Low pH fabric care compositions

Patent metadata

Field	Value
Publication number	US-11072768-B2
Application number	US-201916673997-A
Country	US
Kind code	B2
Filing date	Nov 5, 2019
Priority date	Nov 7, 2018
Publication date	Jul 27, 2021
Grant date	Jul 27, 2021

Abstract

Liquid fabric care compositions that includes vinegar and/or acetic acid; fragrance materials; and water; where the fragrance materials are characterized by a log P of less than about 2.5; and where the fabric care composition is characterized by an acidic pH. Related processes of making and using such compositions.

First claim

What is claimed is:

1. A liquid fabric care composition comprising:
from about 0.1% to about 20% vinegar, by weight of fabric care composition,
from about 10% to about 40% of a second organic acid, by weight of the fabric care composition,
wherein the second organic acid is selected from the group consisting of citric acid, lactic acid, adipic acid, aspartic acid, carboxymethyloxymalonic acid, carboxymethyloxysuccinic acid, glutaric acid, hydroxyethlyliminodiacetic acid, iminodiactic acid, maleic acid, malic acid, malonic acid, oxydiacetic acid, oxydisuccinic acid, succinic acid, sulfamic acid, tartaric acid, tartaric-discuccinic acid, tartaric-monosuccinic acid, or mixtures thereof,

from about 0.1% to about 20% fragrance materials, by weight of the fabric care composition,
wherein the fragrance materials are characterized by a logP of less than about 2.5; and

at least about 30% water, by weight of the fabric care composition;
wherein the fabric care composition is characterized by a neat pH of from about 1 to about 6; and
wherein the fabric care composition is substantially free of detersive surfactant, bleaching systems, and fabric softening materials,
wherein the detersive surfactant is selected from the group consisting of anionic surfactants, nonionic surfactants, amphoteric surfactants, zwitterionic surfactants, and combinations thereof,
wherein the bleaching systems are selected from the group consisting of peroxide bleaches, hypohalite bleaches, bleach activators, bleach catalysts, and combinations thereof, and
wherein the fabric softening materials are selected from the group consisting of quaternary ammonium ester compounds, silicones, non-ester quaternary ammonium compounds, amines, fatty esters, sucrose esters, silicones, dispersible polyolefins, polysaccharides, fatty acids, softening or conditioning oils, polymer latexes, and combinations thereof.

2. A composition according to claim 1 , wherein the composition comprises from about 0.1% to about 10% vinegar, by weight of the composition.

3. A composition according to claim 1 , wherein the second organic acid is citric acid.

4. A composition according to claim 1 , wherein the fragrance materials comprise a plurality of materials, wherein at least about 60%, by weight of the plurality of materials, are characterized by logP of no greater than about 2.5.

5. A composition according to claim 1 , wherein the composition is characterized by a viscosity of from about from about 1 to about 200 cps, as determined by rotational viscometry using a Brookfield viscometer and ASTM D 2196-99 at 60 RPM and 22° C.

6. A composition according to claim 1 , wherein the composition is characterized by a percent transmittance (% T) of at least about 60% of light using a 1 centimeter cuvette, at a wavelength of about 410-800 nanometers when the composition is substantially free of dyes.

7. An aqueous liquid fabric treatment composition comprising
an organic acid system,
the organic acid system comprising acetic acid and a second organic acid, wherein the second organic acid is present at a level of from about 10% to about 40%, by weight of the fabric care composition, wherein the second organic acid is selected from the group consisting of citric acid, lactic acid, adipic acid, aspartic acid, carboxymethyloxymalonic acid, carboxymethyloxysuccinic acid, glutaric acid, hydroxyethlyliminodiacetic acid, iminodiactic acid, maleic acid, malic acid, malonic acid, oxydiacetic acid, oxydisuccinic acid, succinic acid, sulfamic acid, tartaric acid, tartaric-discuccinic acid, tartaric-monosuccinic acid, or mixtures thereof;

fragrance material,
wherein the fragrance material is characterized by a logP of no greater than 2.5;

wherein the fabric care composition is characterized by a neat pH of from about 1 to about 6; and
wherein the composition is substantially free of detersive surfactant, bleaching systems, and fabric softening materials.

8. A composition according to claim 7 , wherein the acetic acid is present at a level of from about 0.05% to about 5%, by weight of the composition.

9. A composition according to claim 7 , wherein the second organic acid is citric acid.

10. A composition according to claim 7 , wherein the composition comprises acetic acid and the second organic acid in a weight ratio of from about 1:300 to about 1:1.

11. A composition according to claim 7 , wherein the composition is characterized by a pH of from about 1.5 to about 5.

12. A composition according to claim 7 , wherein the composition is characterized by Reserve Acidity to pH 4.0 of at least about 1.

13. A composition according to claim 7 , wherein the composition comprises at least about 50% water.

14. A composition according to claim 7 , wherein at least about 50%, by weight of the fragrance materials, of the fragrance materials are naturally derived fragrance materials.

15. A composition according to claim 7 , wherein the fragrance materials comprise a fruit extract, the fruit extract comprising lemon extract.

16. A composition according to claim 7 , wherein the fragrance materials comprise an herbal extract selected from the group consisting of lavender extract, rosemary extract, thyme extract, basil extract, and mixtures thereof.

17. A process of making a liquid fabric care composition, the process comprising the steps of:
providing an aqueous base;
combining vinegar with the aqueous base;
combining fragrance materials with the aqueous base, wherein the fragrance materials, as added to the aqueous base, are characterized by a logP of no greater than 2.5;
wherein the resulting liquid fabric care composition is characterized by a neat pH of from about 1 to about 6,
wherein the resulting liquid fabric care composition further comprises from about 10% to about 40% of a second organic acid, by weight of the fabric care composition,
wherein the second organic acid is selected from the group consisting of citric acid, lactic acid, adipic acid, aspartic acid, carboxymethyloxymalonic acid, carboxymethyloxysuccinic acid, glutaric acid, hydroxyethlyliminodiacetic acid, iminodiactic acid, maleic acid, malic acid, malonic acid, oxydiacetic acid, oxydisuccinic acid, succinic acid, sulfamic acid, tartaric acid, tartaric-discuccinic acid, tartaric-monosuccinic acid, or mixtures thereof,

wherein the resulting liquid fabric care composition is substantially free of detersive surfactant, bleaching systems, and fabric softening materials, and wherein the composition is characterized by a percent transmittance (% T) of at least about 60% of light using a 1 centimeter cuvette, at a wavelength of about 410-800 nanometers when the composition is substantially free of dyes.

18. A process according to claim 17 , wherein the fragrance materials are unemulsified when combined with the aqueous base.

Assignees

• Procter & Gamble

Inventors

• Delaney Sarah Ann
• Chaney Kevin Michael
• Porter Philip John
• Loughnane Brian Joseph

Classifications

• C11D3/50

  Perfumes · CPC title

• C11D7/261

  Alcohols; Phenols · CPC title

• C11D7/265 Primary

  Carboxylic acids or salts thereof · CPC title

• C11D3/2079 Primary

  Monocarboxylic acids-salts thereof · CPC title

• C11D7/5022 Primary

  containing oxygen · CPC title