| 发明名称 |
METHOD FOR GRANULATING POLYAMIDE OR POLYAMIDE COMPOSITION |
| 摘要 |
The present invention provides a method for granulating a polyamide or a polyamide composition, whereby it becomes possible to granulate even a polyamide that has such a melt viscosity that the polyamide cannot be pelletized into a strand-like shape easily. In the present invention, a polyamide, whose melt viscosity at glass transition temperature+160° C. and a shear rate of 100 s−1 is 3 Pa·s to 200 Pa·s and whose terminal amino group concentration is 5 μeq/g to 70 μeq/g, is melted by heating to a range of glass transition temperature+160° C. to glass transition temperature+180° C. of the polyamide, and then is solidified by dropping the molten polyamide in the form of granules onto a metallic belt, thereby producing granules. |
| 申请公布号 |
US2016347915(A1) |
申请公布日期 |
2016.12.01 |
| 申请号 |
US201515114754 |
申请日期 |
2015.01.08 |
| 申请人 |
MITSUBISHI GAS CHEMICAL COMPANY, INC. |
发明人 |
ODA Takafumi;NAKAMURA Takashi;KUROSE Hideyuki;KATO Tomonori |
| 分类号 |
C08J3/12;C08G69/26;B29B13/04;C08L77/06;B29B9/12;C08G69/28;C08G69/32 |
主分类号 |
C08J3/12 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A method for granulating a polyamide, comprising the steps of:
melting polyamide (A), whose melt viscosity at glass transition temperature+160° C. and a shear rate of 100 s−1 is 3 Pa·s to 200 Pa·s and whose terminal amino group concentration is 5 μeq/g to 70 μeq/g, by heating to a range of glass transition temperature+160° C. to glass transition temperature+180° C.; and dropping the resultant in the molten state in granular forms onto a metal belt for solidification to obtain granules. |
| 地址 |
Tokyo JP |
