PC/ABS COMPOSITIONS THAT RETAIN STABLE STATE DURING PROCESSING

• Main Authors: SEIDEL ANDREAS, ECKEL THOMAS, MARTIN HAEUSLER
• Format: Patent
• Language: English; Japanese
• Published: 21.12.2017
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

PROBLEM TO BE SOLVED: To provide polycarbonate/ABS molding compositions which have improved stress cracking resistance and more stable high gloss and also exhibit lower thermal polycarbonate degradation under disadvantageous processing conditions (high temperature, high shear and/or long dwell time) and a reduced content of free bisphenol A.SOLUTION: A thermoplastic molding composition comprises: A) 40.0 to 99.5 parts by weight of at least one aromatic polycarbonate or polyester carbonate having an OH end group content less than 300 ppm; B) 0.5 to 60.0 parts by weight of at least one graft polymer comprising lithium, sodium, potassium, magnesium and calcium of less than 100 ppm in total; C) 0.0 to 30.0 parts by weight of vinyl (co)polymer; and D) 0.0 to 40.0 parts by weight of other general polymer additives; where the sum of the parts by weight of components A) to D) is 100 parts by weight.SELECTED DRAWING: None 【課題】改善された耐応力亀裂性とより安定な高光沢を有し、又、不利な加工条件（高温、高剪断及び／又は長滞留時間）下でのより少ないポリカーボネート熱分解、及び遊離ビスフェノールＡの低含量ポリカーボネート／ＡＢＳ成形用組成物の提供。【解決手段】Ａ）４０．０〜９９．５重量部の、ＯＨ末端基含量３００ｐｐｍ未満を有する少なくとも１種の芳香族ポリカーボネートまたはポリエステルカーボネート、Ｂ）０．５〜６０．０重量部の、リチウム、ナトリウム、カリウム、マグネシウム及びカルシウムの総含量１００ｐｐｍ未満を有する少なくとも１種のグラフトポリマー、Ｃ）０．０〜３０．０重量部のビニル（コ）ポリマー、Ｄ）０．０〜４０．０重量部の他の一般的なポリマー添加剤を、成分Ａ）〜Ｄ）の重量部の合計が１００重量部となるように含んでなる熱可塑性成形用組成物。【選択図】なし