Patent ID: 8178631

Claim:
A resin composition comprising: (1) a benzoxazole resin precursor, wherein the benzoxazole resin precursor has a first repeating unit obtained by reacting a bisaminophenol compound and a dicarboxylic acid compound and having a diamondoid structure selected from structural units having an adamantane structure, wherein the first repeating unit is selected from: (a) a repeating unit obtained by reacting a bisaminophenol compound having a diamondoid structure and a dicarboxylic acid compound not having a diamondoid structure; (b) a repeating unit obtained by reacting a bisaminophenol compound not having a diamondoid structure and a dicarboxylic acid compound having a diamondoid structure; and (c) a repeating unit obtained by reacting a bisaminophenol compound having a diamondoid structure and a dicarboxylic acid compound having a diamondoid structure, wherein the bisaminophenol compound having a diamondoid structure is selected from a bisaminophenol compound having a diamondoid structure in a bisaminophenol skeleton or a bisaminophenol compound having a diamondoid structure bonded to a bisaminophenol skeleton directly or via other atom, and the dicarboxylic acid compound having a diamondoid structure is selected from a dicarboxylic acid compound having a diamondoid structure in a dicarboxylic acid skeleton and a dicarboxylic acid compound having a diamondoid structure bonded to a dicarboxylic acid skeleton directly or via other atom; and (2) a cross-linking agent having the formula A(B) p , wherein A is an organic group which includes an adamantyl group, a 3,5-diphenyladamantyl group, a 3,5,7-triphenyladamantyl group, a 3,5,7,9-tetraphenyladamantyl group, a 1,1′-biadamantyl group, a 1,2′-biadamantyl group, a 2,2′-biadamantyl group, a 3,3′-diphenyl-1,1′- biadamantyl group, a 3,3′,5,5′-tetraphenyl-1,1′-biadamantyl group, or a 3,3′,5,5′,7,7′-hexaphenyl-1,1′- biadamantyl group p is at least two or more and B is a cross linking group capable of linking benzoxazole resin precursor and capable of linking with a cross-linking agent to form a net-like structure.