Curable thermosetting composition including poly(arylene ether) copolymer

A curable thermosetting composition comprising a capped poly(arylene ether) copolymer comprising a reactive end group, wherein the capped poly(arylene ether) copolymer is derived from an alkyl, aryl-phenol;

• wherein the capped poly(arylene ether) copolymer is of formula (1) or formula (2):
• wherein
• each of Rx and Ry is independently a reactive end group comprising a (meth)acrylate, a (meth)acrylonitrile, a vinyl benzene, an allyl, an epoxide comprising a glycidyl ether, a cyanate ester, an amine, maleimide, a carboxylic acid, a carboxylic acid alkyl ester, or a combination thereof,
• each occurrence of Q1a and Q1b independently is halogen, C1-12 hydrocarbyl provided that the hydrocarbyl group is not tertiary hydrocarbyl, C1-12 hydrocarbylthio, C1-12 hydrocarbyloxy, or C2-12 halohydrocarbyloxy wherein at least two carbon atoms separate the halogen and oxygen atoms;
• each occurrence of Q2 is independently hydrogen, halogen, unsubstituted or substituted C1-12 hydrocarbyl provided that the hydrocarbyl group is not tertiary hydrocarbyl, C1-12 hydrocarbylthio, C1-12 hydrocarbyloxy, or C2-12 halohydrocarbyloxy wherein at least two carbon atoms separate the halogen and oxygen atoms;
• each occurrence of R1, R2, R3, and R4 is independently hydrogen, halogen, C1-12 hydrocarbyl provided that the hydrocarbyl group is not tertiary hydrocarbyl, C1-12 hydrocarbylthio, C1-12 hydrocarbyloxy, or C2-12 halohydrocarbyloxy wherein at least two carbon atoms separate the halogen and oxygen atoms;
• x and y represent the relative mole ratios of the arylene ether units wherein x and y are each independently 0 to 50, or 0 to 30, provided that the sum of x and y is at least 2;
• or e is the number of moles of the arylene ether unit;
• each occurrence of R5a is independently Q1a or a (C1-6-hydrocarbyl)(C1-6-hydrocarbyl)aminomethylene group;
• each occurrence of R5b is independently Q1b or a (C1-6-hydrocarbyl)(C1-6-hydrocarbyl)aminomethylene group;
• provided that the capped poly(arylene ether) copolymer comprises:
• at least one repeating unit wherein Q1a is a C1-12 primary or secondary alkyl, and Q1b is unsubstituted C6-12 aryl,
• at least one terminal unit where R5a is a C1-12 primary or secondary alkyl, and R5b is unsubstituted C6-12 aryl, or
• a combination thereof;
• Y1 is a divalent linking group of any one or more of formulas
• wherein
• each occurrence of Ra, Rb, and Re is independently hydrogen, C1-12 hydrocarbyl, or C1-6 hydrocarbylene, optionally wherein Ra and Rb together are a C4-8 cycloalkylene group,
• each occurrence of Rf is independently a C1-6 hydrocarbylene group,
• each occurrence of Rg is independently hydrogen, C1-12 hydrocarbyl, or C1-12 halohydrocarbyl, and
• n′ is 5 to 50;
• z is 0 or 1;
• and
• each occurrence of R is independently
• wherein
• Y2 is a divalent linking group having one of formulas
• wherein
• each occurrence of Rc and Rd independently is hydrogen or C1-12 alkyl,
• R5 is an epoxide-containing group, a cyanate-containing group, or a C1-12 hydrocarbyl optionally substituted with one or two carboxylic acid groups,
• each occurrence of R6, R7, and R8 independently is hydrogen, C1-18 hydrocarbyl, C2-18 hydrocarbyloxycarbonyl, nitrile, formyl, carboxylic acid, imidate, or thiocarboxylic acid, and
• each occurrence of R9, R10, R11, R12, and R13 independently is hydrogen, halogen, C1-12 alkyl, C2-12 alkenyl, hydroxy, amino, maleimide, carboxylic acid, or a C2-20 alkyl ester, provided that the capped poly(arylene ether) copolymer comprises:
• at least one repeating unit,
• wherein Q1a is a C1-12 primary or secondary alkyl, and Q1b is unsubstituted C6-12 aryl.