Oligomeric hydroxy arylether phthalonitiles and synthesis...

Details Oligomeric hydroxy arylether phthalonitiles and synthesis... Oligomeric hydroxy arylether phthalonitiles and synthesis...

2005-05-10

2005-05-10

Truong, Duc (Department: 1711)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

C528S154000, C528S205000, C528S219000, C528S397000, C528S485000, C528S486000, C528S488000

Reexamination Certificate

active

06891014

ABSTRACT:
An aromatic ether oligomer or polyaromatic ether comprising the formula:wherein Ar is an independently selected divalent aromatic radical; formed by reacting a dihydroxyaromatic with a dihaloaromatic; and wherein the reaction is performed in the presence of a copper compound and cesium carbonate. The polyaromatic ether is formed when neither the dihydroxyaromatic nor the dihaloaromatic is present in an excess amount. The aromatic ether oligomer is formed by using an excess of either dihydroxyaromatic or dihaloaromatic. A phthalonitrile monomer comprising the formula:formed by reacting a 3- or 4-nitrophthalonitrile with a hydroxy-terminated aromatic ether oligomer. A thermoset formed by curing the phthalonitrile monomer. Processes for forming all the above.

REFERENCES:
patent: 6756470 (2004-06-01), Keller et al.

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