Composition for producing a board and printed circuit board using the same

A composition, comprising:

• a liquid crystal polymer or oligomer having a terminal hydroxyl group;
• and
• a cross-linking agent comprising a bismaleimide compound, an epoxy resin or a combination thereof,
• wherein the liquid crystal polymer or oligomer is represented by Formula 1:
• Z1-(R1)m—(R2)n-Z2 (1)
• wherein R1 is represented by Formula 2:
• —X1—Ar1—Y1— (2),
• wherein X1 and Y1 are each independently selected from the group consisting of O, CO and NR″, in which R″ is independently selected from the group consisting of a hydrogen atom, a substituted or unsubstituted C1-C20 alkyl group, and a substituted or unsubstituted C6-C30 aryl group and Ar1 comprises at least one divalent aromatic or alicyclic organic group selected from the group consisting of Formula 3:
• wherein at least one of the carbon atoms present in each of the aromatic and aliphatic rings is optionally replaced with a heteroatom independently selected from the group consisting of N, O, S and P, and each A1 represents a single bond or is O, S, CO, SO, SO2 or a divalent aliphatic or aromatic organic group,
• R2 is represented by Formula 6:
• —X2—Ar3—Y2— (6),
• wherein X2 and Y2 are each independently selected from the group consisting of O, CO and NR″, and Ar3 comprises at least one divalent aromatic or alicyclic organic group selected from the group consisting of Formula 7:
• wherein A2 is N2, O, S, CO, SO, SO2 or a divalent aliphatic or aromatic organic group,
• Z1 and Z2 are the same or different and are each independently an organic group comprising a hydroxyl, amine, carboxylic acid, acetyl or thiol group, with the proviso that at least one of Z1 and Z2 has a hydroxyl group, and
• m and n are each independently an integer from about 1 to about 100.