Controlling the coefficient of thermal expansion of liquid crystalline polymer based components
US5529741A · kind A · utility
11Cited by
22References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 7, 1993 |
| Grant date | Jun 25, 1996 |
| Priority date | — |
| Expiry date | Sep 7, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2023/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention provides methods of preparing thermotropic and lyotropic liquid crystalline polymer film-based and tubular components having a controlled CTE and components produced by such methods. The methods of the present invention include treating a melt or dope of liquid crystalline polymer with simultaneous biaxial shearing forces and with an electric or magnetic field normal to each of the biaxial shearing forces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.