Solid compositions and methods for generating chlorine dioxide
AssigneeSipka Inc.
InventorsJohn Appadurai Thangaraj, Lakkaraju Dasaradhi
Life of this patent
Estimating the term…
Abstract
A composition for generating chlorine dioxide comprises active ingredients, a suitable hydrophobic compound, and a suitable super absorbent compound. A suitable hydrophobic compound will, among other characteristics, repel the solvent for at least the initial 30 seconds of exposure thereto. A suitable super absorbent compound will, among other characteristics, absorb at least 75 times its weight in solvent and will not gel until the chlorine-dioxide generating reaction is substantially complete.
Claims20
A dry blended composition for generating chlorine dioxide, comprising:
- (i) an alkali metal chlorite salt in an amount in a range of about 2 to about 35 weight percent;
- (ii) a solid acid source in an amount in a range of about 2 to about 40 weight percent;
- (iii) a hydrophobic compound, wherein the hydrophobic compound is sufficiently hydrophobic to repel solvent for at least 30 seconds, in an amount in a range of about 2 to about 60 weight percent;
- and
- (iv) a super absorbent compound, wherein the super absorbent compound is characterized by a gelation time of at least 5 minutes, in an amount in a range of about 2 to about 20 weight percent.
A dry blended composition for generating chlorine dioxide, comprising:
- active ingredients in a quantity selected to result in a desired yield of chlorine dioxide;
- a hydrophobic compound, wherein the hydrophobic compound is sufficiently hydrophobic to repel solvent for at least 30 seconds, in an amount in a range of about 2 to about 60 weight percent;
- and
- a super absorbent compound characterized by:
- (a) a solvent-release property appropriate for the completion time of the chlorine-dioxide generating reaction;
- and
- (b) a gelation time appropriate for a completion time of the chlorine-dioxide generating reaction, wherein the gelation time is at least 5 minutes, wherein an amount o the super absorbent compound is in a range of about 2 to about 20 weight percent.
A dry blended composition for generating chlorine dioxide, comprising:
- (i) an alkali metal chlorite salt in an amount of about 2 to about 70 weight percent;
- (ii) a solid acid source in an amount in a range of about 2 to about 80 weight percent;
- (iii) a hydrophobic compound, wherein the hydrophobic compound is sufficiently hydrophobic to repel solvent for at least 30 seconds, in an amount in a range of about 2 to about 60 weight percent;
- and
- (iv) a super absorbent compound, wherein the super absorbent compound is characterized by a gelation time of at least 5 minutes, in an amount of at least 2 weight percent up to a maximum amount, wherein the maximum amount is an amount that reduces a yield of chlorine dioxide by no more than about 20 percent from the highest yield of chlorine dioxide attainable from the composition, wherein the highest yield is attained at an amount of the super absorbent compound that is less than the maximum amount thereof.
Dependencies are inferred from the claim text.