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Polypropylene resin for manufacturing medical transfusion container

A technology of polypropylene resin and infusion container, which is applied in the field of polypropylene resin and can solve problems such as poor transparency

Inactive Publication Date: 2005-10-05
SINOPEC SHANGHAI PETROCHEMICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this single resin material has reached a good level of heat resistance, strength and toughness, its transparency is poor, so a copolymer of propylene and 3-methylbutene-1 must be added as a polypropylene nucleation The turbidity of the bottle with a thickness of 9mm made by the injection stretch blowing process reached 9%.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Polypropylene resin is a random copolymer of propylene and ethylene:

[0015] The ethylene content is 0.2wt%, the melting temperature is 140-165°C, and the melt flow rate is 1.5g / 10min;

[0016] Acid neutralizer:

[0017] Calcium stearate, propylene and ethylene random copolymer / calcium stearate=100 / 0.05 (weight ratio);

[0018] Antioxidant:

[0019] 1,3,5-trimethyl-2,4,6-tris(3,5-di-tert-butyl-4-hydroxybenzyl)benzene,

[0020] Random copolymer of propylene and ethylene / 1,3,5-trimethyl-2,4,6-tris(3,5-di-tert-butyl-4-hydroxybenzyl)benzene=100 / 0.1 (weight ratio).

Embodiment 2

[0022] Polypropylene resin is a random copolymer of propylene and ethylene:

[0023] The ethylene content is 0.5wt%, the melting temperature is 140-165°C, and the melt flow rate is 1.2g / 10min;

[0024] Acid neutralizer:

[0025] Hydrogenated talcum powder, propylene and ethylene random copolymer / hydrogenated talcum powder=100 / 0.08 (weight ratio);

[0026] Antioxidant:

[0027] Tris(2,4-di-tert-butylphenyl)phosphite,

[0028] Random copolymer of propylene and ethylene / tris(2,4-di-tert-butylphenyl)phosphite=100 / 0.1 (weight ratio).

Embodiment 3

[0030] Polypropylene resin is a random copolymer of propylene and ethylene:

[0031] The ethylene content is 2.9wt%, the melting temperature is 140-165°C, and the melt flow rate is 2.0g / 10min;

[0032] Acid neutralizer:

[0033] Hydrogenated talcum powder, propylene and ethylene random copolymer / hydrogenated talcum powder=100 / 0.10 (weight ratio);

[0034] Antioxidant:

[0035] Di-[3,3-di-(3-tert-butyl-4-hydroxyphenyl)-butyric acid]ethylene glycol ester,

[0036] Random copolymer of propylene and ethylene / di-[3,3-di-(3-tert-butyl-4-hydroxyphenyl)-butyric acid]ethylene glycol ester=100 / 0.3 (weight ratio).

[0037] The physical index of above-mentioned each embodiment polypropylene resin is listed in Table 1.

[0038] Tensile Strength

[0039] Take the polypropylene resin of the above-mentioned Example 3, and use the injection stretch-blowing process to manufacture a medical infusion container. The wall thickness of the container is 0.9mm, and the measured turbid...

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Abstract

This invention is polypropylene resin used for making medical transfusion container. The resin is propene and ethane atactic multipolymer, the ethane content is 0.5-4wt%, the melting temperature is 140-165deg.C, the flowing speed is 1.0-4.1g / 10min. the resin contains acid neutralizer and antioxidant, propene ethane atactic multipolymer / acid neutralizer=100 / (0.01-0.10)(weight ratio); propene ethane atactic multipolymer / antioxidant=100 / (0.02-0.30)(weight ratio). The acid neutralizer is one of calcium stearate or hydro-saponite or the mixture of the two, the antioxidant is one of or mixture of hindered phenol and phosphate ester. The polypropylene resin provided by this invention not only has good heat endurance, intension and tenacity, but also has better transparency.

Description

technical field [0001] The invention relates to a polypropylene resin, in particular to a polypropylene resin specially used for manufacturing medical transfusion containers. Background technique [0002] Early plastic medical infusion containers were made of vinyl chloride, but due to the easy precipitation of polyvinyl chloride plasticizers and vinyl chloride monomers, they have been basically replaced by polypropylene, polyethylene and other materials in recent years, such as Chinese patents 99814444, 98807300 , 01813402, 01111112, etc., in order to improve the heat resistance, strength, toughness and transparency of the material, these medical infusion containers are usually made of composite materials with 3 to 7 layers of different resins, so the manufacturing process is very complicated and the production cost very high. It is obviously much simpler to manufacture medical infusion containers with a single resin material. For example, U.S. Patent No. 5,286,540 introdu...

Claims

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Application Information

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IPC IPC(8): A61M1/00C08K5/521C08L23/14
Inventor 陶红陈海林刘勇董超陆国华将忠辉牟丹杨惠华高国强
Owner SINOPEC SHANGHAI PETROCHEMICAL CO LTD
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