Claims
- 1. A method for sterilizing an aromatic carbonate polymer, said method comprising:
- (i) imparting enhanced stability against sterilizing radiation to an aromatic carbonate polymer, comprising admixing an effective amount of a pyran compound effective to inhibit yellowing upon exposure to sterilizing radiation, said pyran compound is selected from the group consisting of hydrogenated pyran, non-hydrogenated pyran and substituted pyran wherein said substituted pyran has a substituent selected from the group consisting of alkyl, aryl, alkoxy and aryloxy, said substituent being positioned on any carbon atom in the pyran ring, and
- (ii) exposing said aromatic carbonate polymer to sterilizing radiation.
Parent Case Info
This is a continuation of co-pending application Ser. No. 07/136,682, filed on Dec. 22, 1987, now U.S. Pat. No. 4,876,309, which is a divisional of Ser. No. 769,277, filed on Aug. 26, 1985, abandoned, which is a continuation-in-part of Ser. No. 579,103, filed Feb. 10, 1984, abandoned.
US Referenced Citations (39)
Foreign Referenced Citations (5)
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Divisions (1)
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Number |
Date |
Country |
Parent |
769277 |
Aug 1985 |
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Continuations (1)
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Number |
Date |
Country |
Parent |
136682 |
Dec 1987 |
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Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
579103 |
Feb 1984 |
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