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EP-4735565-A1 - LIQUID CONDITIONING COMPOSITIONS COMPRISING CHITOSAN

EP4735565A1EP 4735565 A1EP4735565 A1EP 4735565A1EP-4735565-A1

Abstract

A liquid conditioning composition that includes from 2% to 8%, by weight of the composition, of an alkyl ester quaternary ammonium softening active, from 0.0001% to about 0.025%, by weight of the composition, of chitosan, and from 0.01 to about 5%, by weight of the composition, of free perfume oil, wherein the composition has a viscosity of about 80 to about 300 cPs. Method of treating a surface comprising the step of contacting the surface, preferably a fabric, more preferably a fabric comprising cotton fibers, with the liquid conditioning composition, optionally in the presence of water. Use of the liquid conditioning composition to soften a fabric.

Inventors

  • KEIJZER, Olav, Pieter Dora Tony
  • ORLANDINI, LAURA
  • SAVEYN, Pieter, Jan Maria
  • LEBRON, ARIEL
  • SUN, YIPING
  • GUIDA, VINCENZO
  • SMETS, JOHAN
  • ELBOUSAKSAKI, Rachide

Assignees

  • The Procter & Gamble Company

Dates

Publication Date
20260506
Application Date
20240606

Claims (14)

  1. 1. A liquid conditioning composition comprising: from 2% to 8%, by weight of the composition, of an alkyl ester quaternary ammonium softening active, from 0.0001% to 0.025%, by weight of the composition, of chitosan, and from 0.01 to 5%, by weight of the composition, of free perfume oil, wherein the composition has a viscosity of 80 to 300 cPs.
  2. 2. The liquid conditioning composition of Claim 1, further comprising perfume encapsulates.
  3. 3. The liquid conditioning composition according to any preceding claim, where the perfume encapsulates are present in the composition in an amount of between 0.05% and 5%, by weight of the composition.
  4. 4. The liquid conditioning composition of Claims 2 or 3, wherein the perfume encapsulates are characterized by a volume-weighted medial particle size from 1 to 100 microns.
  5. 5. The liquid conditioning composition of Claim 2 through 4, wherein the perfume encapsulates are coated with a deposition aid, a cationic polymer, a non-ionic polymer, an anionic polymer, or mixtures thereof.
  6. 6. The liquid conditioning composition according to any preceding claim, wherein the composition comprises from 3% to 7%, or more preferably 3% to 6%, by weight of the composition, of alkyl ester quaternary ammonium softening active.
  7. 7. The liquid conditioning composition according to any preceding claim, wherein the composition comprises from 0.05% to 4%, or more preferably from 0.1% to 3%, or more preferably 0.5% to 2%, by weight of the compositions, of free perfume oil.
  8. 8. The liquid conditioning composition according to any preceding claim, wherein the composition comprises from 0.001% to 0.02%, or more preferably from 0.0015% to 0.015%, or more preferably from 0.002% to 0.01%, by weight of the composition, of chitosan.
  9. 9. The liquid conditioning composition according to any preceding claim, wherein the composition has a viscosity of 90 to 250 cPs, or more preferably 150 to 250 cPs.
  10. 10. The liquid conditioning composition according to any preceding claim, wherein the liquid conditioning composition further comprises a treatment adjunct selected from the group consisting of: additional conditioning agents, dyes, pH control agents, solvents, rheology modifiers, structurants, cationic polymers, surfactants, perfume, perfume delivery systems, chelants, antioxidants, preservatives, or mixtures thereof; wherein the perfume delivery system, if present, preferably comprises core-shell encapsulates.
  11. 11. The liquid conditioning composition according to any preceding claim, wherein the liquid conditioning composition comprises between 0.05% and 2%, preferably less than 2%, preferably less than 1%, even more preferably less than 0.6% of a rheology modifier, a structurant, or a mixture thereof.
  12. 12. The liquid conditioning composition according to any preceding claim, wherein the liquid conditioning composition comprises an antioxidant, preferably a phenolic antioxidant, more preferably a tocopherol or a derivative thereof.
  13. 13. A method of treating a surface, the method comprising the step of contacting a surface, preferably a fabric, more preferably a fabric comprising cotton fibers, with a liquid conditioning composition according to any preceding claim, optionally in the presence of water.
  14. 14. Use of a liquid conditioning composition according to any preceding claim to soften a fabric.

