Functional phenylene ether oligomer and curable and thermoset compositions prepared therefrom

A functional phenylene ether oligomer of the structure

• wherein
• Q1 and Q2 are each independently halogen, unsubstituted or substituted C1-12 primary or secondary hydrocarbyl, C1-12 hydrocarbylthio, C1-12 hydrocarbyloxy, or C2-12 halohydrocarbyloxy wherein at least two carbon atoms separate the halogen and oxygen atoms;
• Q3 and Q4 are each independently hydrogen, halogen, unsubstituted or substituted C1-12 primary or secondary hydrocarbyl, C1-12 hydrocarbylthio, C1-12 hydrocarbyloxy, or C2-12 halohydrocarbyloxy wherein at least two carbon atoms separate the halogen and oxygen atoms;
• Q5, Q6 and Q7 are each independently halogen, unsubstituted or substituted C1-12 primary or secondary hydrocarbyl, C1-12 hydrocarbylthio, C1-12 hydrocarbyloxy, or C2-12 halohydrocarbyloxy wherein at least two carbon atoms separate the halogen and oxygen atoms, preferably wherein Q5, Q6 and Q7 are each methyl;
• x and y are each independently 0-30, provided that the sum of x and y is at least 2;
• and
• R is independently at each occurrence a group containing unsaturation, an epoxy, a benzoxazine, an isocyanate, a cyanate ester, a melamine, a cyanophenyl, a maleimide, a phthalonitrile, a cycloalkylphenyl, an ethoxylate, a urethane, an anhydride, or an allylhydroxypropyl.