Patents Assigned to Cristallo Holdings, Inc.
  • PROCESS FOR SURFACE ACTIVATION AND/OR DEVULCANIZATION OF SULFUR-VULCANIZED RUBBER PARTICLES
    Publication number: 20100203601
    Abstract: Process for surface activation and/or devulcanization of sulfur-vulcanized rubber particles. In order to break the sulfur bridges and to reduce the sulfur, the rubber particles are treated in a biotechnological manner in a medium with mesophilic anaerobic and/or optionally anaerobic and/or microaerophilic bacteria and/or with one or more enzyme systems of such bacteria. The thus-treated activated rubber particles show improved vulcanization properties in comparison with non-treated rubber particles, and permit the production of better quality articles.
    Type: Application
    Filed: April 20, 2010
    Publication date: August 12, 2010
    Applicant: CRISTALLO HOLDINGS, INC.
    Inventor: Willi Neumann
  • Process for surface activation and/or devulcanisation of sulfur-vulcanized rubber particles
    Patent number: 7749747
    Abstract: Process for surface activation and/or devulcanization of sulfur-vulcanized rubber particles. In order to break the sulfur bridges and to reduce the sulfur, the rubber particles are treated in a biotechnological manner in a medium with mesophilic anaerobic and/or optionally anaerobic and/or microaerophilic bacteria and/or with one or more enzyme systems of such bacteria. The thus-treated activated rubber particles show improved vulcanization properties in comparison with non-treated rubber particles, and permit the production of better quality articles.
    Type: Grant
    Filed: March 29, 2004
    Date of Patent: July 6, 2010
    Assignee: Cristallo Holdings, Inc.
    Inventor: Willi Neumann