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Random copolymerization polypropylene thermal forming special-use resin with wide molecular weight distribution and preparation method

A technology of wide molecular weight distribution and molecular weight distribution is applied in the field of producing random copolymer polypropylene resin with wide molecular weight distribution. control effect

Inactive Publication Date: 2014-11-26
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] At present, there are few patents and documents for the development and application of wide molecular weight distribution random copolymer polypropylene thermoforming materials

Method used

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  • Random copolymerization polypropylene thermal forming special-use resin with wide molecular weight distribution and preparation method
  • Random copolymerization polypropylene thermal forming special-use resin with wide molecular weight distribution and preparation method
  • Random copolymerization polypropylene thermal forming special-use resin with wide molecular weight distribution and preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] In the single-loop polypropylene unit of the Spheripol process of LBI Company, a new type of wide molecular weight distribution catalyst NDQ (activity of 21000g polypropylene / g catalyst) is used. The NDQ catalyst is provided by the Beijing Research Institute of Chemical Industry (the same below); the addition of liquid with a purity of 99.7% Propylene and ethylene with a purity of 99.9%, the addition of ethylene is 1.2%wt, to produce a random copolymerized polypropylene base resin with a wide molecular weight distribution (Mw / Mn=5.0-6.0), the melt index is 3-4g / 10min, and then passed A high-efficiency additive system is added to produce a special resin for random copolymerization polypropylene thermoforming. The high-efficiency additive system is expressed in parts by weight. The wide molecular weight distribution random copolymerized polypropylene resin raw material is 100 parts, and the auxiliary additives are 0.0244 parts of antioxidant 1010, 0.0489 parts of antioxida...

Embodiment 2

[0022]In the single-loop polypropylene device of LBI company Spheripol process, a wide molecular weight distribution catalyst NDQ is used, (the activity is 25000g polypropylene / g catalyst,) adding liquid propylene with a purity of 99.7% and ethylene with a purity of 99.9%, and the amount of ethylene added is 1.5 %wt, to produce random copolymer polypropylene resin with wide molecular weight distribution (Mw / Mn=5.0~6.0), the melt index is 3~4g / 10min, the high-efficiency additive system is expressed in parts by weight, and the wide molecular weight distribution is random The raw material of copolymerized polypropylene resin is 100 parts, and the auxiliary additives are 0.0269 parts of antioxidant 1010, 0.0538 parts of antioxidant 168, 0.0269 parts of calcium stearate, 0.1344 parts of GMS, and 0.0538 parts of organic carboxylate nucleating agent , added to a high-speed mixer and fully mixed, mixed at a low speed of 300r / min for 1.5 minutes and then mixed at a high speed of 1500r / m...

Embodiment 3

[0024] In the single-loop polypropylene unit of LBI company Spheripol process, a wide molecular weight distribution catalyst NDQ is used, (the activity is 28000g polypropylene / g catalyst,) adding liquid propylene with a purity of 99.7% and ethylene with a purity of 99.9%, and the amount of ethylene added is 1.8 %wt, to produce random copolymer polypropylene resin with wide molecular weight distribution (Mw / Mn=5.0~6.0), the melt index is 3~4g / 10min, the high-efficiency additive system is expressed in parts by weight, and the wide molecular weight distribution is random The raw material of copolymerized polypropylene resin is 100 parts, and the auxiliary additives are 0.0293 parts of antioxidant 1010, 0.0587 parts of antioxidant 168, 0.0293 parts of calcium stearate, 0.1467 parts of GMS, and 0.0293 parts of organic carboxylate nucleating agent , added to a high-speed mixer and fully mixed, mixed at a low speed of 300r / min for 1.5 minutes and then mixed at a high speed of 1000r / mi...

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Abstract

The invention designs random copolymerization polypropylene thermal forming special-use resin with wide molecular weight distribution and a preparation method, the molecular weight distribution Mw / Mn of the random copolymerization polypropylene thermal forming special-use resin is 5-7; and the melt index is 3-7g / 10min. Ziegler Natta NDQ catalyst is used, ethylene is added into Spheripol process single loop tube polypropylene plant, the NDQ activity is 21000-39000g polypropylene / g catalyst, the ethylene addition amount is 1.2-2.2%wt, and by an auxiliary agent addition system, the random copolymerization polypropylene thermal forming special-use resin is produced. The synthetic method of the random copolymerization polypropylene thermal forming special-use resin with the wide molecular weight distribution can be used in industrial production using the Spheripol process single loop tube polypropylene plant of LBI company, and has the characteristics of simple technological operation and controllable polymer performance index.

Description

technical field [0001] The present invention designs a special resin for thermoforming of random copolymerized polypropylene with wide molecular weight distribution and its preparation method, especially adopts novel wide molecular weight distribution catalyst on the single-loop polypropylene device of Spheripol process to produce wide molecular weight distribution (Mw / Mn =5.0~7.0) random copolymerization polypropylene resin preparation method. Background technique [0002] Polypropylene is one of the five general-purpose plastics, mainly used in wire drawing, injection molding, pipes, films and other fields. With the advancement of polypropylene production technology, especially the use of new high-efficiency catalysts, great progress has been made in the development and application of thermoformed polypropylene. The domestic consumption of transparent thermoformed water cups, food trays, and electronic and electrical packaging is increasing year by year, and the annual de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F210/06C08F210/02C08F2/01B29C47/92C08L23/16C08K5/098B29C48/92
Inventor 曹建秋马国玉李玉松王辉曹欢张威曾新叶松
Owner CHINA PETROLEUM & CHEM CORP
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