PLASTICISED POLYVINYLCHLORIDE COMPOSITION FOR MEDICAL DEVICES Russian patent published in 2014 - IPC C08L27/06 C08K5/09 C08K5/10 C08K5/13 

FIELD: medicine, pharmaceutics.

SUBSTANCE: invention refers to the medical industry and concerns a plastic compound of a polyvinylchloride (PVC) composition for two types of medical devices applicable for extrusion treatment and pressure moulding. The plasticised composition for the medical devices contains polyvinylchloride resin with K-value 70, epoxidised vegetable oil, calcium stearate, zinc stearate, polyethylene wax as an outer lubricant, trioctyl trimellitate (TOTM) or 1,2-cyclohexane-dicarboxylic acid-diisonyl-ester or acetyl-tri-butyl-citrate (ATBC) as a plasticising agent. Besides, 4-methyl-2,6-di-tert-butylphenol (ionole) or 4-methyl-2,6-isobornylphenol is used as a stabilising agent and antioxidant. Additionally, the PVC composition can contain polyvinylchloride resin with K-value from 58 to 64 units in specific proportions. The invention is used for various PVC plastic compound devices, films, main lines (tubes) and devices produced by extrusion and pressure moulding applied for producing polymer medical devices, preferentially for blood banking. The devices made of the composition can be sterilised both by radiation, and steam.

EFFECT: invention provides the fixed properties of the devices and stored products over the whole shelf life. The plastic compound can be processed well by using additional outer lubricants and possesses high thermal stability.

3 cl, 3 ex