Process for producing cellulosic shaped objects
AssigneeAkzo Nobel N.V.
InventorsDerek Budgell, Ulrich Wachsmann, Wilhelm Kramer
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AssigneeAkzo Nobel N.V.
InventorsDerek Budgell, Ulrich Wachsmann, Wilhelm Kramer
Estimating the term…
A process for producing cellulosic shaped objects includes extruding and coagulating a solution of chemical wood pulp in a tertiary amine oxide, and possibly a liquid that does not dissolve wood pulp and is miscible with the tertiary amine oxide, the solution capable of being shaped into objects, the process of producing the shapeable solution employing a first wood pulp with a higher degree of polymerization and a second wood pulp with a lower degree of polymerization, and whereby initially a solution of the first wood pulp with a higher degree of polymerization in the tertiary amine oxide and possibly non-dissolving liquid, and a composition containing the second wood pulp with a lower degree of polymerization, tertiary amine oxide, and possibly non-dissolving liquid, are prepared separately, and the solution and composition are subsequently at least mixed to obtain the shapeable solution.
A process for producing cellulosic shaped objects by extruding and coagulating a shapeable solution capable of being shaped into objects and copmrised of chemical wood pulp in a tertiary amine oxide, and optionally a liquid that does not dissolve wood pulp and is miscible with the tertiary amine oxide, the process comprising:
A process for producing a shapeable solution from a first wood pulp with a higher degree of polymerization and a second wood pulp with a lower degree of polymerization, the process comprising preparing a solution of the first wood pulp with the higher degree of polymerization in tertiary amine oxide and optional non-dissolving liquid, separately forming a composition containing the second wood pulp with the lower degree of polymerization, tertiary amine oxide, and optional non-dissolving liquid, and subsequently at least mixing the solution and the composition to obtain the shapeable solution.
Dependencies are inferred from the claim text.