Rapid advancement of molecular weight in polybenzazole oligomer dopes
US5089591A · kind A · utility
31Cited by
11References
35Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 19, 1990 |
| Grant date | Feb 18, 1992 |
| Priority date | — |
| Expiry date | Oct 19, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G73/22
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polybenzazole polymers can be advanced rapidly to high molecular weight at relatively high temperatures and high shear in a dehydrating solvent acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.