发明名称 |
LEAK-FREE STOPPER FOR A SYRINGE ASSEMBLY HAVING LOW BREAKLOOSE AND SUSTAINING FORCES |
摘要 |
A thermoplastic elastomer stopper that meets the desired material properties of a stopper for a syringe assembly is disclosed. The compression set of the thermoplastic elastomer stopper of the present disclosure is ≦̸50% when measured at 25% compression for 22 hrs at 70 degree C. The hardness of the thermoplastic elastomer stopper of the present disclosure is 40-70 Shore A. The viscosity of a thermoplastic elastomer stopper of the present disclosure is ≧70 Pa·s at 1,000 s−1 shear rate, ≧12.0 Pa·s at 10,000 s−1 shear rate, and ≧3.0 Pa·s at 50,000 s−1 shear rate when measured using a capillary rheometer at 205 degree C. (Die: Roundhole 20 mm length/1 mm diameter/180 degree inlet, Piston: d=15 mm, and melting time=7 min). The present non-lubricated stopper exhibits the required functional performance of a lubricated stopper. |
申请公布号 |
EP3062847(A1) |
申请公布日期 |
2016.09.07 |
申请号 |
EP20140796962 |
申请日期 |
2014.10.28 |
申请人 |
BECTON, DICKINSON AND COMPANY |
发明人 |
PRASAD, SHISHIR;COJOCARIU, GHEORGHE;KALIYAMOORTHY, SATHYA;SMITH, CHAD;KULSHRESTHA, ANKUR;GIDDES, RICHARD, G.;BONCZYNSKI, GERALD;ADDAE-MENSAH, KWEKU |
分类号 |
A61M5/31;A61M5/315;C08K5/20;C08L23/06;C08L27/18;C08L53/00;C08L53/02 |
主分类号 |
A61M5/31 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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