Patents Assigned to Aristech Chemical Company
  • Patent number: 6503595
    Abstract: The disclosure relates to a carpet, a process for manufacturing a carpet and a method for recycling a carpet. The carpet of the present disclosure includes a primary backing having tufts of synthetic carpet fibers protruding from a top surface and, optionally, a secondary backing, with an extruded sheet of a polyolefin polymer composition between and integrally fused to a bottom surface of the primary backing and an upper surface of the secondary backing. The extruded sheet polymer composition comprises at least 10%, preferably, at least 20% by weight of a syndiotactic polypropylene product. The extruded sheet polymer composition may further comprise less than 40% by weight of an impact modifier. The process for manufacturing the recyclable carpet includes contacting the extruded sheet with the primary backing and, optionally, the secondary backing, at a temperature sufficiently high to integrally fuse the extruded sheet to the respective backing.
    Type: Grant
    Filed: February 22, 2000
    Date of Patent: January 7, 2003
    Assignee: Aristech Chemical Company
    Inventors: Sehyun Kim, Sharon Jones Elliott
  • Patent number: 6268064
    Abstract: The present invention relates to polypropylene compositions for forming articles through extrusion. These parts are particularly useful in automotive body side moldings applications. In one embodiment, the invention is directed to an extruded resin material comprising (a) a skin layer of polypropylene polymer and (b) a core layer composition comprising a polypropylene polymer with an impact modifier and an inorganic filler. The core composition preferably comprises about 25-30 percent by weight of the impact modifiers. The impact modifier is preferably a copolymer of ethylene and a higher alpha olefin. The inorganic filler is present in an amount of about ten percent by weight.
    Type: Grant
    Filed: September 28, 1999
    Date of Patent: July 31, 2001
    Assignee: Aristech Chemical Company
    Inventor: Sehyun Kim