DISSOLVABLE FILM WITH DETECTION FUNTIONALITY

• US 20100285604A1
• Filed: 06/30/2008
• Published: 11/11/2010
• Est. Priority Date: 07/05/2007
• Status: Abandoned Application

• Current Assignee: Dow Global Technologies LLC (Dow, Inc.)
• Original Assignee: Dow Global Technologies LLC (Dow, Inc.)
• Inventors: Schmitt, Robert L., Back, Darlene M., Luong, Michael Minh, Jurman, Kathleen Ann, Busby, Molly I-Chin
• Application Number:
  US12/665,481
• Publication Number:
  US 20100285604A1
• Time in Patent Office: Days
• US Class Current: 436/163
• CPC Class Codes: A61K 2800/222 Effervescent
• CPC Class Codes: A61K 2800/45 Colour indicators, e.g. pH- or Redox indicators
• CPC Class Codes: A61K 8/0216 Solid or semisolid forms
• CPC Class Codes: A61K 8/49 containing heterocyclic compounds
• CPC Class Codes: A61K 8/731 Cellulose; Quaternized cellulose derivatives
• CPC Class Codes: A61K 8/86 Polyethers
• CPC Class Codes: A61Q 19/00 Preparations for care of the skin
• CPC Class Codes: C08J 2301/26 Cellulose ethers
• CPC Class Codes: C08J 2301/28 Alkyl ethers
• CPC Class Codes: C08J 2371/02 Polyalkylene oxides
• CPC Class Codes: C08J 5/18 Manufacture of films or sheets

Abstract

Provided are films having a visual cue agent present in a sufficient amount to present a visual cue when the film is contacted by an aqueous solution, and methods of detecting when a film is contacted by an aqueous solution.

Claims

1. A film, comprising:

a polymer, comprising at least one of;

a) a cellulose ether based polymer, provided that when the cellulose ether based polymer is methylcellulose, hydroxypropyl methylcellulose, or a blend thereof, the cellulose ether based polymer comprises at least 19% by weight of the film;

or

b) a polyoxyethylene polymer;

at least one of a fragrance, surfactant, cleaning solvent, chelant, builder, foam booster, hydrotrope, abrasive, acid, alkali agent, buffer, functional polymer, ionic strength additive, anti-redeposition agent, antimicrobial, or biocide; and

a visual cue agent present in a sufficient amount to present a visual cue when the film is contacted by an aqueous solution.

2. The film of claim 1, wherein the visual cue agent presents color change or effervescence.

3. The film of claim 1, wherein a plurality of visual cue agents are present, and the film displays color change and effervescence when contacted by an aqueous solution.

4. The film of claim 1, wherein the visual cue agent is a color change agent.

5. The film of claim 4, wherein the color change agent is a pH indicator, photoactive pigment, thermochromatic pigment, or suppressed pigment.

6. The film of claim 4, wherein the color change agent is bromocresol green.

7. The film of claim 4, wherein the visual cue is that the film changes from red to blue, red to yellow, yellow to blue yellow to red, yellow to green, blue to red, from colorless to a color, or from a color to colorless.

8. The film of claim 4, wherein the visual cue agent is present in an amount from about 0.01% to about 0.5% by weight of the film.

9. The film of claim 4, further comprising at least 5% water by weight of the film.

10. The film of claim 1, wherein the visual cue agent is an effervescent agent.

11. The film of claim 10, wherein the effervescent agent is a gas emitting salt in the presence of an acid, peroxide precursor, percarbonate, or perborate.

12. The film of claim 10, wherein the effervescent agent is sodium bicarbonate in the presence of citric acid.

13. The film of claim 10, wherein the visual cue agent is present in an amount from about 1% to about 80% by weight of the film.

14. The film of claim 1, wherein the polymer is cellulose ether based polymer and is at least one of methylcellulose, hydroxypropyl methylcellulose, ethylcellulose, hydroxyethyl cellulose, cationic hydroxyethyl cellulose, hydrophobically modified hydroxyethyl cellulose, or cationic hydrophobically modified hydroxyethyl cellulose.

15. The film of claim 1, wherein the polymer is cellulose ether based polymer and includes at least one of methylcellulose or hydroxypropyl methylcellulose.

16. The film of claim 1, wherein the polymer is polyoxyethylene in an amount from about 10% to about 70% by weight of the film.

17. The film of claim 1, wherein the film further comprises additional polymers, including at least one of starch, gelatin, pullan, or polyacrylimide.

21. The film of claim 2, wherein the film is a cleaning film or an aromatherapy film.

18-19. -19. (canceled)

20. A method of detecting when a film is contacted by an aqueous solution, comprising:

providing a visual cue agent in the film present in a sufficient amount to present a visual cue when the film is contacted by an aqueous solution.