Chromium carbonyl complexes of polyamide
US5233004A · kind A · utility
18Cited by
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14Claims
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Key dates
| Filing date | May 20, 1992 |
| Grant date | Aug 3, 1993 |
| Priority date | — |
| Expiry date | May 20, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G69/48
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Disclosed herein are chromium carbonyl complexes of polyamides containing units derived from aromatic diamines in which about 10 to about 90% of those units are complexed with a chromium carbonyl compound, and a process for making them. When aramids are used, the solubility of the polymer in organic solvents is enhanced, and in the case of certain aramids lyotropic solutions are formed. These solutions can be used to make anisotropic films and fibers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.