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US 12,460,154 B2Granted
Boron-free impregnating solution for a wick and boron-free wick
AssigneeSchreiber Corporation, Inc.
InventorsCarsten Staubach, Lukas Staubach, Norbert Staubach
Life of this patent
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Abstract
The invention relates to a boron-free impregnating solution for a wick, a boron-free wick, and a candle comprising a wick according to the invention. The invention further relates to a method for impregnating a wick with an impregnating solution according to the invention.
Claims13
A boron-free wick, comprising
- a) a wick material,
- the wick material being selected from cotton, rayon staple, cellulose fibers, paper yarn, linen yarn, and/or combinations thereof;
- b) at least one flame retardant;
- c) an amount of a first additive;
- and
- d) a second additive that is an inorganic sulfate selected from the group consisting of lithium sulfate, beryllium sulfate, sodium sulfate, ammonium sulfate, magnesium sulfate, aluminum sulfate, potassium sulfate, and calcium sulfate, wherein the proportion of inorganic sulfate is from 0.001 to 10 weight % relative to the total amount of the wick.
3 more elements
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 flame retardant;
- and a first additive that is cerium nitrate, and a second additive that is an inorganic sulfate;
- 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;
- and
- b) winding up the impregnated wick onto a drying device,
- wherein a further, upstream step is performed before step a), in which the wick is plaited.
3 more elements
A boron-free wick obtained by impregnating a wick material with an impregnating solution, comprising:
- a) a solvent;
- b) at least one flame retardant;
- c) a first additive that is cerium nitrate;
- and
- d) at least one second additive that is an inorganic sulfate, wherein the proportion of inorganic sulfate is from 0.001 to 10 weight % relative to the total amount of the wick.
2 more elements
Dependencies are inferred from the claim text.