To provide a polypropylene-based resin composition for an automobile interior part which enables manufacture of an injection molding that is excellent in scratch resistance and reduces poor appearance and is excellent in a mechanical property balance such as rigidity, low temperature impact resistance and tensile characteristics and a method for producing the same, and a molding for an automobile interior part.SOLUTION: A polypropylene-based resin composition for an automobile interior part contains a polypropylene-based resin (component A) containing a continuous phase composed of a propylene polymer and a rubber phase composed of an ethylene-propylene copolymer, an ethylene-α-olefin copolymer (component B), as needed, an inorganic filler (component C). A content ratio of the component A is 90-99 mass%, a content ratio of the component B is 1-10 mass%, a content ratio of the component C is 0-2 mass%, MFR is 25-50 g/10 min, and the propylene polymer and the ethylene-propylene copolymer constituting the component A satisfy predetermined physical properties.SELECTED DRAWING: None
【課題】耐傷付性に優れるとともに外観不良が低減され、剛性・低温耐衝撃性・引張特性等の機械物性バランスに優れた射出成形体が得られる、自動車内装部品用ポリプロピレン系樹脂組成物及びその製造方法、並びに自動車内装部品用成形体の提供。【解決手段】本発明の自動車内装部品用ポリプロピレン系樹脂組成物は、プロピレン重合体からなる連続相と、エチレン・プロピレン共重合体からなるゴム相とを含むポリプロピレン系樹脂(成分A)、エチレン・αオレフィン共重合体(成分B)、及び必要に応じて無機充填剤(成分C)を含有するポリプロピレン系樹脂組成物であって、成分Aの含有割合が90〜99質量%であり、成分Bの含有割合が1〜10質量%であり、成分Cの含有割合が0〜2質量%であり、MFRが25〜50g/10分であり、成分Aを構成するプロピレン重合体及びエチレン・プロピレン共重合体が所定の物性を満たす。【選択図】なし
POLYPROPYLENE-BASED RESIN COMPOSITION FOR AUTOMOBILE INTERIOR PART, METHOD FOR PRODUCING THE SAME, AND MOLDING FOR AUTOMOBILE INTERIOR PART
自動車内装部品用ポリプロピレン系樹脂組成物、その製造方法及び自動車内装部品用成形体
2021-11-01
Patent
Elektronische Ressource
Japanisch
IPC: | C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / C08F MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS , Makromolekulare Verbindungen, erhalten durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind / C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS |
Europäisches Patentamt | 2021
|Automobile interior decoration armrest structure and automobile interior decoration part
Europäisches Patentamt | 2022
|