# US 2014/0194579 A1 · Blends of polyethersulfones and polyphenylene sulfide resins

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- Number: US 2014/0194579 A1
- Document ID: US20140194579A1
- Status: Published application
- Kind: A1
- Application number: 13/791,714
- Filed: 2013-03-08
- Published: 2014-07-10
- Earliest claimed: 2013-01-04
- Assignees: Sabic Innovative Plasticsip B.V.
- Applicants: Sabic Innovative Plasticsip B.V.
- Inventors: Hariharan Ramalingam; Kapil Sheth
- Web page: https://patentgrep.com/patent/US20140194579A1

## CPC

- C08L 81/04: Polysulfides
- C08G 73/1046: {Polyimides containing oxygen in the form of ether bonds in the main chain}
- C08J 3/005: {Processes for mixing polymers}
- C08L 63/00: Compositions of epoxy resins; Compositions of derivatives of epoxy resins
- C08L 81/02: Polythioethers; Polythioether-ethers
- C08L 81/06: Polysulfones; Polyethersulfones
- C08L 101/00: Compositions of unspecified macromolecular compounds
- C09D 181/06: Polysulfones; Polyethersulfones
- H01B 3/306: {Polyimides or polyesterimides}
- H01B 3/307: {Other macromolecular compounds}
- H01B 3/40: epoxy resins
- C08J 2381/04: Polysulfides
- C08J 2381/06: Polysulfones; Polyethersulfones
- C08J 2463/04: Epoxynovolacs
- C08J 2479/08: Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
- C08L 79/08: Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)
- C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08J: WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H (working, e.g. shaping, of plastics B29)
- C09D: COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D)
- H01B: CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES (selection for magnetic properties H01F1/00; waveguides H01P {; printed circuits H05K})

## Abstract

A composition including a blend of: a) a polyethersulfone; b) a polyphenylene sulfide (PPS); and c) an epoxy, and optionally a polyetherimide, wherein the polyetherimide and epoxy are present in an amount effective to act as a compatibilizer for the polyethersulfone and polyphenylene sulfide (PPS). Methods of compatibilizing a blend of polyethersulfone and polyphenylene sulfide (PPS). The method can include melt mixing a polyethersulfone, and polyetherimide, a polyphenylene sulfide (PPS) and an epoxy under conditions of elevated temperature and simultaneous mixing.

## Claims

### Claim 1

A composition comprising a blend of:
a) a polyethersulfone;
b) a polyphenylene sulfide (PPS); and,
c) an epoxy, and optionally a polyetherimide, wherein the polyetherimide and epoxy are present in an amount effective to act as a compatibilizer for the polyethersulfone and polyphenylene sulfide (PPS).

### Claim 2 (depends on 1)

The composition of claim 1, wherein the composition possesses a tensile strength greater than 75 MPa, an impact strength of at least 65 J/m, and an elongation at break of at least 116%.

### Claim 3 (depends on 1)

The composition of claim 1, wherein the epoxy is an epoxy cresol novolac resin.

### Claim 4 (depends on 1)

The composition of claim 1, wherein the polyphenylene sulfide (PPS) is a linear poly(phenylene) sulfide.

### Claim 5 (depends on 1)

The composition of claim 1, wherein the morphology of the composition is fine, well-dispersed domains of polyethersulfone and polyphenylene sulfide (PPS).

### Claim 6 (depends on 1)

The composition of claim 1, wherein the polyetherimide is present in the range of 0-30 wt %, and the epoxy is in the range of 0.5-1.5 wt %.

### Claim 7 (depends on 1)

The composition of claim 1, wherein the composition exhibits a heat deflection temperature (HDT) of at least 165° C.

### Claim 8 (depends on 1)

The composition of claim 1, wherein the polyethersulfone is present in the range of 49.5-74.5 wt % and the polyphenylene sulfide (PPS) is present in the range of 24.5-74.5 wt %.

### Claim 9 (depends on 1)

An extrudate comprising the composition of claim 1.

### Claim 10 (depends on 1)

A molded product comprising the composition of claim 1.

### Claim 11

A method of compatibilizing a blend of polyethersulfone and polyphenylene sulfide (PPS) comprising:
melt mixing a polyethersulfone, a polyetherimide, a polyphenylene sulfide (PPS) and an epoxy under conditions of elevated temperature and simultaneous mixing.

### Claim 12 (depends on 11)

The method of claim 11, wherein the simultaneous mixing is performed in a single pass in a vented extruder.

### Claim 13 (depends on 12)

The method of claim 12, wherein the extruder is a twin screw extruder.

### Claim 14 (depends on 14)

The method of claim 14, wherein the elevated temperature is in the range of 300 to 350° C.

### Claim 15 (depends on 11)

The method of claim 11, wherein the screws were run at a rotation of about 250 rotations per minute (rpm) under vacuum.

### Claim 16 (depends on 11)

The method of claim 11, wherein the compatibilized blend is extruded.

### Claim 17 (depends on 16)

The method of claim 16, wherein the extruded blend is cooled, pelletized and dried at 150° C.

### Claim 18 (depends on 17)

The method of claim 17, further comprising injection molding a melt from the pellets at a temperature of 340-350° C.

### Claim 19 (depends on 18)

The method of claim 18, wherein the temperature of the injection mold is in the range of 80-150° C.

### Claim 20 (depends on 19)

An injection molded product formed by the process of claim 19.