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Polyetherimide Sulfone Resins

IP.com Disclosure Number: IPCOM000124462D
Publication Date: 2005-Apr-21
Document File: 2 page(s) / 24K

Publishing Venue

The IP.com Prior Art Database

Abstract

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 resin made by GE Plastics is an example of such a resin. It is made by polymerization of bisphenol A Dianhydride (BPA-DA) with meta-phenylene diamine (mPD). In a similar fashion, as broadly disclosed in US patents 3,847,867, 4,564,858 & 5,534,602, BPA-DA can be polymerized with diamino diphenylsulfone (DDS) to make a 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.

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                                                                                                                                                                                    April 18, 2005

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 resin made by GE Plastics is an example of such a resin. It is made by polymerization of bisphenol A Dianhydride (BPA-DA) with meta-phenylene diamine (mPD).

In a similar fashion, as broadly disclosed in US patents 3,847,867, 4,564,858 & 5,534,602, BPA-DA can be polymerized with diamino diphenylsulfone (DDS) to make a 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 (but are not limited to) 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 polyether imide sulfone resin may also be formed into articles

using solutions or powders. This maybe useful 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 transportation devices, engine components, gears, pulleys, filters, housings, handles and etc.  

The polyetherimide sulfone resin may also be used to making lighting devices: reflectors, bezels, brackets, bulb holders, sockets, lenses, automotive headlamps, projector lamps, fog lamps and etc.

Reflectors as described in US 4,210,841, which can be coated with a number of reflective metals, are especially useful applications for this resin.

Fluid Handling devices, pipes, tubes...