POLYETHERIMIDE/POLYPHENYLENE ETHER SULFONE BLENDS

• US 20090018242A1
• Filed: 07/12/2007
• Published: 01/15/2009
• Est. Priority Date: 07/12/2007
• Status: Abandoned Application

• Current Assignee: Sabic Innovative Plastics IP BV (Government of Saudi Arabia)
• Original Assignee: Sabic Innovative Plastics IP BV (Government of Saudi Arabia)
• Inventors: Sanner, Mark Alan, Kailasam, Ganesh, Gallucci, Robert R.
• Application Number:
  US11/776,658
• Publication Number:
  US 20090018242A1
• Time in Patent Office: Days
• US Class Current: 524/139
• CPC Class Codes: C08F 283/04 on to polycarbonamides, polyesteramides or polyimides C08F283/004 takes precedence
• CPC Class Codes: C08G 75/23 Polyethersulfones
• CPC Class Codes: C08G 75/30 Polysulfonamides; Polysulfonimides
• CPC Class Codes: C08K 5/09 Carboxylic acids; Metal salts thereof; Anhydrides thereof
• CPC Class Codes: C08K 5/20 Carboxylic acid amides
• CPC Class Codes: C08L 2205/05 containing polymer components which can react with one another
• CPC Class Codes: C08L 2666/02 Organic macromolecular compounds, natural resins, waxes or and bituminous materials
• CPC Class Codes: C08L 2666/14 Macromolecular compounds according to C08L59/00 - C08L87/00; Derivatives thereof
• CPC Class Codes: C08L 53/00 Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
• CPC Class Codes: C08L 79/08 Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
• CPC Class Codes: C08L 81/00 Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing sulfur with or without nitrogen, oxygen or carbon only; Compositions of polysulfones; Compositions of derivatives of such polymers
• CPC Class Codes: C08L 81/06 Polysulfones; Polyethersulfones
• CPC Class Codes: C08L 81/10 Polysulfonamides; Polysulfonimides

Abstract

Compositions comprise phase separated polyetherimide/polyphenylene ether sulfone blends. The dispersed phase has an average cross sectional size of 0.1 to 10 micrometers. The composition retains has good hydrolytic stability and is capable of withstanding steam autoclaving at temperatures of 130 to 138° C.

Claims

1. A composition comprising a phase separated blend comprising:

to 90 weight percent of a polyetherimide; and

to 75 weight percent of a polyphenylene ether sulfone;

wherein the phase separated blend comprises a phase having an average cross-section of 0.01 to 10 micrometers;

wherein the composition initially exhibits a multiaxial impact energy of greater than or equal to 45 ft-lbs (61 Joules) and after 300 hours steam autoclave exposure at 130 to 138°

C. has a multiaxial impact energy of greater than or equal to 20 ft-lbs (27 Joules) and multiaxial impact energy is determined according to ASTM D3763 at 23°

C.;

wherein the composition has a tensile modulus of greater than or equal to 425,000 psi (2930 MPa) as determined by ASTM D638;

wherein the composition has a heat distortion temperature at 264 psi (1.8 MPa) of greater than or equal to 150°

C. as determined by ASTM D648 on a 3.2 millimeter thick sample; and

wherein weight percent is based on the combined weight of polyetherimide and polyphenylene ether sulfone.

2. The composition of claim 1 wherein the composition has a melt volume rate, as measured by ASTM D1238, of 1.0 to 25.0 cm³/10 minutes at 337°

C.

3. The composition of claim 1, wherein the polyetherimide and the polyphenylene ether sulfone each have a weight average molecular weight (Mw) of 20,000 to 70,000 grams/mole and wherein the difference in molecular weight between the two polymers is less than 20% of the higher of the molecular weights.

4. The composition of claim 1, wherein the polyetherimide and the polyphenylene ether sulfone each have a refractive index of 1.620 to 1.670 as determined by ASTM D542.

5. The composition of claim 1, wherein the composition has a percent transmission at 3.2 millimeters, as measured by ASTM method D1003, of greater than or equal to 50%.

6. The composition of claim 1, wherein the composition further comprises 0.01 to 5.0 weight percent, based on the total weight of the composition, of a mold release agent selected from the group consisting of C₁₅ to C₃₀ carboxylic acids, C₁₅ to C₃₀ aliphatic carboxylic amides and mixtures thereof.

7. The composition of claim 1, wherein the polyphenylene ether sulfone has greater than or equal to 50 mole % of its main chain sulfone linkages derived from biphenol.

8. The composition of claim 1, wherein the polyetherimide has a glass transition temperature of 200 to 280°

C. and the polyphenylene ether sulfone has glass transition temperature of 200 to 250°

C.

