Polycarbonate resin composition
AssigneeIdemitsu Kosan Co., Ltd.
InventorsTakahiro Torii, Koichi Suga
Life of this patent
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Abstract
Provided is a polycarbonate-based resin composition, including: a polycarbonate-based resin (A) containing at least one of a branched polycarbonate-based resin (A-1) or an aromatic polycarbonate-based resin (A-2) except the branched polycarbonate-based resin (A-1); a fluorine-containing compound (B) having such a hydrocarbon structure that all hydrogen atoms of the hydrocarbon structure are substituted with fluorine; and a polyether (C) having a polyoxyalkylene structure, wherein a content of the polyether (C) having a polyoxyalkylene structure is 0.02 part by mass or more and 2.0 parts by mass or less with respect to 100 parts by mass of the polycarbonate-based resin (A), and wherein a mass ratio of the fluorine-containing compound (B) to the polyether (C) is 15.00 or less.
Claims11
A polycarbonate-based resin composition, comprising:
- 100 parts by mass of a polycarbonate-based resin (A) comprising 50-100 mass % of a branched polycarbonate-based resin (A-1) and optionally, an aromatic polycarbonate-based resin (A-2) except the branched polycarbonate-based resin (A-1), wherein a branching ratio of the branched polycarbonate-based resin (A-1) is 0.45 to 2.30 mol %;
- 0.16-0.19 parts by mass of a fluorine-containing compound (B) comprising fluorine-containing compounds (B1) and (B2), wherein the compound (B1) is a polytetrafluoroethylene and the compound (B2) is a perfluoroalkylsulfonic acid metal salt;
- and
- a polyether (C) having a polyoxyalkylene structure,
- wherein the polycarbonate-based resin composition is free of a light diffuser,
- wherein a content of the polyether (C) having a polyoxyalkylene structure is 0.1 part by mass or more and 0.6 parts by mass or less with respect to 100 parts by mass of the polycarbonate-based resin (A),
- wherein a mass ratio of the fluorine-containing compound (B) to the polyether (C) is 15.00 or less, and
- wherein the content of the fluorine-containing compound (B1) is 0.13 part by mass or less with respect to 100 parts by mass of the polycarbonate-based resin (A),
- wherein a product of the content of the fluorine-containing compound (B1) with respect to 100 parts by mass of the polycarbonate-based resin (A) and the branching ratio in the polycarbonate-based resin (A) is 0.050 or more and 0.2 or less,
- wherein a total light transmittance of a 3-millimeter thick portion of the polycarbonate-based resin composition measured by the following method A is 70% or more:
- Method A:
- a test piece that is a three-stage plate measuring 90 mm×50 mm, including the 3-millimeter thick portion measuring 45 mm×50 mm, a 2-millimeter thick portion measuring 22.5 mm×50 mm, and a 1-millimeter thick portion measuring 22.5 mm×50 mm, is produced using a pellet obtained from the polycarbonate-based resin composition by an injection molding method at a molding temperature of 310° C. and a mold temperature of 95° C., and is subjected to measurement of the total light transmittance in conformity with JIS K 7375:2008, and
- wherein, when the polycarbonate-based resin composition is molded to have a thickness of 1.0 mm, the polycarbonate-based resin composition has a V-0 flame retardancy rank under a UL94 standard.
Dependencies are inferred from the claim text.