Patent ID: 11912959
Assignee: SCHREIBER GMBH
Field: Basic materials chemistry (Chemistry)
Classification: CPC C  F | IPC C  F

Claim 7:
8. A method for impregnating a wick with a boron-free impregnating solution for a wick, wherein the impregnating solution comprises, a solvent, at least one first flame retardant; and at least one first additive, the first additive being selected from the group consisting of ammonium nitrate, cerium nitrate, a polymer, and combinations thereof,
comprising the steps
a) passing the wick through the impregnating solution at a speed of at least 100 m/min, wherein the dwell time of the wick in the impregnating solution is at least 0.5 seconds or more;
b) winding up the impregnated wick onto a drying device;, wherein the boron-free impregnating solution comprises a second additive, wherein the second additive of the boron-free impregnating solution is an inorganic nitrate, and the second additive is selected from the group consisting of ammonium nitrate and cerium nitrate, and wherein the second additive is different from the first additive.