发明名称 |
Process for the production of polyamide moulded parts with improved crystallization behavior |
摘要 |
The invention relates to a process for the production of a polyamide molded part from a polyamide composition comprising 0.01-5 wt. % polyamide-4.6 and 99.99-95 wt. % of a polyamide with a melting point that is lower than that of polyamide-4.6. The polyamide composition is obtained by mixing in the melt of a blend of granules of the polyamide with the low melting point (A) and a composition (B) of the polyamide-4.6 in the polyamide with the low melting point, the polyamide-4.6 content of (B) amounting to 2-50 wt. % and B having been obtained at a temperature above the melting point of polyamide-4.6.The polyamide with a low melting point is preferably polyamide-6. The process results in a permanent 15° C. increase in the crystallisation onset temperature of nylon-6. A 30% gain in cycle time relative to polyamide-6 nucleated with the aid of microtalc was realised for injection-molding of relatively large articles.
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申请公布号 |
US6576715(B2) |
申请公布日期 |
2003.06.10 |
申请号 |
US20010792065 |
申请日期 |
2001.02.26 |
申请人 |
DSM N.V. |
发明人 |
BRINK TED.;SHAM CHI;COHEN JACOB L. |
分类号 |
C08J5/18;C08J3/00;C08L77/00;C08L77/02;C08L77/06;D01F6/90;(IPC1-7):C08L77/06 |
主分类号 |
C08J5/18 |
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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