发明名称 |
POLYAMIDE MOLDING COMPOUND AND ITS USE FOR PRODUCING TRANSPARENT, HOT-STEAM-STERILIZABLE MOLDED PARTS AND EXTRUDATES |
摘要 |
The invention relates to a polyamide molding material or copolyamide molding material and the use of such a polyamide molding material or copolyamide molding material for producing steam-sterilizable transparent moldings and extrudates. This polyamide molding material is characterized in that it comprises at least one copolyamide formed from 35-42 mol % of bis(4-amino-3-methylcyclohexyl)methane (MACM), 35-42 mol % of isophthalic acid (IPS) and 16-30 mol % of laurolactam (LC12). MACM may be replaced up to 50% by bis(4-aminocyclohexyl)-methane (PACM) and IPA up to 50% by terephthalic acid (TPA). The polyamide molding material may also be a blend of copolyamides or a blend of copolyamides with polyamide 12. The relative viscosity (RV) of the polyamide molding material or copolyamide molding material is in any case adjusted to a value which is greater than 1.45. Steam-sterilizable and transparent standard specimens which are produced from such polyamide molding materials or copolyamide molding materials and whose composition corresponds to the transparent moldings and extrudates have a tensile strain at break which, after undergoing at least 140 and especially preferably at least 350 steam sterilization cycles, is above the stretching limit.
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申请公布号 |
US2010022742(A1) |
申请公布日期 |
2010.01.28 |
申请号 |
US20060162981 |
申请日期 |
2006.01.31 |
申请人 |
BUHLER FRIEDRICH SEVERIN;HALA RALF |
发明人 |
BUHLER FRIEDRICH SEVERIN;HALA RALF |
分类号 |
C08G69/14 |
主分类号 |
C08G69/14 |
代理机构 |
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代理人 |
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地址 |
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