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Mixture for disposable medical infusion product and preparation method of mixture

A compound and disposable technology, applied in the field of medical materials, can solve problems such as easy cracking and insufficient elasticity, achieve good biocompatibility, ensure treatment safety, improve elasticity and crack resistance

Active Publication Date: 2018-03-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of easy cracking and insufficient elasticity of existing disposable medical infusion products, this application provides a mixture and a preparation method, aiming at improving the elasticity of infusion products and avoiding cracking

Method used

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  • Mixture for disposable medical infusion product and preparation method of mixture
  • Mixture for disposable medical infusion product and preparation method of mixture
  • Mixture for disposable medical infusion product and preparation method of mixture

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] Step (a): Add 2.5 liters of cyclohexane and raffinate mixture into a 5 liter polymerization kettle purged with nitrogen. The temperature of the mixture was raised to 50° C., 10 g of styrene and 0.25 g of regulator tetrahydrofurfuryl alcohol ethyl ether were added first, and then 3.57 mmol of n-butyllithium was added to initiate the reaction.

[0060] Step (b): After stirring and reacting for 20 to 60 minutes, add a mixture of 20 g of isoprene and 160 g of butadiene to the active polymer, during which the reaction temperature is controlled at 40 to 60 ° C, and the reaction is stirred for 20 to 60 minutes;

[0061] Step (c): Then add 10 g of styrene to the active polymer, and stir for 20 to 60 minutes to react.

[0062] Step (d): The polymer after the polymerization in step (c) is pressed into a 5-liter hydrogenation tank, 3.0 mmol of n-butyllithium is added, the stirring reaction is terminated by passing hydrogen gas for 5-25 minutes, and 68 mmg of benzoic acid is added ...

Embodiment 2

[0064] According to the method of Example 1, but changing the contents of styrene, isoprene, butadiene, butyllithium and regulators, TPEs numbered 2, 3, 4, 5, and 6 in Table 1 were prepared.

[0065] Table 1 Structure of TPE

[0066] Numbering

Embodiment 3

[0068] On the co-rotating twin-screw extruder, the TPE numbered 1-6 is cut into particles, wherein the temperature of the extrusion feeding section is 180°C; the conveying section is 200°C; the homogenizing metering section is 220°C; the head temperature is 210°C; The screw speed is 200rpm; then, the formula is 100 parts of TPE particles prepared by each number, respectively, 30 parts of PP and 0.4 parts of antioxidant (specific materials such as 1010) are melted and mixed in a co-rotating twin-screw extruder, and made pellets to obtain the non-PVC material of the present invention. Wherein the extrusion feeding section temperature is 190°C; the conveying section is 210°C; the homogenizing metering section is 220°C; the head temperature is 210°C; the screw speed is 240rpm. In this embodiment, the structures of the TPEs are shown in Table 1 respectively.

[0069] Through Example 3, TPE, PP, and antioxidants of each number in Examples 1 and 2 were mixed to prepare corresponding...

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Abstract

The invention discloses a mixture for a disposable medical infusion product. The mixture is prepared from the following materials in parts by weight: 100 parts of TPE (thermoplastic elastomer), 20 to45 parts of polypropylene, and 0.1 to 2.5 parts of an antioxidant, wherein the TPE is a hydrogenated block polymer formed by hydrogenating an S1-b-B / I-b-S2 block polymer; the hydrogenation degree of aB / I block is higher than or equal to 80%; in the S1-b-B / I-b-S2 block polymer, S1 and S2 are styrene blocks; B / I is a butadiene and isoprene random copolymerization block; the weight ratio of the styrene blocks to the butadiene and isoprene random copolymerization block (B / I) is 10 / 90-30 / 70; an isoprene unit accounts for 5 to 30 weight% of the S1-b-B / I-b-S2 block polymer; the weight content of the1,2- structure of the isoprene unit is 45 to 85%. The hydrogenated block polymer under the content of the isoprene unit and the weight content of the 1,2- structure is mixed with PP (polypropylene),thus contributing improvement of the defects of cracking and relatively low elasticity of the prepared medical infusion product.

Description

technical field [0001] The invention relates to medical materials, in particular to a compound for disposable medical infusion products and a preparation method. technical background [0002] Disposable infusion devices are the most basic medical devices in clinical medicine. The material quality of infusion tubes and infusion bags is directly related to medical effects, harm to the human body and potential impacts. Commonly used infusion tubes and infusion bags are composite materials based on polyvinyl chloride (PVC). [0003] PVC infusion tubes and infusion bags have the advantages of not easy to break, high transparency, no kink in normal use, high temperature sterilization and good mechanical properties. Due to the relatively hard PVC material, for a long time, medical infusion tubes and infusion bags at home and abroad have begun to be made of DEHP plasticized PVC. During the infusion process, the DEHP of the PVC infusion tube will be released into the infusion solut...

Claims

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Application Information

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IPC IPC(8): C08L53/02C08L23/12C08F297/04C08F8/04B29C47/92B29C48/92
CPCB29C48/92B29C2948/9259B29C2948/92704C08F8/04C08L53/025C08L2201/08C08L2203/02C08L23/12C08F297/046
Inventor 梁红文李望明刘先珍蒋文英
Owner CHINA PETROLEUM & CHEM CORP
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