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Polypropylene composition for ampoule bottle
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A polypropylene composition and polypropylene technology, which are applied to special packaging items, packaging item types, medical containers, etc., can solve the problems such as the material properties and preparation methods of ampoules that are not mentioned.
Active Publication Date: 2015-04-29
CHINA PETROLEUM & CHEM CORP
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The patent does not mention the performance and preparation method of the ampoule bottle body material
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Embodiment 1
[0020] Random copolymerized polypropylene: 95 parts
[0021] It contains 3% ethylene by mass, and has a melt mass flow rate (MFR) of 2.5g / 10min at 230°C and 2.16kg.
[0022] SEBS: 5 servings
[0023] Containing 13% styrene by mass, the melt mass flow rate (MFR) is 3.0g / 10min under the conditions of 230°C and 2.16kg, G1645, KRATON Polymer Company of the United States.
[0025] Tris(2,4-di-tert-butyl)phenyl phosphite: 0.025 parts
[0026] Mix the random copolymerized polypropylene, elastomer SEBS, and antioxidant in a high-speed mixer in proportion to the above composition, then add them to a twin-screw extruder for melting and mixing, and extrude to granulate. Extrusion temperature: 180°C-230°C, screw speed: 200rpm.
Embodiment 2
[0028] Random copolymerized polypropylene: 85 parts
[0031] Bis(2,4-di-tert-butylphenyl)pentaerythritol diphosphite: 0.1 parts
[0032] Mix the random copolymerized polypropylene, elastomer SEBS, and antioxidant in a high-speed mixer in proportion to the above composition, then add them to a twin-screw extruder for melting and mixing, and extrude to granulate. Extrusion temperature: 180°C-230°C, screw speed: 150rpm.
Embodiment 3
[0034] Random copolymerized polypropylene: 80 parts
[0035] SEBS: 20 servings
[0036] n-octadecyl β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate: 0.05 parts
[0037] Tris(2,4-di-tert-butyl)phenyl phosphite: 0.1 parts
[0038] Mix the random copolymerized polypropylene, elastomer SEBS, and antioxidant in a high-speed mixer in proportion to the above composition, then add them to a twin-screw extruder for melting and mixing, and extrude to granulate. Extrusion temperature: 180°C-230°C, screw speed: 300rpm.
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Abstract
The invention provides a polypropylene composition for an ampoulebottle. According to the polypropylene composition, polypropylene is taken as a base material, a flexibilizer is an elastomer SEBS, and an antioxidantsystem consists of a hindered phenolantioxidant and a phosphite esterantioxidant. According to the polypropylene composition for the medical ampoulebottle provided by the invention, the density is 0.890-0.910g / cm<3>, the melt mass flow rate ranges from 0.5g / 10 minutes to 8.0g / 10 minutes, the tensile yield stress ranges from 10MPa to 20MPa, and the constant temperature impact strength is 30-90kJ / cm<2>. The composition has the characteristics of simple and stable preparation process, good processing performance and the like. The ampoulebottle prepared from the composition has the characteristics of low content of dissolved matters, good safety, easy openness, high transparency, good heat resistance and the like and is taken as a packaging container of a small-volume injection.
Description
technical field [0001] The invention relates to a polypropylene composition for manufacturing medical ampoules and a preparation method thereof, belonging to the field of polymer materials. The composition is used for blow-molding ampoules and used as packaging containers for small-dose injections in clinical medicine. Background technique [0002] Medical ampoules are a kind of medical packaging container used to hold small doses of injections. At present, my country's pharmaceutical manufacturers mainly produce glass ampoules. When the glass ampoule is opened, glass particles will contaminate the liquid medicine, which will bring hidden dangers to the patient's medication safety. At the same time, the bending of the glass neck by hand will easily cause accidental injury to the medical staff. Due to the high ductility of the material, the advantages of easy processing and no debris when opened, plastic ampoules are gradually being applied and promoted in the pharmaceutical...
Claims
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