US 5308598
PLEXIFILAMENTARY FIBERS FROM PITCH
Assignee
E. I. DU PONT DE NEMOURS AND COMPANY
Filed
Jan 31, 1991
Granted
May 3, 1994
Location
MIDLOTHIAN VA US
Abstract
A process is provided for flash-spinning plexifilamentary fiber from pitch. The fibers can be stabilized and graphitized. The flash-spinning requires polyethylene amounting to 0.3 to 3.5% of the spin mixture (4 to 20% in the resultant fiber) for satisfactory plexifilament formation.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
Jul 22, 1991
Rescinded
Aug 31, 1993
Duration
2 years, 1 month
Inventor
- 1DON M. COATES
Record Details
- Patent number
- US 5308598
- Application
- 07648767
- Aerospace match
- No
- Dataset source
- 35 USC §181 SO records
Browse by Assignee
E. I. DU PONT DE NEMOURS AND COMPANYBack to patent indexSource: USPTO 35 USC §181 secrecy order records