Patents Represented by Law Firm Sheiner & O'Connor
  • Process for the preparation of a shapeable solution of cellulose in the presence of a tertiary amine oxide and an additive
    Patent number: 4880469
    Abstract: The invention relates to solutions of cellulose destined to be extruded or spun, containing a tertiary amine oxide as solvent for the cellulose and in particular the N-oxide of N-methylmorpholine. It consists of using ammonium chloride or calcium chloride as additive in the preparation of these solutions.
    Type: Grant
    Filed: June 27, 1988
    Date of Patent: November 14, 1989
    Assignees: Institut Textile de France, Centre de Recherche Scientifique
    Inventors: Henri D. Chanzy, Michel Paillet