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Resin special for plastic suction molding of transparent broad molecular weight-distributed random copolymer polypropylene and preparation method of resin

A technology of wide molecular weight distribution and random copolymerization, which is used in the field of special resin and preparation for transparent wide molecular weight distribution random copolymer polypropylene plastic molding, and achieves the effects of easy processing, good fluidity and improved transparency.

Inactive Publication Date: 2017-11-24
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In particular, the use of a new type of wide molecular weigh

Method used

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  • Resin special for plastic suction molding of transparent broad molecular weight-distributed random copolymer polypropylene and preparation method of resin
  • Resin special for plastic suction molding of transparent broad molecular weight-distributed random copolymer polypropylene and preparation method of resin
  • Resin special for plastic suction molding of transparent broad molecular weight-distributed random copolymer polypropylene and preparation method of resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] In the single-loop polypropylene unit of LBI company Spheripol process, a new type of wide molecular weight distribution catalyst NDQ (activity is 21000g polypropylene / g catalyst) is used first, and the NDQ catalyst is provided by Beijing Research Institute of Chemical Industry (the same below); Liquid propylene and ethylene with a purity of 99.9%, with ethylene addition of 0.2%wt, produce a random copolymer polypropylene base resin with a wide molecular weight distribution (Mw / Mn=4.0-7.0), and a melt index of 1.0-3.0g / 10min; Then, in the random copolymerized polypropylene base resin with a wide molecular weight distribution (Mw / Mn=4.0~7.0), by adding an auxiliary auxiliary system such as a transparent agent, the transparency and the low yellowness index are improved, and a low yellowness index is produced. Transparent wide molecular weight distribution random copolymer polypropylene thermoforming resin. The high-efficiency additive system is expressed in parts by weigh...

Embodiment 2

[0029] In LBI company Spheripol process single-loop polypropylene device, first adopt novel wide molecular weight distribution catalyst NDQ (activity is 22000g polypropylene / g catalyst); add the liquid propylene with purity of 99.7% and the ethylene of purity 99.9%, the addition amount of ethylene is 0.3%wt, produce random copolymerized polypropylene base resin with wide molecular weight distribution (Mw / Mn=4.0~7.0), melt index is 1.0~3.0g / 10min; then wide molecular weight distribution (Mw / Mn=4.0~ 7.0) to the base resin of random copolymerized polypropylene, by adding auxiliary additive systems such as clarifiers, the transparency is improved and the low yellowness index is reduced to produce a low yellowness index, high transparency, wide molecular weight distribution, random copolymerized polypropylene thermoforming special resin. The high-efficiency auxiliary system is expressed in parts by weight. The raw material of wide molecular weight distribution random copolymerized ...

Embodiment 3

[0031] In LBI company Spheripol process single-loop polypropylene unit, first adopt novel broad molecular weight distribution catalyst NDQ (activity is 23000g polypropylene / g catalyst); add the liquid propylene with purity of 99.7% and the ethylene of purity 99.9%, the addition amount of ethylene is 0.4%wt, to produce a random copolymerized polypropylene base resin with a wide molecular weight distribution (Mw / Mn=4.0~7.0), the melt index is 1.0~3.0g / 10min; 7.0) to the base resin of random copolymerized polypropylene, by adding auxiliary additive systems such as clarifiers, the transparency is improved and the low yellowness index is reduced to produce a low yellowness index, high transparency, wide molecular weight distribution, random copolymerized polypropylene thermoforming special resin. The high-efficiency auxiliary system is expressed in parts by weight. The raw material of wide molecular weight distribution random copolymerized polypropylene resin is 100 parts, and the ...

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Abstract

The invention relates to a preparation method of a resin special for plastic suction molding of transparent broad molecular weight-distributed random copolymer polypropylene. The preparation method comprises the following steps: adopting a broad molecular weight-distributed catalyst NDQ on a Spheripol process single-loop polypropylene device, and adding ethylene to produce a base resin of broad molecular weight-distributed random copolymer polypropylene; adding auxiliary additives into the base resin of broad molecular weight-distributed random copolymer polypropylene; placing in a high-speed mixer to be extruded by a twin-screw extruder; and producing the resin special for plastic suction molding of transparent broad molecular weight-distributed random copolymer polypropylene. The special resin has molecular weight distribution Mw/Mn of 4-7, a melt index of 1.0-3.0 g/10 min, a yellowness index being less than or equal to 4, and a haze being less than or equal to 10%. The preparation method provided by the invention realizes industrial production in the Spheripol process single-loop polypropylene device, has characteristics of controllable polymer molecular weight distribution, low yellowness index and excellent transparency, and is particularly suitable for application of plastic suction molding.

Description

technical field [0001] The present invention designs a transparent wide molecular weight distribution random copolymer polypropylene plastic-absorbing molding special resin and its preparation method, especially on the Spheripol process single-loop polypropylene device, using a new wide molecular weight distribution NDQ catalyst, adding ethylene, and then adding It is used to improve product transparency and reduce its yellowness index and other auxiliary additive systems, such as transparent agent, to produce a wide molecular weight distribution (Mw / Mn=4.0-7.0), a melt index of 1.0-3.0g / 10min, a yellowness index of ≤4; haze The preparation method of a transparent wide molecular weight distribution random copolymerized polypropylene plastic-absorbing molding special resin with ≤10% is disclosed. 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 adva...

Claims

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Application Information

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IPC IPC(8): C08F210/06C08F210/16C08F2/01C08L23/14C08K5/134C08K5/526C08K5/098C08K5/103B29C47/92B29C48/92
CPCC08F210/06B29C48/92B29C2948/92704C08K5/098C08K5/103C08K5/1345C08K5/526C08L2201/08C08L2201/10C08F210/16C08F2500/04C08F2/01C08L23/14
Inventor 王辉马国玉曹建秋张娜张威肖春青张国忠尹旭李恒赵长江梁秀文
Owner CHINA PETROLEUM & CHEM CORP
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