The present invention provides a propylene resin composition having an excellent balance between low-temperature impact resistance and rigidity, and which is suitable for automobile interior and exterior trim parts. The resin composition contains the following components A, B, and C: Component A: 50 to 80% by weight of a crystalline propylene-ethylene block copolymer having an ethylene content of 1 to 15% by weight, and a melt flow rate of 10 to 100 g/10 min. Component B: 5 to 40% by weight of an ethylene-.alpha.-olefin copolymer containing 25 to 70% by weight of an .alpha.-olefin having 4 to 18 carbon atoms, a melt flow rate of 0.01 to 7 g/10 min., and a density of 0.850 to 0.890 g/cm.sup.3 Component C: 1 to 30% by weight of talc having an average particle size of 0.1 to 5.mu..
This invention relates to a thermoplastic resin composition containing: (a) about 85 to about 95 weight % of a crystalline propylene ethylene block copolymer or a combination of crystalline propylene ethylene copolymer and a propylene homopolymer whose (i) ethylene content ranges from about 2.2 to about 4.2 weight %, (ii) melt flow rate ranges from about 20 to about 30 g/10 minutes, and (iii) isotactic/pentad fraction of propylene homopolymer is greater than or equal to about 94%; (b) about 2 to about 8 weight % ethylene butene rubber whose melt flow rate ranges from about 6 to about 8 g/10 minutes and density ranges from about 0.860 to about 0.865 g/cc and (c) about 2 to about 8 parts by weight talc with an average diameter ranging from about 1 to about 2 .mu.m. The thermoplastic resin composition is lightweight but maintains good rigidity and heat resistance properties. The thermoplastic resin may be molded into an article, such as those used as parts for an automobile interior.
High melt flow filled propylene polymer compositions suitable for injection molding are provided. The compositions are blends of propylene impact copolymer, high melt index plastomer and mineral filler.
A nonwoven web made from a polymeric fiber blend comprising at least one elastomeric polyolefin and at least one nonelastomeric polyolefin useful as the elastic base sheet for a nonwoven laminate is disclosed. Preferably, the polymeric blend will comprise a nonelastomeric resin in the range of from about 10 to about 90 percent by weight, and an elastomeric resin of from about 90 to about 10 percent by weight. The elastomeric polyolefin will have a density of less than about 0.885 g/cm.sup.3 and the nonelastomeric polyolefin will have a density of at least about 0.890 g/cm.sup.3. In one particular embodiment, the polymeric blend may comprise about 50 percent to about 90 percent by weight of a narrow molecular weight distribution polyethylene and about 50 percent to about 10 percent by weight of a nonelastomeric polyolefin such as a linear low density polyethylene.
