POLYCARBONATE RESIN COMPOSITION AND RESIN-METAL COMPOSITE MOLDING COMPRISING THE SAME

• Main Authors: KIZAWA HIROMITSU, MINAGAWA TAKESHI
• Format: Patent
• Language: English; Japanese
• Published: 15.07.2022
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

To provide a polycarbonate resin composition that has high adhesion to metal and shows little decrease in bonding strength in various environments and a resin-metal composite molding comprising the same.SOLUTION: The present invention discloses a polycarbonate resin composition to produce a resin molding in a composite molding, in which the resin molding is joined to a metal molding. The polycarbonate resin composition contains a resin component composed of (A) a modified polycarbonate resin (A component) 50-100 wt.%, containing a constitutional unit (A) of a formula [1] and a constitutional unit (B) of a formula [2], and (B) a polycarbonate resin (B component) 0-50 wt.%, excluding the A component. Relative to the resin component 100 pts.wt., the polycarbonate resin composition further contains (C) a reinforcing filler (C component) 10-100 pts.wt., containing a glass that contains 52.0-57.0 wt.% of SiO2, 13.0-17.0 wt.% of Al2O3, 15.0-21.5 wt.% of B2O3, 2.0-6.0 wt.% of MgO, 2.0-6.0 wt.% of CaO, 1.0-4.0 wt.% of TiO2 and less than 1.5 wt.% of F2 based on a total amount of the glass with a total amount of Li2O, Na2O and K2O being less than 0.6 wt.%.SELECTED DRAWING: None 【課題】金属との密着性に優れ、様々な環境下でも接合強度の低下が少ないポリカーボネート樹脂組成物およびそれからなる樹脂金属複合成形体を提供する。【解決手段】金属成形体と樹脂成形体が接合された複合成形体における樹脂成形体を製造するためのポリカーボネート樹脂組成物であって、（Ａ）下記式［１］で表される構成単位（Ａ）および下記式［２］で表される構成単位（Ｂ）を含む変性ポリカーボネート樹脂（Ａ成分）５０～１００重量％および（Ｂ）Ａ成分以外のポリカーボネート樹脂（Ｂ成分）０～５０重量％からなる樹脂成分１００重量部に対し、（Ｃ）ガラスの全量中、５２．０～５７．０重量％のＳｉＯ２、１３．０～１７．０重量のＡｌ２Ｏ３、１５．０～２１．５重量％のＢ２Ｏ３、２．０～６．０重量％のＭｇＯ、２．０～６．０重量％のＣａＯ、１．０～４．０重量％のＴｉＯ２および１．５重量％未満のＦ２とを含み、かつ、Ｌｉ２Ｏ、Ｎａ２ＯおよびＫ２Ｏの合計量が０．６重量％未満であるガラスを含有する強化充填材（Ｃ成分）１０～１００重量部を含有することを特徴とするポリカーボネート樹脂組成物。【選択図】なし