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Method for preparing homo-polypropylene resin with relatively wide molecular weight distribution

A technology of wide molecular weight distribution and homopolymerization polypropylene, which is applied in the field of preparing homopolymer polypropylene resin with wide molecular weight distribution, and achieves the effects of high modulus, excellent physical properties and processing properties, and controllable polymer performance indicators.

Active Publication Date: 2014-02-19
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This patent mainly introduces the preparation of the catalyst and its application in the experimental device in the laboratory, and does not involve the specific application in the large-scale industrialized Spheripol process single-loop polypropylene device, and related polypropylene resin products

Method used

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  • Method for preparing homo-polypropylene resin with relatively wide molecular weight distribution

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Experimental program
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Effect test

Embodiment 1

[0018] In the single-loop polypropylene unit of LBI’s Spheripol process, a new type of wide molecular weight distribution catalyst NDQ (NDQ catalyst is provided by Sinopec Catalyst Beijing Aoda Branch) is used to produce average molecular weight distribution (Mw / Mn=4.0~5.5). The polypropylene base resin has a melt index of 10-15g / 10min, and a homopolypropylene resin is produced by adding a high-efficiency additive system. The high-efficiency additive system is expressed in parts by weight. The wide molecular weight distribution homopolypropylene resin raw material is 100 parts, the auxiliary additive antioxidant 1010 0.06 part, the auxiliary additive antioxidant 168 0.03 part, the auxiliary additive calcium stearate 0.03 part, the auxiliary additive The additive GMS (glyceryl monostearate) 0.09 parts, 0.21 parts in total, was added to a high-speed mixer and mixed thoroughly, first mixed at a speed of 750r / min for 1 minute, then mixed at a speed of 1500r / min for 30 seconds, and ...

Embodiment 2

[0020] In the single-loop polypropylene unit of LBI company Spheripol process, wide molecular weight distribution catalyst NDQ is used to produce homopolymer polypropylene resin with wide molecular weight distribution (Mw / Mn=4.0-5.5), and the melt index is 11-12g / 10min , and then a homopolymerized polypropylene resin is produced by adding a high-efficiency additive system. The high-efficiency additive system is expressed in parts by weight. The wide molecular weight distribution homopolypropylene resin raw material is 100 parts, the auxiliary additive antioxidant 1010 0.06 part, the auxiliary additive antioxidant 168 0.03 part, the auxiliary additive calcium stearate 0.06 part, the auxiliary additive The additive GMS (glyceryl monostearate) 0.11 parts, 0.26 parts in total, was added to a high-speed mixer and mixed thoroughly, first mixed at a speed of 450r / min for 1 minute, then mixed at a speed of 1200r / min for 30 seconds, and then added to the twin-screw The granulation is c...

Embodiment 3

[0022] In the single-loop polypropylene unit of LBI company Spheripol process, wide molecular weight distribution catalyst NDQ is used to produce homopolymer polypropylene resin with wide molecular weight distribution (Mw / Mn=4.0-5.5), and the melt index is 12-13g / 10min , and then a homopolymerized polypropylene resin is produced by adding a high-efficiency additive system. The high-efficiency additive system is expressed in parts by weight. The wide molecular weight distribution homopolypropylene resin raw material is 100 parts, the auxiliary additive antioxidant 1010 0.06 part, the auxiliary additive antioxidant 168 0.03 part, the auxiliary additive calcium stearate 0.06 part, the auxiliary additive The additive GMS (glyceryl monostearate) 0.09 parts, 0.24 parts in total, was added to a high-speed mixer and mixed thoroughly, first mixed at a speed of 550r / min for 1 minute, then mixed at a speed of 1300r / min for 30 seconds, and then added to the twin-screw Granulation is carri...

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Abstract

The invention discloses a method for preparing a homo-polypropylene resin with relatively wide molecular weight distribution. A novel wide molecular weight distribution catalyst is used on a Spheripol process single-loop polypropylene device to produce a basic resin with relatively wide molecular weight distribution (Mw / Mn=4.0-5.5), and then an efficient assistant system is added to produce the homo-polypropylene resin. The efficient assistant system is shown according to parts by weight, the homo-polypropylene resin with wide molecular weight distribution is 100 parts, the other assistant additives are 0.21-0.26 part, and the homo-polypropylene resin with relatively wide molecular weight distribution, which is the product of the invention, is obtained through the operations of high-speed sufficient blending, extruding by a double-screw extruder, cooling, grain-sized dicing and drying granules. The homo-polypropylene resin with relatively wide molecular weight distribution is easy to process, the product is non-toxic and harmless, meets the environmental protection requirement, is excellent in mechanical property, and is safe and sanitary.

Description

technical field [0001] The present invention designs a method for preparing homopolypropylene resin with a wider molecular weight distribution, especially adopts a new type of wide molecular weight distribution catalyst on a single-loop polypropylene device in the Spheripol process to produce a wider molecular weight distribution (Mw / Mn=4.0-5.5) The preparation method of polypropylene resin. Background technique [0002] Polypropylene is one of the five general-purpose plastics, mainly used in wire drawing, injection molding, pipes, films and other fields. Among them, polypropylene injection molding products have been widely used in packaging, transportation, home appliances, automobiles, offices, daily consumer goods, medical products and other fields. [0003] In recent years, with the continuous development of polypropylene (PP) catalysts and production processes and the continuous development of application fields, the market share of polypropylene injection molding spe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08F110/06C08F2/01C08F4/00B29B9/06B29C47/92B29C45/78B29C48/92
CPCB29B9/06B29C45/78B29C48/92B29C2945/76531B29C2948/9258B29C2948/92704C08F110/06C08K5/098C08K5/103C08K5/1345C08K5/526C08F2500/04C08F2500/15C08F2/01C08F4/00C08L23/12B29C48/04B29C48/40B29C48/911
Inventor 马国玉肖春青李玉松王辉曹欢
Owner CHINA PETROLEUM & CHEM CORP
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