Claims
- 1. A medical article sufficiently irradiated to achieve sterilization, said article comprising an extruded admixture of (a) an aromatic carbonate polymer and (b) an effective amount of a stabilizing compound to inhibit yellowing upon sterilizing radiation exposure, wherein said compound is 2,2'-oxamide bis-(ethyl-3-(3,5-di-t- butyl-4-hydroxyphenyl)) propionate.
- 2. The composition of claim 1 wherein said aromatic carbonate polymer is a poly(bisphenol-A) carbonate.
- 3. The composition of claim 1 wherein said aromatic carbonate polymer is a poly(ester-carbonate).
- 4. The composition of claim 1 which further comprises a polyester resin.
- 5. The composition of claim 1 which contains 0.01-5.0 weight parts stabilizing compound per 100 weight parts polymer.
- 6. The composition of claim 1 which contains 0.01-0.50 weight parts stabilizing compound per 100 weight parts polymer.
- 7. The composition of claim 1 which comprises a plurality of stabilizing compounds.
- 8. The composition of claim 1 which further comprises a polyestercarbonate resin.
- 9. A method for inhibiting yellowing of irradiation sterilized aromatic carbonate polymer which comprises irradiation sterilizing a composition comprising an aromatic carbonate polymer and an anti-yellowing upon exposure to sterilization radiation effective amount of 2,2'-oxamide bis-(ethyl-3-(3,5di-t-butyl-4-hydroxyphenyl)) propionate.
- 10. A medical article sufficiently irradiated to achieve sterilization, said article comprising an extruded admixture of (a) an aromatic carbonate polymer and (b) an effective amount of a stabilizing compound to inhibit yellowing upon sterilizing radiation exposure, wherein said compound is an oxalic anilide.
- 11. A method for inhibiting yellowing of irradiation sterilized aromatic carbonate polymer which comprises irradiation sterilizing a composition comprising an aromatic carbonate polymer and an anti-yellowing upon exposure to sterilization radiation effective amount of an oxalic anilide.
- 12. A medical article sufficiently irradiated to achieve sterilization, said article comprising an extruded admixture of (a) an aromatic carbonate polymer and (b) an effective amount of a stabilizing compound to inhibit yellowing upon sterilizing radiation exposure, wherein said compound is an thio urea.
- 13. A method for inhibiting yellowing of irradiation sterilized aromatic carbonate polymer which comprises irradiation sterilizing a composition comprising an aromatic carbonate polymer and an anti-yellowing upon exposure to sterilization radiation effective amount of thio urea.
Parent Case Info
This is a divisional of co-pending application Ser. No. 769,277 filed on Aug. 26, 1985 which is a continuation-in-part of co-pending application Ser. No. 579,103, filed 2/10/84all now abandoned.
US Referenced Citations (33)
Foreign Referenced Citations (3)
Number |
Date |
Country |
0162012 |
Aug 1985 |
EPX |
44-2480 |
Feb 1969 |
JPX |
5084352 |
Jun 1980 |
JPX |
Divisions (1)
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Number |
Date |
Country |
Parent |
769277 |
Aug 1985 |
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Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
579103 |
Feb 1984 |
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