Patents Assigned to PTP Group Ltd.
  • Method for processing polyester waste
    Patent number: 7745563
    Abstract: A method for processing polyester wastes, especially used polyester bottles, which comprises shredding, washing, drying and melting the waste mixture to obtain a starting raw material wherein a modifying agent selected from the group comprising a combination of polysiloxane and a plasticizer selected from the group of phthalates, or a combination of silazanes and silanes is added to the shredded and dried waste mixture, the amount of the modifying agent being 4 to 6% by weight, based on the waste mixture.
    Type: Grant
    Filed: January 8, 2009
    Date of Patent: June 29, 2010
    Assignee: PTP Group Ltd.
    Inventors: Viktor Bulgakov, Levan Dadiani, George Javakhishvili