MULTIFUNCTIONAL LAUNDRY SHEET

• US 20080103084A1
• Filed: 10/26/2007
• Published: 05/01/2008
• Est. Priority Date: 10/27/2006
• Status: Abandoned Application

• Current Assignee: Banco Michael J, Zheng Gu
• Original Assignee: Banco Michael J, Zheng Gu
• Inventors: Gu, Zheng, Banco, Michael J.
• Application Number:
  US11/924,912
• Publication Number:
  US 20080103084A1
• Time in Patent Office: Days
• US Class Current: 510/516
• CPC Class Codes: C11D 1/62 Quaternary ammonium compounds
• CPC Class Codes: C11D 17/047 Arrangements specially adapted for dry cleaning or laundry dryer related applications
• CPC Class Codes: C11D 3/001 Softening compositions
• CPC Class Codes: C11D 3/0021 Dye-stain or dye-transfer inhibiting compositions
• CPC Class Codes: C11D 3/505 encapsulated or adsorbed on a carrier, e.g. zeolite or clay

Abstract

A multifunctional laundry sheet that comprises, and combines the benefits of, a color catcher, a fabric softener, and a fragrance is disclosed. The color catcher absorbs or traps loose dye in wash liquor during a typical wash cycle of a washing machine, thereby preventing the re-deposition of the dye to fabrics being washed therein, while the fabric softener enhances the appearance of fabrics during a typical drying cycle of an automatic dryer by decreasing static cling, increasing softness and fluffiness, or decreasing wrinkles, of the fabrics. Preferably, at least a portion of the catcher remains associated with the laundry sheet during the washing and imparts visual color change to the laundry sheet after the color catcher is affiliated with loose colorants in the laundry bath. It is also preferable that at least a portion of the fabric softener remains associated with the laundry sheet during the washing process so that the laundry sheet can be further used in a drying process to impart fabric conditioning benefits to the fabrics.

Claims

1. A multifunctional laundry sheet comprising:

a support matrix;

a color catcher;

a fabric softener; and

a fragrance,

wherein the color catcher, fabric softener and fragrance are incorporated in the support matrix.

2. The laundry sheet of claim 1 wherein the color catcher has a high binding affinity to loose colorants in a laundry bath.

3. The laundry sheet of claim 1 wherein at least a portion of the fabric softener remains associated with the laundry sheet during a washing process.

4. The laundry sheet of claim 1 wherein the color catcher is selected from the group consisting of functionalized ammonium salts, polyamphoterics, quaternized starches, quarternized proteins, chitin, chitosan, polyvinyl amine, polyethylene imine, and mixtures thereof.

5. The laundry sheet of claim 1 wherein the color catcher is selected from the group consisting of hydroxyl haloalkyl quaternary ammonium salts, epoxy propyl quaternary ammonium salts, polyquaternary ammonium salts, choline chloride, and mixtures thereof.

6. The laundry sheet of claim 1 wherein the color catcher is selected from the group consisting of 2-hydroxy-3-chloropropyl trimethyl ammonium chloride, epoxypropyl trimethyl ammonium chloride, and a mixture of both.

7. The laundry sheet of claim 1 wherein the color catcher is present in an amount of about 10 to about 200 g per square meter of the support matrix.

8. The laundry sheet of claim 1 wherein the fabric softener is selected from the group consisting of cationic, anionic, nonionic, and amphoteric fabric conditioning compounds.

9. The laundry sheet of claim 1 wherein the fabric softener comprises a cationic nitrogen-containing compound selected from the group consisting of quaternary ammonium salts containing a C12-20 alkyl group, substituted immidazolium salts, substituted pyridinium salts, substituted morpholinium salts, and mixtures thereof.

10. The laundry sheet of claim 1 wherein the fabric softener is present in an amount of from about 10 to about 200 g per square meter of the support matrix.

11. The laundry sheet of claim 1 wherein the fragrance is present in an amount of from about 0.5 to about 10% by weight of the fabric softener composition.

12. The laundry sheet of claim 1 wherein the support matrix comprises a fiber material selected from the group consisting of cellulosics, synthetic polymers, and a mixture thereof.

13. A multifunctional laundry sheet comprising:

a support matrix;

a color catcher;

a fabric softener; and

a fragrance,

wherein the color catcher, fabric softener and fragrance are incorporated in the support matrix, and

wherein at least a portion of the color catcher remains associated with the laundry sheet during a washing process and imparts a visual color change to the laundry sheet after the color catcher is affiliated with loose colorants in a laundry bath.

14. The laundry sheet of claim 13 wherein at least a portion of the fabric softener remains associated with the laundry sheet during a washing process.

15. The laundry sheet of claim 13 wherein the color catcher is selected from the group consisting of functionalized ammonium salts, polyamphoterics, quaternized starches, quarternized proteins, chitin, chitosan, polyvinyl amine, polyethylene imine, and mixtures thereof.

16. The laundry sheet of claim 13 wherein the color catcher is selected from the group consisting of 2-hydroxy-3-chloropropyl trimethyl ammonium chloride, epoxypropyl trimethyl ammonium chloride, and a mixture of both.

17. The laundry sheet of claim 13 wherein the color catcher is present in an amount of about 15 to about 25 g per square meter of the support matrix.

18. The laundry sheet of claim 13 wherein the fabric softener comprises a cationic nitrogen-containing compound selected from the group consisting of quaternary ammonium salts containing a C12-20 alkyl group, substituted imidazolium salts, substituted pyridinium salts, substituted morpholinium salts, and mixtures thereof.

19. The laundry sheet of claim 13 wherein the fabric softener is present in an amount of from about 30 to about 90 g per square meter of the support matrix.

20. A method of using a multifunctional laundry sheet in a laundering process comprising:

providing a laundry bath;

providing at least one laundry item in the laundry bath;

depositing a multifunctional laundry sheet in the laundry bath, the laundry sheet comprising a support matrix, and a color catcher and a fabric softener incorporated in the support matrix; and

washing the laundry item in the laundry bath,

wherein at least a portion of the catcher remains associated with the laundry sheet during the washing and imparts visual color change to the laundry sheet after the color catcher is affiliated with loose colorants in the laundry bath, and

wherein at least a portion of the fabric softener remains associated with the laundry sheet during the washing.