Delustring medical soft PVC modified material with low temperature resistance and low DOP precipitation

A modified material and low-temperature-resistant technology, which is applied in the field of matting medical soft PVC modified materials, can solve the problems of low-temperature flexibility, sticky surface, and large plasticizer precipitation, etc., achieve excellent precipitation resistance, improve matting performance, The effect of excellent low temperature resistance

Active Publication Date: 2011-04-20
CHENGDU XINJIN SHIFENG MEDICAL APP ANDINSTR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at the same time, the use of PVC materials to prepare infusion (blood) bags has the following disadvantages: 1) Poor flexibility at low temperature, especially when it is below -20°C, it becomes hard and easy to break; 2) DOP in PVC materials has a large migration, which is harmful to human health
3) Liquid separation bags on the market are prone to stickiness in a higher temperature environment
In order to solve the first problem, most manufacturers of PVC pellets currently use NBR, TPU, MBS, CPE, etc. to improve the low-temperature toughness of ...

Method used

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  • Delustring medical soft PVC modified material with low temperature resistance and low DOP precipitation
  • Delustring medical soft PVC modified material with low temperature resistance and low DOP precipitation
  • Delustring medical soft PVC modified material with low temperature resistance and low DOP precipitation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Matting resin powder (polymerization degree 1000~1500, gel content 19.0%~25.0%) 35 parts

[0029] Ordinary resin powder (polymerization degree 1000~1800) 65 parts

[0030] ACR-201 2 parts

[0031] Plasticizer: DOP 60 parts

[0032] Liquid Calcium Zinc 0.9 parts

[0033] Tris(nonylphenyl) phosphite 0.3 parts

[0034] Auxiliary stabilizer: 4 parts of epoxy soybean oil

[0035] Oxidized polyethylene wax 0.2 parts

[0036] The preparation method is as follows:

[0037] Mixing: Add PVC resin powder, ACR and stabilizer to the high-speed mixer at low speed. The low-speed operation speed is 441rpm; when the temperature reaches 65°C, add DOP, antioxidant, epoxy soybean oil, and turn to high speed after 1.5min. , the high-speed operation speed is 877rpm; when the temperature reaches 110°C, add lubricant, continue to stir until 145°C and discharge the material to the cold pot until the temperature of the material reaches about 30°C;

[0038] Granulation: use SJSZ-65 twin-sc...

Embodiment 2

[0043] Matting resin powder (polymerization degree 1000~1500, gel content 19.0%~25.0%) 20 parts

[0044] Ordinary resin powder (polymerization degree 1000~1800) 80 parts

[0045] Plasticizer: DOP 20 parts

[0046] Liquid calcium zinc 0.8 part

[0047] Tris(nonylphenyl) phosphite 0.2 parts

[0048] Auxiliary stabilizer: epoxy soybean oil 1 part

[0049] Oxidized polyethylene wax 0.2 parts

[0050] The preparation method is as in Example 1.

Embodiment 3

[0052] Matting resin powder (polymerization degree 1000~1500, gel content 19.0%~25.0%) 80 parts

[0053]Ordinary resin powder (polymerization degree 1000~1800) 20 parts

[0054] ACR-201 5 copies

[0055] Plasticizer: DOP 80 parts

[0056] Liquid Calcium Zinc 3 parts

[0057] Phosphite tris(nonylphenyl ester) 1.5 parts

[0058] Auxiliary stabilizer: 6 parts of epoxy soybean oil

[0059] Oxidized polyethylene wax 0.8 parts

[0060] The preparation method is as in Example 1.

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Abstract

The invention discloses a delustring medical soft PVC modified material with low temperature resistance and low DOP precipitation, which is prepared from the following ingredients in parts by weight: 100 parts of PVC resin powder, wherein the PVC resin powder consists of the following ingredients in parts by weight: 20% to 80% of delustring resin powder ( with the degree of polymerization ranging from 1000 to 1500 and 19.0% to 25.0% of the content of tetrahydrofuran insoluble substances, i.e. gel), 20 to 80% of common resin powder (with the degree of polymerization ranging from 1000 to 1800); 0 to 5 parts of acrylate copolymer modifier ACR, 20 to 80 parts of plasticizer DOP, 0.8 to 3 parts of stabilizer, 0.2 to 1.5 parts of antioxidant, 1 to 6 parts of assistant stabilizer, i.e. epoxidized soybean oil, and 0.2 to 0.8 parts of lubricant. The delustring medical soft PVC modified material includes excellent low temperature resistance and low plasticizer precipitation property, has the characteristics of delustring and is suitable for the manufacturing of disposable medical liquid (blood) infusion thin-film bag and soft catheter.

Description

[0001] technical field [0002] The invention relates to the field of PVC modified materials, in particular to a matting medical soft PVC modified material resistant to low temperature and low DOP precipitation. Background technique [0003] PVC is one of the five general-purpose plastics. Plasticized PVC has many advantages such as high strength and modulus, softness, good resilience, transparency and low price, so it is the main material for making disposable medical infusion devices. However, at the same time, the use of PVC materials to prepare infusion (blood) bags has the following disadvantages: 1) Poor flexibility at low temperature, especially when it is below -20°C, it becomes hard and easy to break; 2) DOP in PVC materials has a large migration, which is harmful to human health . 3) The liquid separation bags on the market tend to become sticky in a higher temperature environment. In order to solve the first problem, most manufacturers of PVC pellets curren...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L51/00C08K5/00C08K5/1515C08K5/098C08K5/526
Inventor 张晓董合军车祎李静
Owner CHENGDU XINJIN SHIFENG MEDICAL APP ANDINSTR CO LTD
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