Stabilization of polyetherimide sulfones
First Claim
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1. A composition comprising:
- polyetherimide sulfone resin having anhydride end groups in an amount that is in excess of the amount of amine functional end groups; and
a phosphorus containing stabilizer.
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Abstract
A composition comprising a phosphorus containing stabilizer and a polyetherimide sulfone resin having an amount of anhydride functional end groups in excess of the amount of amine functional end groups. The composition may optionally comprise a hindered phenol.
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Citations
21 Claims
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1. A composition comprising:
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polyetherimide sulfone resin having anhydride end groups in an amount that is in excess of the amount of amine functional end groups; and
a phosphorus containing stabilizer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A process to prepare a stabilized polyetherimide sulfone resin comprising
preparing polyetherimide sulfone resin having an excess of anhydride end groups compared to amine end groups; - and
combining said polyetherimide sulfone resin with a phosphorus containing stabilizer. - View Dependent Claims (19)
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20. A composition comprising a phosphorus containing stabilizer and a polyetherimide sulfone resin having greater than or equal to 50 mole % of units derived from oxydiphthalic anhydride, wherein the polyetherimide sulfone has an amount of anhydride end groups in excess of the amount of amine end groups.
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21. A composition comprising a phosphorus containing stabilizer and a polyetherimide sulfone resin having greater than or equal to 50 mole % of units derived from oxydiphthalic anhydride and a diamino aryl sulfone, wherein the polyetherimide sulfone has an amount of anhydride end groups in excess of the amount of amine end groups.
Specification