Patents Represented by Attorney Akerman Senterfirt

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  • Process for the production of high purity melamine from urea
    Patent number: 6858730
    Abstract: A method for purifying melamine comprising impurities like ureido-melamine, oxotriazines, melam, melem, comprises the step of putting into contact at a temperature comprised between 340° C. and 410° C. and at a pressure comprised between 8 and 17 MPa a melamine melt with a bed of a catalyst thus obtaininig melamine with a purity of at least 99%.
    Type: Grant
    Filed: September 6, 2001
    Date of Patent: February 22, 2005
    Assignee: Casale Chemicals S.A.
    Inventor: Willi Ripperger