Liquid crystal polyester thermosets

A curable blend comprised of at least two liquid crystalline polyester monomers represented by the formula:

• R.sup.1 --A.sup.1 --B.sup.1 --A.sup.2 --B.sup.2 --A.sup.3 --R.sup.2
• where R.sup.1 and R.sup.2 are radicals selected from the group consisting of maleimide, nadimide, methyl nadimide, and ethynyl, A.sup.1 and A.sup.3 are 1,4-phenylene and the same where said groups contain one or more substituents selected from the group consisting of halo, nitro, lower alkyl, lower alkoxy, fluoroalkoxy or fluoroalkyl, A.sup.2 is selected from the group consisting of substituted 1,4-phenylene containing one or more substituents selected from the group consisting of halo, nitro, lower alkyl, lower alkoxy, or fluoroalkyl, or 4,4'-biphenyl, 2,6-naphthalene and the same where said groups contain one or more substituents selected from the group consisting of halo, nitro, lower alkyl, lower alkoxy, or fluoroalkyl where R.sup.1 or R.sup.2 are ethynyl or A.sup.2 is selected from the group consisting of 1,4-phenylene, 4,4'-biphenyl, 2,6-naphthalene and the same where said groups contain one or more substituents selected from the group consisting of halo, nitro, lower alkyl, lower alkoxy, or fluoroalkyl where R.sup.1 or R.sup.2 are maleimide, nadimide, or methyl nadimide, and B.sup.1 and B.sup.2 are selected from the group consisting of --C(O)--O-- and --O--C(O)--.

A thermoset liquid crystalline polyester composition comprised of cured segments derived from one or more monomers represented by the formula:

• R.sup.1 --A.sup.1 --B.sup.1 --A.sup.2 --B.sup.2 --A.sup.3 --R.sup.2
• where R.sup.1 and R.sup.2 are radicals of ethynyl, A.sup.1 and A.sup.3 are phenylene and the same where said groups contain one or more substituents selected from the group consisting of halo, nitro, lower alkyl, lower alkoxy, fluoroalkoxy or fluoroalkyl, A.sup.2 is selected from the group consisting of substituted 1,4-phenylene containing one or more substituents selected from the group consisting of halo, nitro, lower alkyl, lower alkoxy, or fluoroalkyl, or 4,4'-biphenyl, 2,6-naphthalene and the same where said groups contain one or more substituents selected from the group consisting of halo, nitro, lower alkyl, lower alkoxy, or fluoroalkyl, and B.sup.1 and B.sup.2 are selected from the group consisting of --C(O)--O-- and --O--C(O)--.