Aqueous compositions containing a hydrophobic material

• US 20100260691A1
• Filed: 05/11/2007
• Published: 10/14/2010
• Est. Priority Date: 07/31/2006
• Status: Abandoned Application

• Current Assignee: ISP Investments, Inc. (Ashland Global Holdings, Inc.)
• Original Assignee: ISP Investments, Inc. (Ashland Global Holdings, Inc.)
• Inventors: Jon, Domingo, Winkowski, Karen, Patel, Jayanti, Narayanan, Kolazi S.
• Application Number:
  US11/803,108
• Publication Number:
  US 20100260691A1
• Time in Patent Office: Days
• US Class Current: 424/49
• CPC Class Codes: A01N 25/04 Dispersions, emulsions, suspoemulsions, suspension concentrates or gels foams A01N25/16
• CPC Class Codes: A01N 31/08 Oxygen or sulfur directly attached to an aromatic ring system
• CPC Class Codes: A01N 31/14 Ethers
• CPC Class Codes: A01N 31/16 with two or more oxygen or sulfur atoms directly attached to the same aromatic ring system
• CPC Class Codes: A01N 47/12 containing a —O—CO—N< group, or a thio analogue thereof, neither directly attached to a ring nor the nitrogen atom being a member of a heterocyclic ring
• CPC Class Codes: A01N 47/40 the carbon atom having a double or triple bond to nitrogen, e.g. cyanates, cyanamides
• CPC Class Codes: A01N 65/06 Coniferophyta [gymnosperms], e.g. cypress

Abstract

An aqueous composition containing a hydrophobic material, and, more particularly, a water soluble matrix of a water soluble polymer and a water soluble surfactant, in the form of a complex, for stabilizing the hydrophobic material, as a nanoparticulate dispersion or emulsion. A delivery system for delivering bioactive hydrophobic materials as an aqueous nanoparticle dispersion of a water soluble matrix of polymer and a surfactant.

Claims

1. An aqueous composition comprising an aqueous nanoparticle dispersion or emulsion of a hydrophobic material and a water soluble matrix of (a) a water soluble polymer, and (b) a water soluble surfactant wherein (a) and (b) interact to form a complex having a lower critical micelle concentration (cmc) than a control composition without the water soluble polymer.

2. An aqueous composition according to claim 1 wherein said composition is optically clear.

3. An aqueous composition according to claim 1 wherein the weight ratio of hydrophobic material to (a) is 1:

10 to 5;

0.5.

4. An aqueous composition according to claim 3 wherein said ratio is 1:

0.2 to 1;

2.

5. An aqueous composition according to claim 1 wherein the weight ratio of hydrophobic material to (b) is 1:

10 to 5;

1.

6. An aqueous composition according to claim 5 wherein said ratio is 1:

3 to 1;

5.

7. An aqueous composition according to claim 1 wherein the weight ratio of (a):

(b) is 20;

1 to 1;

20.

8. An aqueous composition according to claim 1 wherein said hydrophobic material comprises a bioactive material.

9. An aqueous composition according to claim 8 wherein said bioactive material comprises a water-insoluble organic compound selected from the group consisting of a biocide, fungicide, bactericide, insecticide, herbicide, algicide, disinfectant, light stabilizer, UV absorber, hydrocarbon, radical scavenger, synthetic resin, essential oil, natural wax compound and mixtures thereof.

10. An aqueous composition according to claim 9 wherein said bioactive material comprises a disinfectant selected from the group consisting of triclosan, chlorhexidine, iodopropargyl butyl carbamate (IPBC), orthophenyl phenol, parachlorometaxylenol (PCMX), parachloro ortho benzyl phenol, pine oil, mixed phenol disinfectants, mixed phenol, quats and mixtures thereof.

11. An aqueous composition according to claim 10 wherein said disinfectant is triclosan.

12. A use composition comprising the aqueous composition of claim 1 and water of dilution.

13. A use composition according to claim 12 wherein said hydrophobic material is present in an amount of 10 ppm to 40% by weight in said use composition.

14. A use composition according to claim 13 wherein said hydrophobic material is present in an amount of 0.05 to 0.5%.

15. A use composition according to claim 12 in which said hydrophobic mixture is present in a toothpaste or mouthwash.

16. A use composition according to claim 12 wherein said use composition further comprises one or more additives selected from the group consisting of flavors, colors, thickeners, defoamers, additional polymers.

17. A method for forming an aqueous composition containing a nanoemulsion or nanodispersion of a hydrophobic material comprising:

providing a water soluble matrix of (a) a water soluble polymer, and (b) a surfactant wherein (a) and (b) interact to form a complex having a lower critical micelle concentration (cmc) than a control composition without the water soluble polymer, and

combining said water soluble matrix with a hydrophobic material to form an aqueous composition containing a nanoemulsion or nanodispersion of the hydrophobic material.

18. A method according to claim 17 wherein said composition is optically clear.

19. A method according to claim 17 wherein the weight ratio of hydrophobic material to (a) is 1:

10 to 5;

0.5.

20. A method according to claim 19 wherein said ratio is 1:

0.2 to 1;

2.

21. A solid composition comprising a hydrophobic material and a water soluble matrix of (a) a water soluble polymer, and (b) a water soluble surfactant wherein (a) and (b) interact to form a complex having a lower critical micelle concentration (cmc) than a control composition without the water soluble polymer.