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A kind of safe and non-toxic polyvinyl chloride composition

A polyvinyl chloride, safe and non-toxic technology, applied in the field of polymer plastics, can solve the problems of easy decrease in material strength, high water content of plasticizer, high cost and price, and achieve good mechanical properties and thermal processing stability and increase The effect of high plastic efficiency and low cost

Active Publication Date: 2017-09-26
CHINA PETROLEUM & CHEM CORP
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  • Abstract
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  • Application Information

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Problems solved by technology

However, citrate plasticizers tend to become brittle at low temperatures, and the material strength tends to decrease at high temperatures; Chinese patent CN 101899188A discloses a medical PVC pellet, the plasticizer used is DINCH produced by BASF, and the Chinese name is Diisononyl cyclohexane 1,2-dicarboxylate is a non-phthalate plasticizer. The technical composition of the invention is: PVC resin 50~65%, DINCH 30~45%, heat stabilizer 3~5%, lubricant 1~2%, but this type of plasticizer has high water content, high viscosity, and low plasticizing efficiency. To achieve the same hardness, more plasticizers need to be added, and the cost is high

Method used

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  • A kind of safe and non-toxic polyvinyl chloride composition
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  • A kind of safe and non-toxic polyvinyl chloride composition

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Embodiment Construction

[0015] Below in conjunction with specific examples, the safe non-toxic polyvinyl chloride composition of the present invention is described further, and wherein embodiment 1 is the best embodiment.

[0016] Table 1 Composition (parts by weight) of the embodiment of the present invention

[0017]

[0018] The acid value of ESO≤0.3 mgKOH / g, the residual iodine value≤3 gI 2 / 100g; PVC resin VCM residue ≤ 2ppm, whiteness (160°C, 10min) ≥ 78%.

[0019] Table 2 Composition of comparative examples (parts by weight)

[0020]

[0021] The preparation method of embodiment and comparative example:

[0022] (1) Mixing of raw materials: Weigh the materials according to the ratio of raw materials, then add them to the high-speed mixer and mix until the mixing temperature is 100~110°C, then put the materials into the low-speed mixer and mix them until the temperature of the materials is cooled to about 40°C Time to discharge.

[0023] (2) Granulation process: The mixed materials ar...

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Abstract

A safe and non-toxic polyvinyl chloride composition belongs to the technical field of polymer plastics. It is characterized in that, the composition in parts by weight is: 100 parts of polyvinyl chloride, 45-60 parts of 1,2-diisooctyl cyclohexanedicarboxylate (DEHCH) plasticizer, calcium stearate and zinc stearate compound stable 0.2~1.0 parts of agent, 3~7 parts of epoxy soybean oil, 0.5~1.5 parts of trinonylphenyl phosphite, 0.1~0.5 parts of lubricant; the polyvinyl chloride VCM residue ≤ 2ppm, the average degree of polymerization is 1000 ~1300, whiteness (160℃, 10min) ≥78%. In the present invention, a plasticizer DEHCH, which is cheaper than the environmentally friendly plasticizer DINCH and has high plasticizing efficiency, is used together with a liquid auxiliary stabilizer to obtain a polyvinyl chloride with stable performance, simple process, low cost and high strength. Composition; DEHCH replaces traditional phthalate plasticizers, endows medical materials with non-toxic, environmental protection and safety.

Description

technical field [0001] A safe and non-toxic polyvinyl chloride composition belongs to the technical field of polymer plastics. Background technique [0002] PVC medical material is one of the main raw materials for the production of disposable medical infusion catheters and other medical supplies. Disposable medical products are required to be safe, non-toxic and environmentally friendly, which requires that the materials used in the production of medical products, such as PVC resin and processing aids, meet the requirements of safety and hygiene standards. At present, some PVC resins produced in China have passed FDA certification and fully meet the requirements of medical-grade polymer materials. However, due to the need to add plasticizers, heat stabilizers and other additives during the processing of the composition, the safety and environmental protection of the material is not good. Certainty. The most commonly used plasticizer is dioctyl phthalate (DOP), but a large...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/06C08K5/12C08K5/098C08K5/1515C08K5/526
Inventor 刘容德李静张桦刘浩桂俊杰孙培培王晓敏高磊
Owner CHINA PETROLEUM & CHEM CORP
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