages that effective molecular weights are concentrated, wherein the molecular weights are narrowly distributed and concentrated, and therefore the dispersion effect and the coloring force are easily improved, and relatively speaking, the addition amount can be decreased under the certain dispersion requirement; the excellent heat resistance and the excellent thermal stability are achieved; the melting point and the viscosity matching are moderate, and the shearing force is facilitated, wherein the softening point is 110 DEG C, the high viscosity is 150 CP / 140 DEG C, produced color master particles have high intermiscibility and mobility and moderate in viscosity, the shearing force is increased, and dispersity is improved.

Description

technical field

[0001] The invention relates to a production method of composite polyethylene wax for plastics, belonging to the technical field of chemical industry. Background technique

[0002] The existing polyethylene wax preparation method is generally made of high molecular weight polyethylene through a series of process steps, which has high manufacturing cost, and the produced molecular weight distribution is wide, resulting in the reduction of dispersion effect and coloring performance; and its softening Points, hardness and other data can not be effectively guaranteed, and thus need to be improved. Contents of the invention

[0003] The present invention aims at the above-mentioned defects, and aims to provide a product with better electrical properties, higher softening point, low volatility at high temperature, excellent external lubrication and strong internal lubrication, which can improve the production efficiency of plastic products. A composite polyethyl...

Examples

Embodiment Construction

[0007] The invention includes polyethylene oligomer, Fischer-Tropsch wax or microcrystalline wax, and industrial hydrogenated oil; the polyethylene oligomer has the following properties: the softening point is above 100° C., and the average molecular weight is 1500-3000.

[0008] The weight ratio of each material is: polyethylene oligomer 50%, Fischer-Tropsch wax or microcrystalline wax 15-35%, industrial hydrogenated oil 35-15%.

[0009] A kind of preparation method of composite polyethylene wax for plastics is carried out according to the following steps:

[0010] 1) Break the polyethylene oligomer first, and then put the broken material into the reactor;

[0011] 2) Heat the polyethylene oligomer until the material is completely melted into a liquid state. The heating temperature is set at 180-200°C. During the heating reaction, use a vacuum pump to negatively pressure the reactor to obtain long-chain aliphatic with shorter side chains. Hydrocarbon polyethylene wax;

[00...

technical field

[0001] The invention relates to a production method of composite polyethylene wax for plastics, belonging to the technical field of chemical industry. Background technique

[0002] The existing polyethylene wax preparation method is generally made of high molecular weight polyethylene through a series of process steps, which has high manufacturing cost, and the produced molecular weight distribution is wide, resulting in the reduction of dispersion effect and coloring performance; and its softening Points, hardness and other data can not be effectively guaranteed, and thus need to be improved. Contents of the invention

[0003] The present invention aims at the above-mentioned defects, and aims to provide a product with better electrical properties, higher softening point, low volatility at high temperature, excellent external lubrication and strong internal lubrication, which can improve the production efficiency of plastic products. A composite polyethyl...

Examples

Embodiment Construction

[0007] The invention includes polyethylene oligomer, Fischer-Tropsch wax or microcrystalline wax, and industrial hydrogenated oil; the polyethylene oligomer has the following properties: the softening point is above 100° C., and the average molecular weight is 1500-3000.

[0008] The weight ratio of each material is: polyethylene oligomer 50%, Fischer-Tropsch wax or microcrystalline wax 15-35%, industrial hydrogenated oil 35-15%.

[0009] A kind of preparation method of composite polyethylene wax for plastics is carried out according to the following steps:

[0010] 1) Break the polyethylene oligomer first, and then put the broken material into the reactor;

[0011] 2) Heat the polyethylene oligomer until the material is completely melted into a liquid state. The heating temperature is set at 180-200°C. During the heating reaction, use a vacuum pump to negatively pressure the reactor to obtain long-chain aliphatic with shorter side chains. Hydrocarbon polyethylene wax;

[00...