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Preparation method of low-VOC polypropylene resin and polypropylene resin prepared by method

A technology of polypropylene resin and polypropylene, which is applied in the field of polypropylene resin, can solve problems such as compatibility and durability, and achieve the effects of good thermal stability, delayed release, and suppression of VOC production

Inactive Publication Date: 2018-02-02
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent (CN101255252A) reduces the VOC of the material by adding an organic repellant such as isopropanol / water, but this method has compatibility and persistence problems
Although the above-mentioned method of using adsorbent can play a certain role in reducing the VOC of polypropylene, there is still a problem of adsorption balance. At higher temperatures, the balance moves to the direction of desorption, and there is a hidden danger of later release of VOC in polypropylene materials.

Method used

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  • Preparation method of low-VOC polypropylene resin and polypropylene resin prepared by method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～3

[0033] Soak polypropylene powder (092B, Beijing Research Institute of Chemical Industry) in n-hexane solvent at 30-60°C for 8-72 hours, filter the solution, then dry the polypropylene powder and a small amount of solvent in a vacuum oven at 80°C Obtain dry polypropylene powder in 4 hours (the processing conditions of polypropylene powder are 50°C and 36h, which are recorded as PP-1; 30°C and 72h are recorded as PP-2; 60°C and 8h are recorded as PP-3;); Afterwards, the treated polypropylene powder, fully vulcanized powder silicone rubber (VP-602, particle size 0.1 μm, gel content 90%, Beijing Research Institute of Chemical Industry), antioxidant (antioxidant 1010 and antioxidant 168 It is obtained by compounding at a weight ratio of 1: (1 to 4), BASF in Germany), light stabilizer (BASF in Germany or Cytec in the United States) into a high-speed mixer, and stirred at a speed of 300 rpm for 3 Minutes to fully mix the components uniformly; then pass the above-mentioned mixed mater...

Embodiment 4

[0036] Soak polypropylene powder (092B, Beijing Research Institute of Chemical Industry) in n-hexane solvent at 30-60°C for 8-72 hours, filter the solution, then dry the polypropylene powder and a small amount of solvent in a vacuum oven at 80°C Obtain dry polypropylene powder in 4 hours (the processing conditions of polypropylene powder are 50°C and 36h, which are recorded as PP-1; 30°C and 72h are recorded as PP-2; 60°C and 8h are recorded as PP-3;); Afterwards, the treated polypropylene powder, fully vulcanized powder silicone rubber (VP-602, particle size 0.05 μm, gel content 75%, Beijing Research Institute of Chemical Industry), antioxidant (antioxidant 1010 and antioxidant 168 It is obtained by compounding at a weight ratio of 1: (1 to 4), BASF in Germany), light stabilizer (BASF in Germany or Cytec in the United States) into a high-speed mixer, and stirred at a speed of 300 rpm for 3 Minutes to fully mix the components uniformly; then pass the above-mentioned mixed mate...

Embodiment 5

[0039] Soak polypropylene powder (092B, Beijing Research Institute of Chemical Industry) in n-heptane solvent at 30-60°C for 8-72 hours, filter the solution, then put polypropylene powder and a small amount of residual solvent in a vacuum oven at 80°C Dried for 4 hours to obtain dry polypropylene powder (the processing conditions of polypropylene powder are 50°C and 36h, which is marked as PP-1; 30°C and 72h, marked as PP-2; 60°C and 8h, marked as PP-3;) ; Afterwards, the processed polypropylene powder, fully vulcanized powder silicone rubber (VP-602, particle diameter 0.2 μm, gel content 80%, Beijing Research Institute of Chemical Industry), antioxidant (antioxidant 1010 and antioxidant 168 is compounded at a weight ratio of 1: (1 to 4), BASF, Germany), and light stabilizer (BASF, Germany or Cytec, USA) are put into a high-speed mixer and stirred at a speed of 300 rpm For 3 minutes, the components were fully mixed and uniform; then the above-mentioned mixed material was passe...

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Abstract

The invention discloses a preparation method of low-VOC polypropylene resin and the polypropylene resin prepared by the method. The method comprises the following steps: before mixing and granulatingpolypropylene powder and a processing aid, soaking and extracting the polypropylene powder by a solvent, and then performing drying until the powder is free of weight loss, wherein the solvent is an alkane of C6-C8, the soaking and extracting temperature is in a range of 30-60 DEG C, the processing time is 8-72 hours, the drying temperature is 70-80 DEG C, and the drying time is 4-6 hours. The content of total volatile organic compounds (TVOC) of the polypropylene resin disclosed by the invention is lower than 40 [mu]g*C / g and the polypropylene resin can be widely applied to the fields with relatively high environmental protection requirements, such as high-grade automobile interior ornaments, medical use, food packaging materials and the like. In the preparation process, the operation process is simple and reliable, the investment cost is low, and the defects in the prior art are well solved.

Description

technical field [0001] The invention relates to the field of polypropylene, in particular to a method for preparing a low-VOC polypropylene resin and the prepared polypropylene resin. Background technique [0002] Polypropylene (PP) has been widely used in various fields of people's life because of its excellent comprehensive properties, wide range of sources, high quality and low price. However, the existing polypropylene materials and products all have the problems of releasing volatile organic compounds (VOC) to pollute the environment and endanger people's health in varying degrees, which largely limits the use of polypropylene materials in high-end automobiles with high environmental protection requirements. Applications in fields such as decorative parts, medical and food packaging materials. Therefore, the research and development of environmentally friendly low-VOC polypropylene resin and materials can expand the application field of PP and meet the requirements of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/10C08L83/04C08K5/134C08K5/526C08K5/3492C08K5/3435
CPCC08L23/10C08L2201/08C08L2203/02C08L83/04C08K5/1345C08K5/526C08K5/3492C08K5/3435
Inventor 康鹏金滟蔡涛丁树岩潘瑞琦石胜鹏李力庆刘善元
Owner CHINA PETROLEUM & CHEM CORP
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