Liquid-crystal polymer is composed of the following repeating units: 10 mol % to 35 mol % of

##STR00001##

10 mol % to 35 mol % of

##STR00002##

10 mol % to 50 mol % of

##STR00003##

and 10 mol % to 40 mol % of

##STR00004##

10 mol % to 40 mol % of

##STR00005##

or a combination thereof. Each of AR.sup.1, AR.sup.2, AR.sup.3, and AR.sup.4 is independently AR.sup.5 or AR.sup.5-Z-AR.sup.6, in which each of AR.sup.5 and AR.sup.6 is independently

##STR00006##

or a combination thereof, and Z is O,

##STR00007##

or C.sub.1-5 alkylene group. Each of X and Y is independently H, C.sub.1-5 alkyl group, CF.sub.3, or

##STR00008##

wherein R.sup.2 is H, CH.sub.3, CH(CH.sub.3).sub.2, C(CH.sub.3).sub.3, CF.sub.3, or

##STR00009##

n=1 to 4 ; and wherein R.sup.1 is C.sub.1-5 alkylene group.

A polymer, includes a first structural unit represented by formula (1), a second structural unit represented by formula (2-1), formula (2-2), or both, and a third structural unit represented by formula (3-1), formula (3-2), or both. The polymer preferably has a weight-average molecular weight in terms of polystyrene of 500 or more and 400,000 or less. A composition includes the polymer and an organic solvent. A molded body includes the polymer.

##STR00001##

Liquid-crystal polymer is composed of the following repeating units: 10 mol % to 35 mol % of ##STR00001##
10 mol % to 35 mol % of ##STR00002##
10 mol % to 50 mol % of ##STR00003##
and 10 mol % to 40 mol % of ##STR00004##
10 mol % to 40 mol % of ##STR00005##
or a combination thereof. Each of AR.sup.1, AR.sup.2, AR.sup.3, and AR.sup.4 is independently AR.sup.5 or AR.sup.5-Z-AR.sup.6, in which each of AR.sup.5 and AR.sup.6 is independently ##STR00006##
or a combination thereof, and Z is O, ##STR00007##
or C.sub.1-5 alkylene group. Each of X and Y is independently H, C.sub.1-5 alkyl group, CF.sub.3, or ##STR00008##
wherein R.sup.2 is H, CH.sub.3, CH(CH.sub.3).sub.2, C(CH.sub.3).sub.3, CF.sub.3, or ##STR00009##
n=1 to 4; and wherein R.sup.1 is C.sub.1-5 alkylene group.

Liquid-crystal polymer is composed of the following repeating units: 10 mol % to 35 mol % of ##STR00001##
10 mol % to 35 mol % of ##STR00002##
10 mol % to 50 mol % of ##STR00003##
and 10 mol % to 40 mol % of ##STR00004##
10 mol % to 40 mol % of ##STR00005##
or a combination thereof. Each of AR.sup.1, AR.sup.2, AR.sup.3, and AR.sup.4 is independently AR.sup.5 or AR.sup.5-Z-AR.sup.6, in which each of AR.sup.5 and AR.sup.6 is independently ##STR00006##
or a combination thereof, and Z is O, ##STR00007##
or C.sub.1-5 alkylene group. Each of X and Y is independently H, C.sub.1-5 alkyl group, CF.sub.3, or ##STR00008##
wherein R.sup.2 is H, CH.sub.3, CH(CH.sub.3).sub.2, C(CH.sub.3).sub.3, CF.sub.3, or ##STR00009##
n=1 to 4; and wherein R.sup.1 is C.sub.1-5 alkylene group.

An object of the present invention is to provide a liquid crystal polyester resin composition in which satisfactory fluidity and excellent mechanical properties as well as flame retardancy are obtained, and the generation of particles is suppressed, and a molded article composed of the liquid crystal polyester resin composition. The present invention relates to a liquid crystal polyester resin composition containing: 100 parts by mass of a liquid crystal polyester (A) including repeating units represented by the formulas (I) to (III), ##STR00001##
wherein Ar.sub.1 and Ar.sub.2 each represent one or more divalent aromatic groups, and p, q and r each represent a composition ratio (mol %) of each repeating unit in the liquid crystal polyester (A) and satisfy the following conditions, 35p90, 5q30, and 5r30; and 1 to 150 parts by mass of a fibrous titanium oxide (C).

An object of the present invention is to provide a liquid crystal polyester resin composition in which satisfactory fluidity and excellent mechanical properties as well as flame retardancy are obtained, and the generation of particles is suppressed, and a molded article composed of the liquid crystal polyester resin composition. The present invention relates to a liquid crystal polyester resin composition containing: 100 parts by mass of a liquid crystal polyester (A) including repeating units represented by the formulas (I) to (III), ##STR00001##
wherein Ar.sub.1 and Ar.sub.2 each represent one or more divalent aromatic groups, and p, q and r each represent a composition ratio (mol %) of each repeating unit in the liquid crystal polyester (A) and satisfy the following conditions, 35p90, 5q30, and 5r30; and 1 to 150 parts by mass of a fibrous titanium oxide (C).

Liquid crystalline hydroquinone-3,4-biphenyl dicarboxylate polyesters, and methods of making them. The polyesters may be melt processed at a temperature below the thermal decomposition temperature and the isotropic temperature, and may form a liquid crystalline glass phase. The polyesters may be formed by polycondensation of hydroquinone or a hydroquinone derivative with 3,4-biphenyl dicarboxylic acid.

Liquid crystalline hydroquinone-3,4-biphenyl dicarboxylate polyesters, and methods of making them. The polyesters may be melt processed at a temperature below the thermal decomposition temperature and the isotropic temperature, and may form a liquid crystalline glass phase. The polyesters may be formed by polycondensation of hydroquinone or a hydroquinone derivative with 3,4-biphenyl dicarboxylic acid.

Liquid crystalline hydroquinone-3,4-biphenyl dicarboxylate polyesters, and methods of making them. The polyesters may be melt processed at a temperature below the thermal decomposition temperature and the isotropic temperature, and may form a liquid crystalline glass phase. The polyesters may be formed by polycondensation of hydroquinone or a hydroquinone derivative with 3,4-biphenyl dicarboxylic acid.

Liquid crystalline hydroquinone-3,4-biphenyl dicarboxylate polyesters, and methods of making them. The polyesters may be melt processed at a temperature below the thermal decomposition temperature and the isotropic temperature, and may form a liquid crystalline glass phase. The polyesters may be formed by polycondensation of hydroquinone or a hydroquinone derivative with 3,4-biphenyl dicarboxylic acid.