Industrial production method of high-melt-strength polypropylene resin

A technology of high melt strength, polypropylene resin, applied in the field of expanded polypropylene material

Active Publication Date: 2020-07-07
SHAANXI YANCHANG CHINACOAL YULIN ENERGY CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, it has not been seen that on the INEOS Innovene gas-phase fluidized bed process equipment, the development and production of high melt strength polymers with wide molecular weight distribution, branched chain structure, high melt strength, and significant tensile strain hardening characteristics Acrylic Reports

Method used

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  • Industrial production method of high-melt-strength polypropylene resin
  • Industrial production method of high-melt-strength polypropylene resin
  • Industrial production method of high-melt-strength polypropylene resin

Examples

Experimental program
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Effect test

example 1

[0054] The polymerization reaction is carried out on the INEOS Innovene gas phase fluidized bed process unit. It mainly includes raw material refining unit, catalyst feeding unit, polymerization reaction unit and so on. The steps of the preparation method are as follows, see image 3 :

[0055] 1.1 Raw material refining:

[0056] The raw material propylene passes through the raw material refining system to remove water, COS and other reactive impurities.

[0057] 1.2 Feed of main catalyst, co-catalyst and functional additives:

[0058] The main catalyst, co-catalyst and functional auxiliary are all fed through the catalyst feeding unit.

[0059] The purchased commercial catalyst (Ziegler-Natta titanium series catalyst) was sprayed and injected into the reactor in the form of propylene entrainment through the feed pump.

[0060] Cocatalyst triethylaluminum, silane (specifically using DIBDMS), and functional additive (specifically using 7-octenyltrichlorosilane) are sprayed...

example 2

[0073] see Figure 4 , In this example, the production of high melt strength random copolymerized polypropylene resin is achieved by adding ethylene into two reactors. Since the addition of ethylene reduces the regularity of polypropylene molecular chains, it can adapt to downstream processing requirements. When producing high melt strength random copolymerized polypropylene resin, the specific production process control parameters of the two reactors are shown in Table 3.

[0074] Table 3. Process Control Parameters of High Melt Strength Random Copolymerized Polypropylene Resin

[0075]

[0076] Note: In the first reactor and the second reactor, the melt index (2.16Kg / 230°C) of the polymer is 1g / 10min and 2g / 10min respectively

[0077] Compared with example 1, the high melt strength random copolymerization polypropylene resin obtained by this example, because add ethylene as comonomer in two reactors, its physical property parameter and high melt strength homopolypropyle...

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Abstract

The invention discloses an industrial production method of high-melt-strength polypropylene resin. In a gas-phase fluidized bed reactor, a Ziegler-Natta titanium catalyst is used for producing polypropylene, the polypropylene and an additive are subjected to melt extrusion granulation, and the obtained polypropylene resin product has high melt strength and good impact strength, tensile strain hardening characteristics and processability. The product is mainly used as a foamed polypropylene raw material, is applied to the industries of packaging, automobile parts, buildings, sports goods and the like, and can be used for manufacturing packaging cushions, automobile headrests, cushions, life jackets, surfboards, sound insulation materials and the like.

Description

technical field [0001] The invention relates to expanded polypropylene (EPP) materials, in particular to an industrialized production method of high melt strength polypropylene resin. Background technique [0002] For high melt strength polypropylene, the melt index and melt strength of the product are important physical property indicators, which determine the processing performance and application field of the product. High melt strength polypropylene resin is a recyclable and environmentally friendly material. The foamed products processed by it have the characteristics of light weight, high strength, excellent impact resistance, and good heat resistance. The density is higher than that of polyethylene and polypropylene. Styrene foam is low, but has higher strength and heat resistance. It can be widely used in packaging, automobiles, construction, sporting goods, as well as heat insulation and sound insulation materials and replace traditional foam materials such as polys...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F210/06C08F210/16C08F2/38C08F2/01C08F4/646
CPCC08F210/06C08F210/16C08F2/38C08F2/01C08F4/6465Y02P20/52
Inventor 杜杰刘升李国军孙晓伟蔡立恒刘浪霍金兰高芙蓉
Owner SHAANXI YANCHANG CHINACOAL YULIN ENERGY CHEM
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