Method for brightening synthetic fibers and plastics with granulated optical brighteners
OwnerThomas Martini, Jean-Luc Murainventors
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Abstract
A method has been found for brightening synthetic fibers and plastics. In this method, a granulate optical brightener is incorporated into the synthetic fibers or plastics, the granulated optical brightener being obtained via compacting of an optical brightener in powder form in a pressure compactor under a pressure of from 3 to 50 kNewton/cm of tube length and then comminuting the resultant compactate.
Claims11
A method for the brightening of synthetic fiber or plastic comprising the step of incorporating a granulated optical brightener into the synthetic fiber or plastic, wherein the granulated optical brightener has at least one optical brightener and is obtained by compacting an optical brightener in powder form in a pressure compactor under a pressure of from 3 to 50 kNewton/cm of tube length to form a compactate and comminuting the compactate to from the granulated optical brightener.
A method for brightening synthetic fiber or plastic comprising the step of incorporating at least one granulated optical brightener into the synthetic fiber or plastic, wherein the granulated optical brightener has at least one optical brightener and is obtained by compacting an optical brightener in powder form in a pressure compactor under a pressure of from 3 to 50 kNewton/cm of tube length to form a compactate and comminuting the compactate to from the granulated optical brightener.
Dependencies are inferred from the claim text.