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US 8,034,857 B2Granted
Polyetherimide/polyphenylene ether sulfone blends
AssigneeSabic Innovative Plastics IP B.V.
InventorsGanesh Kailasam, Robert R Gallucci, Mark Alan Sanner
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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.
Claims71
A composition comprising a phase separated blend comprising:
- 50 to 80 weight percent of a polyetherimide;
- and
- 20 to 50 weight percent of a polyphenylene ether sulfone;
- wherein the phase separated blend comprises a dispersed phase having an average cross-section of 0.01 to 10 micrometers;
- wherein the composition initially has 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), wherein 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 according to 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 according to 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.
6 more elements
An article derived from a composition comprising a phase separated blend comprising:
- 50 to 80 weight percent of a polyetherimide;
- and
- 20 to 50 weight percent of a polyphenylene ether sulfone;
- wherein the phase separated blend comprises a dispersed phase having an average cross-section of 0.01 to 10 micrometers;
- wherein the composition initially has a multiaxial impact energy of greater than or equals 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), wherein 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 according to 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 according to ASTM D648 on a 3.2 millimeter thick molded sample;
- wherein weight percent is based on the combined weight of polyetherimide and polyphenylene ether sulfone;
- wherein the composition has a heat distortion temperature (HDT) at 264 psi (1.8 MPa) of greater than or equal to 175° C., and
- 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.
7 more elements
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 dispersed phase having an average cross-section of 0.01 to 10 micrometers;
- wherein the composition initially has 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) wherein 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 according to 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 according to ASTM D648 on a 3.2 millimeter molded thick sample;
- wherein weight percent is based on the combined weight of polyetherimide and polyphenylene ether sulfone.
5 more elements
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 dispersed phase having an average cross-section of 0.01 to 10 micrometers;
- wherein the composition initially has 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), wherein 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 according to 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 according to ASTM D648 on a 3.2 millimeter thick sample;
- and a percent transmission at 3.2 millimeters of greater than or equal to 50% as determined according to ASTM method D1003,
- wherein weight percent is based on the combined weight of polyetherimide and polyphenylene ether sulfone.
6 more elements
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 of the comprising repeating units of formula;
- wherein n equals 25 to 1000, R is hydrogen, alkyl, aryl, alkyl aryl, alkoxy, halogen or combination thereof, and x equals 0 to 4;
- and wherein the aryl sulfone linkages are selected from the group consisting of 4,4′ linkages, 3,3′ linkages, 3,4′ linkages, and combinations thereof,
- wherein the phase separated blend comprises a dispersed phase having an average cross-section of 0.01 to 10 micrometers;
- wherein the polyetherimide and the polyphenylene ether sulfone each have a weight average molecular weight (Mw) from 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;
- wherein the composition initially has 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 135° C. has a multiaxial impact energy of greater than or equal to 20 ft-lbs (27 J), wherein 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 according to 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 according to ASTM D648 on a 3.2 millimeter thick sample;
- wherein weight percent is based on the combined weight of polyetherimide and polyphenylene ether sulfone.
8 more elements
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 comprising repeating units of the following formula;
- wherein n>m and n+m equals 25 to 100,
- wherein the phase separated blend comprises a phase having an average cross-section of 0.01 to 10 micrometers;
- wherein the composition initially has 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), wherein 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 according to 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 according to ASTM D648 on a 3.2 millimeter molded thick sample;
- wherein weight percent is based on the combined weight of polyetherimide and polyphenylene ether sulfone.
6 more elements
Dependencies are inferred from the claim text.