发明名称 |
POLYIMIDE FIBERS |
摘要 |
A polyimide fiber having textile physical property characteristics and the process of melt extruding same from a polyimide powder. Polyimide powder formed as the reaction product of the monomers 3,4'-ODA and ODPA, and endcapped with phthalic anhydride to control the molecular weight thereof, is melt extruded in the temperature range of 340 DEG C to 360 DEG C and at heights of 100.5 inches, 209 inches and 364.5 inches. The fibers obtained have a diameter in the range of 0.0068 inch to 0.0147 inch; a mean tensile strength in the range of 15.6 to 23.1 ksi; a mean modulus of 406 to 465 ksi; and a mean elongation in the range of 14 to 103 %. |
申请公布号 |
WO9800590(A1) |
申请公布日期 |
1998.01.08 |
申请号 |
WO1997US11286 |
申请日期 |
1997.06.27 |
申请人 |
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE |
发明人 |
ST. CLAIR, TERRY, LEE;FAY, CATHARINE, CROALL;WORKING, DENNIS, CAMERON |
分类号 |
C08G73/10;D01F6/74;(IPC1-7):D01F6/74 |
主分类号 |
C08G73/10 |
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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