Description

LIQUID CONDITIONING COMPOSITIONS COMPRISING CHITOSAN FIELD OF THE INVENTION The present disclosure relates to liquid conditioning compositions that include chitosan. The present disclosure also relates to methods and uses of liquid conditioning compositions that include chitosan. BACKGROUND OF THE INVENTION Manufacturers and consumers alike desire liquid conditioning compositions that have a desirable Neat Product Odor (NPO). When shopping, it is common for consumers to open the bottles on the supermarket shelf, to smell the product, and choose what they want to buy based on the odor of the product. Consumers also desire products with a thick consistency as high viscosity conveys a luxurious usage experience and better performance. Unfortunately, those traits of a desirable liquid conditioning composition - good NPO and high viscosity - are not mutually exclusive, as a higher viscosity in the finished product can negatively impact the release of the free perfume and therefore decrease the NPO of the product. Accordingly, it is of continued interest to find new and useful liquid conditioning products with a desirable NPO, as well as a thick consistency. SUMMARY OF THE INVENTION The present disclosure relates to liquid conditioning compositions, such as liquid fabric enhancers, that include certain amounts of chitosan. As a nonlimiting example, the present disclosure relates to a liquid conditioning composition comprising from about 2% to about 8%, by weight of the composition, of an alkyl ester quaternary ammonium (“ester quat”) softening active; from 0.0001% to about 0.025%, by weight of the composition, of chitosan; and from 0.01 to about 5%, by weight of the composition, of free perfume oil; wherein the composition has a viscosity of about 80 to about 300 cPs. The present disclosure also relates to methods of treating a surface, where the method includes the step of contacting a surface, preferably a fabric, more preferably a fabric comprising cotton fibers, with a liquid conditioning composition according to the present disclosure, optionally in the presence of water. The present disclosure also relates to a concentrated softening active composition that may be used to make the liquid conditioning compositions of the present disclosure, where the concentrated softening active composition includes from about 0.0001% to about 0.025%, by weight of the composition, of chitosan, as described herein; and a liquid carrier selected from the group consisting of water, surfactant, or organic solvent. The present disclosure also relates to the use of chitosan, preferably as part of a liquid conditioning composition, to provide Neat Product Odor (NPO) benefits, where the chitosan has a weight average molecular weight (Mw) of about 70 kDa to about 600 kDa. DETAILED DESCRIPTION OF THE DRAWINGS FIG. l is a photograph of an exemplary liquid fabric conditioner sample that exhibits a Failure Level 1 assessment score using the Method to Assess the Phase Stability of LFE Products, as detailed herein; FIG. 2 is a photograph of an exemplary liquid fabric conditioner sample that exhibits a Failure Level 2 assessment score using the Method to Assess the Phase Stability of LFE Products, as detailed herein; FIG. 3 is a photograph of an exemplary liquid fabric conditioner sample that exhibits a Failure Level 3 assessment score using the Method to Assess the Phase Stability of LFE Products, as detailed herein; FIG. 4 is a photograph of an exemplary liquid fabric conditioner sample that exhibits a Failure Level 4 assessment score using the Method to Assess the Phase Stability of LFE Products, as detailed herein; FIG. 5 is a photograph of an exemplary liquid fabric conditioner sample that exhibits a Failure Level 5 assessment score using the Method to Assess the Phase Stability of LFE Products, as detailed herein; FIG. 6 is a chart detailing Neat Product Odor Headspace values for liquid fabric conditioner samples; and FIG. 7 is a photograph of an aged commercially available liquid fabric enhancer product with chitosan added. DETAILED DESCRIPTION OF THE INVENTION The present disclosure relates to liquid conditioning compositions, such as liquid fabric enhancers, that include certain amounts of chitosan. It has been surprisingly found that the addition of chitosan to the liquid conditioning compositions enables an improved release of perfumes, and therefore an increased NPO. The materials, compositions, processes, and uses of such liquid conditioning compositions are described in more detail below. As used herein, the articles “a” and “an” when used in a claim, are understood to mean one or more of what is claimed or described. As used herein, the terms “include,” “includes,” and “including” are meant to be non-limiting. The compositions of the present disclosure can comprise, consist essentially of, or consist of, the components of the present disclosure. The terms “substantially free of’ or “substantially free from” may be used