Radiation stable aromatic carbonate polymer compositions
US7374718B2 · kind B2 · utility
5Cited by
16References
12Claims
0Family size
Assignee
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Key dates
| Filing date | Oct 6, 2005 |
| Grant date | May 20, 2008 |
| Priority date | — |
| Expiry date | Aug 11, 2026 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/05
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A composition comprising an aromatic carbonate polymer and an amount of at least one solid cyclic aliphatic alcohol stabilizing compound sufficient to inhibit yellowing of the composition upon exposure to a sterilizing radiation, wherein said stabilizing compound is selected from the group consisting of 2,2,4,4-tetramethylcyclobutane-1,3-diol, 1,4-cyclohexanediol, and wherein said stabilizing compound is present in said composition in an amount of at least about 0.2 parts by weight per 100 parts by weight of said aromatic carbonate polymers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.