Patent ID: 7704408
Filing Date: 2010-04-27
Classification: G03G

Abstract:
1. A resin-molded component for a signal reader formed from a composition comprising 55 to 75% by weight of liquid crystalline polymer (A), 20 to 10% by weight of an inorganic hollow sphere (B1), and 25 to 15% by weight of a fibrous inorganic filler (B2), with the total of (A), (B1) and (B2) being 100% by weight, and having 1.4 or smaller specific gravity d and 0.5 W/m·K or larger thermal conductivity λ, wherein said liquid crystalline polymer (A) is composed of the structural units expressed by the general formulae (I), (II), (III) and (IV), respectively, at amounts of the structural unit (I) being 40 to 75% by mole, the structural unit (II) being 8.5 to 30% by mole, the structural unit (III) being 8.5 to 30% by mole, and the structural unit (IV) being 0.1 to 8% by mole, with the total of the structural units (I) through (IV) being 100% by mole: where, in (I) through (IV), Ar 1 is 2,6-naphthalene group, Ar 2 is one or more groups selected from 1,2-phenylene group, 1,3-phenylene group and 1,4-phenylene group, Ar 3 is one or more groups selected from 1,3-phenylene group, 1,4-phenylene group and p,p′-polyphenylene group, and Ar 4 is 1,4-phenylene group, and wherein a test piece of said composition prepared from a resin-molded specimen in accordance with ISO 178 has a flexural modulus of 10 GPa or larger.