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Polyetherimide Sulfone Resins

IP.com Disclosure Number: IPCOM000009849D
Publication Date: 2002-Sep-23
Document File: 2 page(s) / 25K

Publishing Venue

The IP.com Prior Art Database

Abstract

Polyetherimide sulfone resins can be prepared through the polymerization of dianhydrides, e.g., BPA-DA, with diamino substitutes materials, e.g., diamino diphenylsulfone (DDS) to make a polyetherimide sulfone polymer suitable for forming into a variety of articles. Articles made from these resins generally exhibit high strength, high heat resistance, transparency, solvent resistance, ignition and flame resistance. These resins are also typically good electrical insulators. Article forming methods include, e.g., injection molding, compression molding, thermoforming, extrusion into profiles, tubes, rods and films of various dimensions. The resins can be used to make fibers and filaments as well as coatings. The most preferred forming methods involve processing of molten polymer. The polyetherimide sulfone resin may also be formed into articles using solutions or powders. They may be used to form coatings and films by removal of solvent or fusing of powder.

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Polyetherimide Sulfone Resins

Polyetherimide resins have been made by polymerization of aryl diamines with di-phthalic anhydrides made via reaction of substituted phthalic anhydrides with bisphenols. Ultem® polyetherimide resins made by GE Plastics are examples of such resins. They can be made by polymerization of Bisphenol A Dianhydride (BPA-DA) with phenylene diamines, e.g., meta-phenylene diamine (mPD) using methods well known in the art.

In a similar fashion, as broadly disclosed in US Patents 3,847,867, 4,564,858 and 5,534,602, BPA-DA can be polymerized using diamino diphenylsulfone (DDS) to make a polyetherimide sulfone polymer suitable for forming into a variety of articles.� The polymer provides articles made from it with high strength, high heat resistance, transparency, solvent resistance, ignition and flame resistance. The resin is also a good electrical insulator.

Forming methods include, e.g., injection molding, compression molding, thermoforming, extrusion into profiles, tubes, rods and films of various dimensions. The resins can be used to make fibers and filaments as well as coatings. The most preferred forming methods involve processing of molten polymer. The polyetherimide sulfone resin may also be formed into articles using solutions or powders. They may be used to form coatings and films by removal of solvent or fusing of powder.

A variety of useful articles can be fashioned from these resins such as:

Parts for communication equipment: telephones, televisions, speakers, switching equipment, filters. Parts for electronic equipment: switches, fuses, insulating materials, circuit boards, bobbins, computers, disc drives, printers, ink cartridges, copiers. Components of electromechanical system can also be made from this polymer.

Articles can also be parts for transportatio...