申请人:Nippon Petrochemicals Company, Limited
公开号:EP0508415A2
公开(公告)日:1992-10-14
A polyolefin-based mat film or sheet can be preared from a polymeric blend of the preset invention comprising a propylene polymer or copolymer as component (A) and a specific ethylene-α-olefin copolymer (VLDPE, so-called "super low-density polyethylene") as component (B). The polymeric blend may further comprise a high-pressure radical polymerization process ethylene polymer or copolymer and /or a modified polyolefin-based resin as component (C). The above blend of the present invention may further comprise an inorganic filler as component (D) and a flame retardant as component (E). The mat films or sheets prepared from these polymeric blends are excellent in tensile modulus, flexibility, impact resistance, thermal resistance, laminating properties, flame resistance, chalking resistance, covering power, scratch resistance, and widely used for fabricating adhesive tapes, covers or cases for stationeries, fashion bags, sheets for interior finish work in construction and automobile industries, and sheets for dressing steel plates.
聚烯烃基垫层薄膜或片材可以由本发明的聚合物混合物预制而成,该聚合物混合物由丙烯聚合物或共聚物作为组分(A)和特定的乙烯-α-烯烃共聚物(VLDPE,即所谓的 "超低密度聚乙烯")作为组分(B)组成。聚合物混合物可进一步包括高压自由基聚合工艺乙烯聚合物或共聚物和/或改性聚烯烃基树脂作为组分(C)。本发明的上述混合物还可进一步包括作为组分(D)的无机填料和作为组分(E)的阻燃剂。用这些聚合物混合物制备的毡膜或薄片具有优异的拉伸模量、柔韧性、抗冲击性、耐热性、层压性、阻燃性、抗粉化性、遮盖力和抗划伤性,可广泛用于制造胶带、文具封面或包装盒、时装包、建筑和汽车工业内部装修用薄片以及钢板修整用薄片。