Methods for reducing or eliminating defects in polymer workpieces
US7785517B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 24, 2007 |
| Grant date | Aug 31, 2010 |
| Priority date | — |
| Expiry date | Jan 5, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G73/1067
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present disclosure provides novel methods of producing a composition, such as, but not limited to, a polyimide composition. The methods in their most general form comprise providing a workpiece, suspending the workpiece and subjecting the suspended workpiece to processing such that the workpiece undergoes a transformation from a first state to a second state. By maintaining the workpiece in a suspended state during processing, processing-related defects are reduced or eliminated. Using such methods, the present disclosure provides compositions that are have no or reduced processing-related defects. In addition, the compositions are more consistent in chemical and physical properties and are cheaper and more economical to produce (since less product is rejected as unsuitable).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.