申请人:The Geon Company
公开号:EP0587104A2
公开(公告)日:1994-03-16
Improved PVC compounds formulated for exhibiting low smoke generation and having high processing stability and impact resistance comprising polyvinyl chloride, an effective amount of at least one smoke suppressant selected from the group consisting of molybdenum, iron, copper, zinc, vanadium, lithium, sodium, potassium, magnesium, calcium, barium, zirconium, manganese, phosphorous, aluminum, chromium, boron, tin and titanium based smoke suppressants, including mixtures, and a lubricant system comprising an ester of a long chain carboxylic acid, a chemically modified paraffin wax, and alkyl ester of an alkyl polyol, and optionally a C₈ to C₃₀ substituted or unsubstituted carboxylic acid and a hydrocarbon wax. The compounds disclosed exhibit an improved combination of properties for a rigid compound exhibiting a heat distortion temperature of at least 60°C, including dynamic thermal stability, impact strength and reduced smoke density in both the flaming and non-flaming mode per NFPA 258. Preferably, an impact modifier system is included and is selected from the group consisting of an acrylic polymeric impact modifier, an MBS impact modifier, and an ABS impact modifier. A primary stabilizer is included and a preferred stabilizer system comprises a tin compound and a co-stabilizer selected from epoxidized materials. The compounds are useful substitutes for engineering thermoplastics in large and/or intricate shaped articles including shower stalls, wall panels, tub enclosures, refrigerator panels, appliance housings, electrical housings, sporting equipment, plumbing ware, automotive components, business machine components and housings.
一种改良聚氯乙烯化合物,配制成具有低发烟性、高加工稳定性和抗冲击性,包括聚氯乙烯、至少一种有效量的烟雾抑制剂,该抑制剂选自钼、铁、铜、锌、钒、锂、钠、钾、镁、钙、钡、锆、锰、磷、铝、铬、硼、锡和钛组成的组、以钼、铁、铜、锌、钒、锂、钠、钾、镁、钙、钡、锆、磷、铝、铬、硼、锡和钛为基础的烟雾抑制剂(包括混合物),以及润滑剂系统,该润滑剂系统包括长链羧酸酯、化学改性石蜡、烷基多元醇烷基酯,以及可选的 C₈至 C₃₀取代或未取代的羧酸和烃蜡。对于热变形温度至少为 60°C 的硬质化合物来说,所公开的化合物具有更好的综合性能,包括动态热稳定性、抗冲击强度以及在 NFPA 258 规定的燃烧和非燃烧模式下降低烟密度。最好包括抗冲击改性剂系统,该系统选自丙烯酸聚合物抗冲击改性剂、MBS 抗冲击改性剂和 ABS 抗冲击改性剂组成的组。此外,还包括一种主稳定剂,优选的稳定剂体系包括一种锡化合物和一种选自环氧 化材料的辅助稳定剂。这些化合物可以替代工程热塑性塑料,用于大型和/或复杂形状的物品,包括淋浴间、墙板、浴缸外壳、冰箱面板、电器外壳、电气外壳、运动器材、水暖器材、汽车部件、商业机器部件和外壳。