Patents Assigned to Polimerplast
  • Composition for obtaining foamed polyvinylchloride material and method of obtaining it
    Patent number: 5705538
    Abstract: A foamed polyvinylchloride (PVC) material is produced by mixing of 100 mass parts of PVC with 0.5-5 mass parts of sodium alkyl sulfonate, molding of the obtained composition and followed by heating for foaming at 190.degree.-300.degree. C. for 3-20 mins. Molding is performed either under 0.5-400 MPa and 20.degree.-170.degree. C., followed by heating to 140.degree.-150.degree. C. in the closed space, or in a free state in the form of 2-16 mm thickness layer. In the latter case the layer before foaming can be subjected to packing.
    Type: Grant
    Filed: April 3, 1995
    Date of Patent: January 6, 1998
    Assignee: Polimerplast
    Inventors: Igor Victorovich Morozov, Lyubov Dmitrievna Strelkova, Yuliya Vladimirovna Razborova, Pyotr Mikhailovich Traskin, German Valeryevich Gordeyev, Valery Innokentyevich Yemelyanov, Valery Iosifovich Kharitonov, Anatoly Fyodorovich Perevalov, Vladimir Yevgenyevich Popov, Vyacheclav Nikolayevich Kovalev