9. The composition of claim 1, wherein the polyetherimide is a polyetherimide sulfone.

10. The composition of claim 1, wherein the composition further comprises from 1 to 30 weight percent, based on the total weight of the composition, of at least a member selected from the group consisting of silicone polyetherimide, polyamides, polyphenylene ethers, polyolefins, polysulfones, polyethersulfones, and combinations thereof.

11. The composition of claim 1, wherein the composition has a residual volatile species concentration of less than 300 ppm.

12. The composition of claim 1, wherein the composition further comprises a phosphorus containing stabilizer having a molecular weight of greater than or equal to 500 grams/mole.

13. The composition of claim 1, wherein the polyetherimide and the polyphenylene ether sulfone have less than 1 mole % benzylic protons.

14. The composition of claim 1, wherein the polyphenylene ether sulfone has the following structure:

15. The composition of claim 1, wherein the polyphenylene ether sulfone is a copolymer of the following structure:

16. The composition of claim 1, wherein the polyphenylene ether sulfone comprises a mixture selected from the group consisting of homopolymers, copolymers, and combinations thereof.

17. An article derived from a composition comprising a phase separated blend comprising:

to 90 weight percent of a polyetherimide; and

to 75 weight percent of a polyphenylene ether sulfone;

wherein the phase separated blend comprises a phase having an average cross-section of 0.01 to 10 micrometers;

wherein the composition initially exhibits a multiaxial impact energy of greater than or equal to 45 ft-lbs (61 J) and after 300 hours steam autoclave exposure at 130 to 138°

C. has a multiaxial impact energy of greater than or equal to 20 ft-lbs (27 J) and multiaxial impact energy is determined according to ASTM D3763 at 23°

C.;

wherein the composition has a tensile modulus of greater than or equal to 425,000 psi (2930 MPa) as determined by ASTM D638;

wherein the composition has a heat distortion temperature at 264 psi (1.8 MPa) of greater than or equal to 150°

C. as determined by ASTM D648 on a 3.2 millimeter thick sample; and

wherein weight percent is based on the combined weight of polyetherimide and polyphenylene ether sulfone.

18. The article of claim 17, wherein the composition has a heat distortion temperature (HDT) at 264 psi (1.8 MPa) of greater than or equal to 175°

C., and the polyetherimide and the polyphenylene ether sulfone each have a weight average molecular weight (Mw) of 20,000 to 70,000 and wherein the difference in molecular weight between the two polymers is less than 20% of the higher of the molecular weights.

19. A composition comprising a phase separated blend comprising:

60 to 80 weight percent of a polyetherimide; and

to 40 weight percent of a polyphenylene ether sulfone;

wherein the phase separated blend comprises a phase having an average cross-section of 0.01 to 10 micrometers;

wherein the composition initially exhibits a multiaxial impact energy of greater than or equal to 45 ft-lbs (61 J) and after 300 hours steam autoclave exposure at 130 to 138°

C. has a multiaxial impact energy of greater than or equal to 20 ft-lbs (27 J) and multiaxial impact energy is determined according to ASTM D3763 at 23°

C.;

wherein the composition has a tensile modulus of greater than or equal to 425,000 psi (2930 MPa) as determined by ASTM D638;

wherein the composition has a heat distortion temperature at 264 psi (1.8 MPa) of greater than or equal to 175°

C. as determined by ASTM D648 on a 3.2 millimeter thick sample;

wherein weight percent is based on the combined weight of polyetherimide and polyphenylene ether sulfone.

20. A composition comprising a phase separated blend comprising:

60 to 80 weight percent of a polyetherimide; and

20 to 40 weight percent of a polyphenylene ether sulfone;

wherein the phase separated blend comprises a phase having an average cross-section of 0.01 to 10 micrometers;

wherein the composition initially exhibits a multiaxial impact energy of greater than or equal to 45 ft-lbs (61 J) and after 300 hours steam autoclave exposure at 130 to 138°

C. has a multiaxial impact energy of greater than or equal to 20 ft-lbs (27 J) and multiaxial impact energy is determined according to ASTM D3763 at 23°

C.;

wherein the composition has a tensile modulus of greater than or equal to 425,000 psi (2930 MPa) as determined by ASTM D638;

wherein the composition has a heat distortion temperature at 264 psi (1.8 MPa) of greater than or equal to 175°

C. as determined by ASTM D648 on a 3.2 millimeter thick sample;

and a percent transmission at 3.2 millimeters, as measured by ASTM method D1003, of greater than or equal to 50%,

wherein weight percent is based on the combined weight of polyetherimide and polyphenylene ether sulfone.

21. A composition comprising a phase separated blend comprising:

60 to 80 weight percent of a polyetherimide; and

to 40 weight percent of a polyphenylene ether sulfone of the following structure;

22. A composition comprising a phase separated blend comprising:

60 to 80 weight percent of a polyetherimide; and

to 40 weight percent of a polyphenylene ether sulfone of the following structure;