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Blood-collecting vessel applying biodegradable polyester granule and preparation method thereof

A technology for degrading polyester and masterbatch, which is applied in the field of polymer materials, can solve the problems that cannot be recycled again, difficult materials, large medical waste, etc., and achieve good thermal processing characteristics, satisfactory waterproof and permeability, and good biodegradation performance Effect

Inactive Publication Date: 2017-11-21
QINGDAO AMA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the potential infection and hazards of the blood-collected tubing column, it cannot be recycled again. In addition, the material is difficult to degrade, which will generate a large amount of medical waste and cause environmental pollution.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A degradable polyester masterbatch for blood collection tubes, comprising raw materials in the following weight fractions: 20% polylactic acid, 25% poly(di(butylene terephthalate)) unit polyester, poly(terephthalic acid) Butylene glycol ester-ε-caprolactone) unit polyester 25%, ε-caprolactone 7%, ethylene glycol 15%, 1,4-butanediol 8%.

[0021] In this embodiment, the melting point range of the polyester masterbatch is 120-140°C; the slice surface static contact angle of the polyester masterbatch is ≤60°, and the intrinsic viscosity is 0.38-0.48dL / g; the polyester masterbatch The molecular weight distribution of lactic acid is 2000-5000, the molecular weight distribution of poly(butylene terephthalate) unit polyester is 15000-18000, poly(butylene terephthalate-ε-caprolactone ) The molecular weight distribution of the unit polyester is 10000-16000.

[0022] A method for preparing a degradable polyester masterbatch for blood collection tubes as described above, comprisin...

Embodiment 2

[0027] A degradable polyester masterbatch for blood collection tubes, comprising the following raw materials in weight fractions: 10% polylactic acid, 35% poly(di(butylene terephthalate)) unit polyester, poly(terephthalic acid) Butanediol ester-ε-caprolactone) unit polyester 15%, ε-caprolactone 10%, ethylene glycol 20%, 1,4-butanediol 10%.

[0028] A method for preparing a degradable polyester masterbatch for blood collection tubes as described above, comprising the steps of:

[0029] (1) Under the protection of nitrogen, polylactic acid, ethylene glycol, and 1,4-butanediol are mixed and reacted; wherein, the reaction temperature is 165° C., the reaction pressure is 0.25 MPa, and the reaction time is 3 hours;

[0030] (2) Add poly(butylene terephthalate) unit polyester, poly(butylene terephthalate-ε-caprolactone) unit polyester and ε-caprolactone, 150 ℃ for 45 minutes;

[0031] (3) Put the above-mentioned materials into a twin-screw extruder, extrude and granulate, wherein t...

Embodiment 3

[0033] A degradable polyester masterbatch for blood collection tubes, comprising the following raw materials in weight fractions: 30% polylactic acid, 15% poly(di(butylene terephthalate)) unit polyester, poly(terephthalic acid) Butanediol ester-ε-caprolactone) unit polyester 35%, ε-caprolactone 5%, ethylene glycol 10%, 1,4-butanediol 5%.

[0034] A method for preparing a degradable polyester masterbatch for blood collection tubes as described above, comprising the steps of:

[0035] (1) Under nitrogen protection, polylactic acid, ethylene glycol, and 1,4-butanediol are mixed and reacted; wherein, the reaction temperature is 150°C, the reaction pressure is 0.25MPa, and the reaction time is 3.5 hours;

[0036] (2) Add poly(butylene terephthalate) unit polyester, poly(butylene terephthalate-ε-caprolactone) unit polyester and ε-caprolactone, 140 ℃ for 35 minutes;

[0037] (3) Put the above materials into a twin-screw extruder, extrude and granulate, wherein the barrel temperatur...

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Abstract

The invention belongs to the technical field of high-polymer materials and particularly relates to a blood-collecting vessel applying biodegradable polyester granule and a preparation method thereof. The blood-collecting vessel applying biodegradable polyester granule is prepared from, by weight, 10%-30% of polylactic acid, 15%-35% of poly (2 (terephthalic acid) butylene glycol ester) unit polyester, 15%-35% of poly (ethylene terephthalate-epsilon-caprolactone) unit polyester, 5%-10% of epsilon-caprolactone, 10%-20% of ethylene glycol and 5%-15% of 1,4-butanediol. After the polyester granule is applied to a blood-collecting vessel, the waterproof permeability performance can be guaranteed, degradable environment protection can be achieved, and the problem about medical waste is favorably reduced.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a degradable polyester masterbatch for blood collection tubes and a preparation method thereof. Background technique [0002] Polyester is a general term for thermoplastic linear saturated polyester represented by polyethylene terephthalate (PET). Due to its transparent, non-toxic and unbreakable characteristics, this material has more and more applications in medical devices. Wide range of applications. For example, there are two types of blood collection tube body materials used in blood sample collection in existing medical clinical tests, one is glass and the other is PET. Because the prior art focuses more on the waterproof and permeable properties of polyester materials used in blood collection tubes, while ignoring the development of environmentally friendly materials, most of the materials used in products are refractory materials. Due to the poten...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L67/00C08L67/04C08J3/22
CPCC08L67/02C08J3/22C08J2367/00C08J2367/02C08J2467/04C08L67/00C08L2201/06C08L2203/18C08L2205/02C08L2205/03C08L67/04
Inventor 翟岱青
Owner QINGDAO AMA CO LTD
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