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Polypropylene resin special for manufacturing of medical ampoule bottles

A technology of polypropylene resin and polypropylene, which is applied in the field of polypropylene resin and can solve problems affecting the mechanical properties of ampoules

Inactive Publication Date: 2016-05-18
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, during the entire manufacturing process of medical ampoules, polypropylene resin, the raw material for bottle making, needs to be heated and melted in an aerobic environment, and polymer macromolecules will be degraded as a result, which will affect the mechanical properties of ampoules

Method used

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  • Polypropylene resin special for manufacturing of medical ampoule bottles
  • Polypropylene resin special for manufacturing of medical ampoule bottles

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The preparation of embodiment 1 propylene-ethylene random copolymerization polypropylene

[0018] Polymerization-grade propylene, ethylene, and hydrogen are used as raw materials and put into the loop reactor, and catalyst DQ-Ⅲ, cocatalyst triethylaluminum (TEAL), electron donor DONOR and antistatic agent Atmer163 are added and stirred evenly. Among them: Catalyst DQ-III is added according to the output of 40kg / ton, TEAL / propylene=0.21; TEAL / DONOR=3, antistatic agent Atmer163 is 2~3kg / h. The reaction temperature in the loop reactor is controlled at 65-72° C., the reaction pressure is 3.3-4.0 MPa, and the hydrogen concentration is 200-500 ppm, so as to obtain the random copolymerization polypropylene resin of propylene and ethylene. Its performance is shown in Table 2.

[0019] Table 2 Polypropylene Resin Physical Properties

[0020] project

standard test

Test Results

Melt flow rate, g / 10min

GB / T 3682

1.7±0.3

Isotactic index, %...

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PUM

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Abstract

The invention belongs to the technical field of polymer processing and specifically relates to polypropylene resin special for manufacturing of medical ampoule bottles. The polypropylene resin is a composition. A polypropylene random copolymer with propylene and ethylene, an antioxidant and a deacid agent are mixed according to the mass ratio of 100: (0.05-1):(0.01-2) at normal temperature and normal pressure for 2-5 min, and then the mixture undergoes extrusion pelletization to obtain the product. Content of ethylene in the polypropylene random copolymer with propylene and ethylene is 0.5-4.5 wt%; melt flow rate under conditions of 230 DEG C and 2.16 kg / 10 min is 1.0-3.0 g / 10 min; isotactic index is 95-99%; number-average molecular weight is 70-100 thousands; and molecular weight distribution index is 4-6. Within the processing temperature range of 170-240 DEG C, the resin of the invention can be used to stably manufacture a medical ampoule bottle. In addition, the manufactured medical ampoule bottle can be tolerant to steam sterilization at 121 DEG C for 30 min and will not deform.

Description

technical field [0001] The present invention relates to a polypropylene resin, in particular to a polypropylene resin specially used in the manufacture of medical ampoules Background technique [0002] Ampoule bottle is a sealed vial used to store injections, vaccines, serum, etc. It is widely used in infusion systems, with a capacity of 1-25ml, and can also be used for storage of oral liquids. The earliest glass ampoule bottle appeared, but when it was opened, a large amount of glass particles would be produced, which would enter the human body along with the injection, causing harm to human health, and its production, disinfection, and transportation were inconvenient. During the process, the sharp glass is easy to hurt the medical staff. Plastic is gradually becoming an alternative to glass ampoules due to its own advantages. Plastic ampoules are easy to form, easy to sterilize and fill, and easy to automate production. Plastic ampoules are less prone to debris and par...

Claims

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Application Information

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IPC IPC(8): C08L23/16C08F210/16
Inventor 黄惟毅曲云春周浩王荣和
Owner CHINA PETROLEUM & CHEM CORP