GLASS FIBER-REINFORCED RESIN COMPOSITION

• Main Author: MURAI MAIKO
• Format: Patent
• Language: English
• Published: 21.06.2012
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; GENERAL PROCESSES OF COMPOUNDING; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WORKING-UP

PROBLEM TO BE SOLVED: To provide a resin composition which has excellent mechanical strength, reduced anisotropy in a mold shrinkage, and high impact properties with a resin composition as a substrate comprising a polycarbonate resin reinforced with flat cross-sectional glass fiber.SOLUTION: The glass fiber-reinforced resin composition contains: (A) 40 to 99 pts.wt. of a resin component (A component) comprising a polycarbonate-polyorganosiloxane copolymer (A-1 component) composed of a carbonate constituting unit represented by general formula [1] and a carbonate constituting unit represented by general formula [3] and a polycarbonate resin (A-2 component) composed of the carbonate constituting unit represented by the general formula [1], wherein the weight ratio between the A-1 component and the A-2 component (A-1 component/A-2 component) is 10/90 to 100/0; and (B) 1 to 60 pts.wt. of a reinforcing filler (B component) comprising the flat cross-sectional glass fiber (B-1 component), in which the average value of the major axis in the fiber cross-section is 10 to 50 μm and the average value between the major axis and the minor axis (major axis/minor axis) is 1.5 to 8.0, and a filler (B-2 component) other than the B-1 component, wherein the weight ratio between the B-1 component and the B-2 component (B-1 component/B-2 component) is 5/95 to 100/0.