Polyaryl ether ketone polymer blends
View Patent ↗Phase separated blends of polyaryl ether ketones, polyaryl ketones, polyether ketones, polyether ether ketones and mixtures thereof with at least one polysulfone etherimide, wherein the polysulfone etherimide has greater than or equal to 50 mole % of the polymer linkages contain at least one aryl sulfone group are described. Such blends have improved load bearing capability at high temperature. In another aspect a high crystallization temperature, especially at fast cooling rates, is achieved.
1. A binary phase separated polymer blend comprising a mixture of:
a) a first resin component comprising one or more polyaryl ether ketones; with,
b) a second resin component comprising one or more polysulfone etherimides having greater than or equal to 50 mole% of the polymer linkages containing at least one aryl sulfone group and comprising the reaction product of a dianhydride monomer and a diamine monomer and:
1) the dianhydride monomer is selected from the group consisting of oxydiphthalic anhydrides, bisphenol A dianhydride (BPADA), disulfone dianhydride, bis (carbophenoxy phenyl) hexafluoro propane dianhydride, pyromellitic dianhydride (PMDA), biphenyl dianhydride, sulfur dianhydrides, and mixtures thereof and,
2) the diamine monomer selected from the group consisting of diamino diphenyl sulfone (DDS), m-phenylene diamine (mPD), p-phenylene diamine (pPD),4,4′-oxydianiline (ODA), 1,3-bis(4-aminophenoxy benzene) and bis(aminophenoxy phenyl) sulfones (BAPS);
wherein the ratio of the first component to the second component, in parts by weight is from 99:1 to 60:40.
2. The composition of claim 1 wherein the polysulfone etherimide contains aryl sulfone and aryl ether linkages such that at least 50 mole % of the repeat units of the polysulfone etherimide contain at least one aryl ether linkage, at least one aryl sulfone linkage and at least two aryl imide linkages.
3. The composition of claim 1 wherein at least 50 mole % of the polysulfone etherimide linkages are derived from oxydiphthalic anhydride and bisphenol A dianhydride (BPADA).
4. The composition of claim 1 wherein the second resin component comprises a polymer comprising the reaction product of a dianhydride monomer and a diamine monomer and: 1) the dianhydride monomer is 4,4′ oxydiphthalic anhydride(ODPA); and, 2) the diamine monomer is selected from the group consisting of diamino diphenyl sulfone (DDS) and bis(aminophenoxy phenyl) sulfones (BAPS).
5. The composition of claim 1 having a heat distortion temperature (HDT) of greater than or equal to 170° C., measured as per ASTM method D648 at 66 psi (0.46 MPa) on a 3.2 mm sample.
6. The composition of claim 1 wherein the ratio of the first component to the second component, in parts by weight is from 85:15 to 75:25.
7. The composition of claim 1 with less than 5 wt % fibrous reinforcement.
8. The composition of claim 1 having a modulus of greater than about 200 MPa at 200° C., as measured by ASTM D5418, on a 3.2 mm sample.
9. The composition of claim 1 wherein the polysulfone etherimide is essentially free of benzylic protons.
10. The composition of claim 1 wherein the polyaryl ether ketones have a crystalline melting point from 300 to 420° C.
11. The composition of claim 1 wherein the polysulfone etherimide has a glass transition temperature (Tg), from 240 to 350° C.
12. The composition of claim 1 having at least two glass transition temperatures, as measured by ASTM method D5418, wherein the first glass transition temperature is from 120-200° C. and the second glass transition temperature is from 240-350° C.
13. The composition of claim 12 wherein the second glass transition temperature is from about 280 to about 350° C.
14. The composition of claim 1 wherein the crystallization temperature, as measured from a molten polymer mixture cooled at a rate of 80° C/min., is greater than or equal to about 250° C.
15. The composition according to claim 1 wherein one or more properties of the polymer blend is higher than the corresponding property of resin component one and resin component two.
16. An article made from the composition of claim 1 .
17. The article of claim 16 , which is selected from the group consisting of: sheets, films, multilayer sheets, multilayer films, molded parts, extruded profiles, fibers, coated parts, tubing, composites, and foams.
18. The composition of claim 1 wherein less than 30 mole % of the polysulfone etherimide linkages contain isoalkylidene groups.
19. The composition of claim 18 wherein less than 20 mole % of the polysulfone etherimide linkages contain isoalkylidene groups.
20. The composition of claim 18 wherein less than 10 mole % of the polysulfone etherimide linkages contain isoalkylidene groups.