Blends of polyetherimide sulfone and poly(arylene sulfide)
View Patent ↗Disclosed herein is a composition comprising a compatible blend of i) 60 to 85 weight percent of a linear poly(arylene sulfide), ii) 15 to 40 weight percent of a polyetherimide sulfone; and iii) 1 to 3 weight percent of a novolac resin having an average of 2 or more epoxy groups per molecule. Weight percent is based on the total weight of the composition. An article made from the composition has a tensile strength greater than or equal to 70 megaPascals (MPa), as determined by ASTM D638, an impact strength of greater than or equal to 3 kiloJoules per square meter (kJ/m 2 ), as determined by ASTM D256, and an elongation at break greater than or equal to 3 % as determined by ASTM D638. Methods of making the composition are also disclosed.
1. A composition comprising a compatible blend of i) 65 to 75 weight percent of a linear poly (phenylene sulfide), ii) 20 to 35 weight percent of a polyetherimide sulfone comprising structural units having the formula
or a combination thereof; and iii) 1 to 3 weight percent of a novolac resin having an average of 2 or more epoxy groups per molecule, wherein weight percent is based on the total weight of the composition, and an article made from the composition has a tensile strength greater than or equal to 70 megaPascals (MPa), as determined by ASTM D638, an impact strength of greater than or equal to 3 kiloJoules per square meter (kJ/m 2 ), as determined by ASTM D256, and an elongation at break greater than or equal to 3% as determined by ASTM D638.
2. The composition of claim 1 , wherein the novolac resin has an average of 6 or more epoxy groups per molecule.
3. The composition of claim 1 , wherein the novolac resin has an average of 20 or more epoxy groups per molecule.
4. The composition of claim 1 , further comprising a reinforcing filler.
5. The composition of claim 4 wherein the reinforcing filler comprises glass beads, glass flake, milled glass, glass fibers, or combinations thereof.
6. A composition comprising the reaction product of melt blending i) 65 to 75 weight percent of a linear poly (phenylene sulfide), ii) 20 to 35 weight percent of a polyetherimide sulfone comprising structural units having the formula
or a combination thereof; and iii) 1 to 3 weight percent of a novolac resin having an average of 2 or more epoxy groups per molecule, wherein weight percent is based on the total weight of the composition, wherein an article made from the composition has a tensile strength greater than or equal to 70 megaPascals (MPa), as determined by ASTM D638, an impact strength of greater than or equal to 3 kiloJoules per square meter (kJ/m 2 ), as determined by ASTM D256, and an elongation at break greater than or equal to 3% as determined by ASTM D638.
7. The composition of claim 6 , wherein the novolac resin has an average of 6 or more epoxy groups per molecule.
8. The composition of claim 7 , wherein the novolac resin has an average of 20 or more epoxy groups per molecule.
9. The composition of claim 6 , wherein the composition comprises 20 to 35 weight percent of the polyetherimide sulfone, based on the total weight of the composition.
10. The composition of claim 1 , wherein the polyetherimide sulfone is derived from dianhydrides comprising a combination of bisphenol-A dianhydride and oxydiphthalio anhydride, and a diamino diphenyl sulfone.
11. The composition of claim 6 , wherein the poiyetherimide sulfone is derived from dianhydrides comprising a combination of bisphenol-A dianhydride and oxydiphthalic anhydride, and a diamino diphenyl sulfone.