초록 ▼

Polysulfone and polyethersulfone oligomers are made by the condensation of phenols and halogenated moieties and exhibit improved solvent resistance when capped with crosslinkable end cap imidophenols. Composites made with a blend of the oligomers and corresponding polymers formed from the phenols an

Polysulfone and polyethersulfone oligomers are made by the condensation of phenols and halogenated moieties and exhibit improved solvent resistance when capped with crosslinkable end cap imidophenols. Composites made with a blend of the oligomers and corresponding polymers formed from the phenols and halogenated moieties, but without end caps, exhibit superior impact resistance while retaining the desired solvent resistance. Conductive or semiconductive oligomers (or their composites) can be formed by doping suitable oligomers, especially those prepared from Schiff base diols.

대표청구항 ▼

A method for preparing an oligomer, by condensing 2 moles of an end cap imidophenol; n+1 moles of a dihalogen moiety; and n moles of a diol, wherein the imidophenol is selected from the group consisting of: [Figure] [Figure] [Figure] [Figure] [Figure] wherein R1=lower alkyl, lower alkoxy, aryl, aryl

A method for preparing an oligomer, by condensing 2 moles of an end cap imidophenol; n+1 moles of a dihalogen moiety; and n moles of a diol, wherein the imidophenol is selected from the group consisting of: [Figure] [Figure] [Figure] [Figure] [Figure] wherein R1=lower alkyl, lower alkoxy, aryl, aryloxy, substituted aryl, halogen, or mixtures thereof; j=0, 1, or 2; i=1 or 2; G=－CH2－, －O－, －S－, or －SO2－; and k=1 or 2; wherein the dihalogen moiety is selected from the group consisting of: [Figure] [Figure] [Figure] [Figure] [Figure] [Figure] [Figure] wherein X=halogen; and q=－S－, －SO2－, －CO－, －(CH3)2C－, and －(CF3)2C－; wherein the diol is selected from the group consisting of: hydroquinone; bisphenol A; p, p′－biphenol; 4, 4′－dihydroxydiphenylsulfide; 4, 4′－dihydroxydiphenylether; 4, 4′－dihydroxydiphenylisopropane; 4, 4′－dihydroxydiphenylhexafluoropropane; HO－Ar－OH; HO－Ar－L－Ar′－L－Ar－OH; and HO－Ar′－L－Ar－L－Ar′－OH; wherein L=－CH2－, －(CH3)2C－, －(CF3)2C－, －O－, －S－, －SO2－, or －CO－; [Figure] [Figure] [Figure] [Figure] wherein n=an integer such that the oligomer has a formula wherein between about 1,000 and 40,000. A conductive or semiconductive oligomer, comprising: (a) the product of the process of condensing; 2 moles of an end cap imidophenol; n+1 moles of a dihalogen moiety; and n moles of a diol, wherein the imidophenol is selected from the group consisting of: [Figure] [Figure] [Figure] [Figure] [Figure] wherein R1=lower alkyl, lower alkoxy, aryl, aryloxy, substituted aryl, halogen, or mixtures thereof; j=0, 1, or 2; i=1 or 2; G=－CH2－, －O－, －S－, or －SO2－; and k=1 or 2; wherein the dihalogen moiety is selected from the group consisting of: [Figure] [Figure] [Figure] [Figure] [Figure] [Figure] wherein X=halogen, preferably chlorine; and q=－S－, －SO2－, －CO－, －(CH3)2C－, and －(CF3)2C－; and and wherein the diol is selected from the group consisting of: [Figure] [Figure] [Figure] [Figure] [Figure] wherein R is selected from the group consisting of: phenyl; biphenyl; naphthyl; or a compound of the general formula: [Figure] wherein W=－CH2－or －SO2－; and q=a small integer; wherein n=an integer such that the oligomer has a formula weight between about 1,000 and 40,000; the reaction occurring under an inert atmosphere in the presence of excess base; and (b) a suitable amount of a suitable dopant.