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Functional polyolefin solid degradation agent

A functional polyolefin and degrading agent technology, applied in the field of degrading agents, can solve the problems of unstable melt index, poor uniformity, high risk, etc., and achieve the effects of excellent antioxidant performance, uniform degradation process and narrow molecular weight distribution.

Active Publication Date: 2018-12-21
DALIAN XINGHUI CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the dispersion is uneven, it may cause the melt index of the product to be unstable and poor in uniformity, which will affect the stability of continuous production and product quality. The local excessive degradation caused by uneven dispersion will cause the product to produce odor. Its high chemical activity makes it highly dangerous during transportation, storage and use, and it is extremely flammable or even explosive

Method used

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Examples

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Embodiment 1

[0037] A preparation method of a functional polyolefin solid degradation agent, the preparation method is: by weight, 70 parts of polypropylene, 10 parts of peroxide, 20 parts of antioxidant, 5 parts of slippery agent / antistatic agent and 5 parts of acid scavenger are extruded and granulated in an extruder to obtain cylindrical functional polyolefin solid degradation agent particles, the diameter of the bottom surface of the cylinder is 2-4mm, and the height of the cylinder is 2-4mm.

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Abstract

The invention relates to a functional polyolefin solid degradation agent and belongs to the technical field of degradation agents. The functional polyolefin solid degradation agent is prepared from the following components in parts by weight: 30 to 70 parts of polypropylene, 5 to 20 parts of peroxide, 10 to 30 parts of an antioxidant, 5 to 15 parts of a smoothening agent / antistatic agent and 5 to15 parts of an acid cleaning agent, wherein peroxide is at least one of di-tert-pentyl peroxide, 2,5-dimethyl-2,5bis(tert-butylperoxyl)hexane and dicumyl peroxide. A high-melting-index polypropylene product produced by the functional polyolefin solid degradation agent has narrow molecular weight distribution and also has excellent anti-oxidization performance; the oxidative induction time of a product is greater than 8min when the temperature is 200 DEG C.

Description

technical field [0001] The invention relates to a functional polyolefin solid degradation agent, which belongs to the technical field of degradation agents. Background technique [0002] High-quality polypropylene fibers require polypropylene products to have a high melt index and a narrow molecular weight distribution. Usually, the production of polypropylene products that meet this requirement requires a degradation method, that is, the production of polypropylene products with a narrow molecular weight distribution and a high melt index by adding a degradation agent during the extrusion and granulation of polypropylene products with a wide molecular weight and low melt index . [0003] In the high melting point polypropylene process produced by the degradation method, liquid organic peroxides are commonly used as degradation agents. Due to the high concentration and small amount of liquid peroxide added, it is difficult to disperse the degradation agent uniformly in the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L53/00C08K5/00C08K5/14C08K5/3492C08K5/13C08K5/526C08K5/20C08K5/098C08J3/22
CPCC08J3/226C08J2323/12C08J2353/00C08J2423/12C08K5/00C08K5/098C08K5/13C08K5/14C08K5/20C08K5/34924C08K5/526C08K2201/017
Inventor 赵立阳任国辉姜晋良吴宪
Owner DALIAN XINGHUI CHEM
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