Stabilization of polyetherimide sulfones
AssigneeSabic Innovative Plastics IP B.V.
InventorsRobert R. Gallucci, Jon M. Malinoski
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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.
Claims21
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.
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.
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.
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.
Dependencies are inferred from the claim text.