Novel radiopaque heavy metal polymer complexes, compositions of matter and articles prepared therefrom
US4882392A · kind A · utility
12Cited by
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21Claims
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Key dates
| Filing date | Nov 18, 1988 |
| Grant date | Nov 21, 1989 |
| Priority date | — |
| Expiry date | Nov 18, 2008 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2250/0098
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Novel radiopaque materials comprise heavy metal salts, such as bismuth and uranium salts complexed with a polymer. The metallic complexes which are permanent, nonleachable and have radiopacities at least equivalent to that of aluminum do not adversely affect the mechanical and physical properties of compositions. They are useful as medical and dental resins, in fabricating medical and dental appliances, prosthetic devices, radiation shielding devices and radiopaque polyester fabrics for clothing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.