Systems and methods for forming high performance compressible objects
US8715545B2 · kind B2 · utility
1Cited by
59References
5Claims
0Family size
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Key dates
| Filing date | Sep 3, 2010 |
| Grant date | May 6, 2014 |
| Priority date | — |
| Expiry date | Dec 26, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J3/16
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present systems and methods utilize a polyamic acid solution as a precursor to form a polyimide bead having desired properties. The polyamic acid solution may be formed into a polyamic acid droplet. The polyamic acid droplet is then processed to form a polyamic acid bead, such as by extraction of solvent to concentrate the polyamic acid or by partial chemical imidization of the polyamic acid. The polyamic acid bead is then better able to retain its shape during subsequent processing steps, such as drying and pressurizing, before final thermal imidization.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.