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High-transparent medical PVC pellet and preparation method thereof

A PVC resin, transparent technology, applied in the direction of catheters, etc., can solve the problems of large amount of addition, affecting the appearance and application of medical equipment, reducing the transparency of PVC materials, etc.

Active Publication Date: 2013-07-31
常州恒禾丰精密制造科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a kind of highly transparent medical PVC granule and preparation method thereof, mainly solve the calcium / zinc heat stabilizer and the lubricant used in the production formula of medical PVC granule because efficiency is low, cause the addition amount is relatively large, therefore It will significantly reduce the transparency of PVC materials, thereby affecting the appearance of medical devices and the technical problems of the clinical application of some high-transparency medical devices. It can increase the transparency of medical PVC pellets from the original 82% to more than 87%. , the haze dropped from 2.7 to below 1.4

Method used

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  • High-transparent medical PVC pellet and preparation method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0012] A kind of highly transparent medical PVC granule, it is made of 100 parts by weight of PVC resin, 40 parts by weight of plasticizer DOP, 0.8 parts by weight of high-efficiency calcium / zinc heat stabilizer, 5 parts by weight of auxiliary heat stabilizer and 0.5 parts by weight of high-efficiency lubricant Composition; Wherein: described PVC resin is polyvinyl chloride resin of suspension method, and polymerization degree is 1300; Described high-efficiency calcium / zinc heat stabilizer is by weight percentage 30~40% calcium stearate, 10~20% zinc octanoate, 15-25% zinc stearate, 10-20% pentaerythritol and 10-20% N,N'-diphenylthiourea; the auxiliary heat stabilizer is epoxy Soybean oil; Described efficient lubricant is the P-40 of R&H.

[0013] The specific preparation steps are: a high-efficiency calcium / zinc heat stabilizer composed of calcium stearate, zinc octylate, zinc stearate, pentaerythritol and N,N'-diphenylthiourea in proportion according to the ratio of 1:5 Add ...

Embodiment 2

[0015] A kind of highly transparent medical PVC granule, it is made of PVC resin 100 weight parts, plasticizer DOP 63 weight parts, high-efficiency calcium / zinc heat stabilizer 0.6 weight part, auxiliary heat stabilizer 3 weight parts and high-efficiency lubricant 0.3 weight part Composition; Wherein: described PVC resin is polyvinyl chloride resin of suspension method, and polymerization degree is 1300; Described high-efficiency calcium / zinc heat stabilizer is by weight percentage 30~40% calcium stearate, 10~20% zinc octanoate, 15-25% zinc stearate, 10-20% pentaerythritol and 10-20% N,N'-diphenylthiourea; the auxiliary heat stabilizer is epoxy Soybean oil; Described efficient lubricant is the P-40 of R&H.

[0016] The preparation method is the same as in Example 1.

Embodiment 3

[0018] A kind of highly transparent medical PVC granular material, it is made of 100 parts by weight of PVC resin, 70 parts by weight of plasticizer DOP, 0.3 parts by weight of high-efficiency calcium / zinc heat stabilizer, 1 weight part of auxiliary heat stabilizer and 0.1 weight part of high-efficiency lubricant Composition; Wherein: described PVC resin is polyvinyl chloride resin of suspension method, and polymerization degree is 1300; Described high-efficiency calcium / zinc heat stabilizer is by weight percentage 30~40% calcium stearate, 10~20% zinc octanoate, 15-25% zinc stearate, 10-20% pentaerythritol and 10-20% N,N'-diphenylthiourea; the auxiliary heat stabilizer is epoxy Soybean oil; Described efficient lubricant is the P-40 of R&H.

[0019] The preparation method is the same as in Example 1.

[0020] The medical PVC granules prepared by the method of the present invention are tested and compared with relevant performances.

[0021]

[0022]

[0023] The inven...

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Abstract

The invention relates to a high-transparent medical PVC pellet and a preparation method thereof. The pellet comprises 100 parts by weight of PVC resin, 40-70 parts by weight of plasticizer DOP, 0.3-0.8 parts by weight of high-efficient calcium / zinc heat stabilizers, 1-5 parts by weight of auxiliary heat stabilizers, and 0.1-0.5 parts by weight of high-efficient lubricants; wherein, the PVC resin is suspension-method polyvinyl chloride resin with a polymerization degree of 1300; the high-efficient calcium / zinc heat stabilizer is a composite comprising 30-40% of calcium stearate, 10-20% of zincoctoate, 15-25% of zine stearate, 10-20% of pentaerythritol, and 10-20% of N,N'-bis(phenyl thiourea) on a weight basis; the auxiliary heat stabilizer is epoxy soybean oil; the high-efficient lubricant is R&H P-40. The transparency of a medical PVC pellet can be increased from an original level of 82% to above 87%, and the haze can be decreased from 2.7 to below 1.4.

Description

technical field [0001] The invention relates to a modification technology of medical PVC pellets, in particular to a highly transparent medical PVC pellet and a preparation method thereof. Background technique [0002] Medical PVC pellets are one of the main raw materials widely used in disposable medical devices at home and abroad. Due to the characteristics of safety, low price, and excellent comprehensive performance, in addition to traditional application fields such as infusion sets and infusion bags, various other applications have also been more and more popularized. For example: various oxygen masks, anesthesia masks, tracheal intubation, analgesic pumps, etc. [0003] The existing medical PVC pellet product formula (according to parts by weight) is: PVC resin: 100 parts, plasticizer DOP: 40~70 parts, calcium / zinc heat stabilizer: 2.0 parts, auxiliary heat stabilizer: 1~5 parts Parts and lubricant: 0.5~0.8 parts; Among them: the lubricant is polyethylene wax and st...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/06C08K5/098C08K5/053C08K5/405C08K5/1515B29B9/06B29C47/92A61L29/04B29C48/92
CPCB29C48/04
Inventor 陆锋胡丽萍
Owner 常州恒禾丰精密制造科技有限公司