Radiation stable aromatic carbonate polymer compositions
First Claim
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1. An aromatic carbonate polymer composition, comprising:
- an aromatic carbonate polymer; and
a solid phase cyclic aliphatic alcohol compound in an amount effective to inhibit color formation upon exposure to sterilizing radiation, wherein said solid phase cyclic aliphatic alcohol compound is 2,2,4,4-tetramethylcyclobutane-1,3-diol, wherein the solid phase cyclic aliphatic alcohol compound is in an amount of at least 0.1 parts by weight per 100 parts by weight of said aromatic carbonate polymer.
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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.
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Citations
12 Claims
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1. An aromatic carbonate polymer composition, comprising:
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an aromatic carbonate polymer; and a solid phase cyclic aliphatic alcohol compound in an amount effective to inhibit color formation upon exposure to sterilizing radiation, wherein said solid phase cyclic aliphatic alcohol compound is 2,2,4,4-tetramethylcyclobutane-1,3-diol, wherein the solid phase cyclic aliphatic alcohol compound is in an amount of at least 0.1 parts by weight per 100 parts by weight of said aromatic carbonate polymer. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of color stabilizing an aromatic carbonate polymer composition, the method comprising:
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mixing an aromatic carbonate polymer and a solid phase cyclic aliphatic alcohol compound to form a homogeneous mixture, wherein the solid phase cyclic aliphatic alcohol compound is 2,2,4,4-tetramethylcyclobutane-1,3-diol, wherein the solid phase cyclic aliphatic alcohol compound is in an amount of at least 0.1 parts by weight per 100 parts by weight of said aromatic carbonate polymer; molding the composition into an article; and exposing the article to radiation in an amount effective to sterilize the article and produce a sterilized article. - View Dependent Claims (9, 10, 11, 12)
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Specification