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US-12622861-B2 - Stable wash composition

US12622861B2US 12622861 B2US12622861 B2US 12622861B2US-12622861-B2

Abstract

The invention is directed to a stable composition wash composition. The wash composition comprises a mixture of naturally derived and biodegradable sulfated polysaccharides. The wash composition has a viscosity of 40,000 cps or less, and surprisingly, is free of syneresis, discoloration and malodor, even after being stored at elevated temperatures.

Inventors

  • Douglas John HIBAN
  • Tirucherai Varahan Vasudevan

Assignees

  • CONOPCO, INC.

Dates

Publication Date
20260512
Application Date
20211108
Priority Date
20201113

Claims (19)

  1. 1 . A wash composition comprising: a) 0.4 to 1.3% by weight of a hydrocolloid mixture of sulfated polysaccharide; b) 6 to 20% by weight surfactant, the surfactant comprising an acyl isethionate, acyl taurate and betaine; c) 0.0 to 25% by weight polyol; and d) water, the wash composition having a viscosity of from 700 to 15,000 cps and the mixture of sulfated polysaccharide comprising lambda to iota carrageenan in a weight ratio from 1:1 to 1:7, the sulfated polysaccharide mixture being at least 50% by weight of a mixture of lambda and iota carrageenan based on total weight of the mixture of sulfated polysaccharide in the wash composition.
  2. 2 . The wash composition according to claim 1 , wherein the composition comprises lambda to iota carrageenan in a weight ratio from 1:1 to 1:6.
  3. 3 . The wash composition according to claim 1 , wherein the pH of the composition is from 4.8 to 7.5.
  4. 4 . The wash composition according to claim 1 , wherein the hydrocolloid mixture of sulfated polysaccharide consists of lambda and iota carrageenan in a weight ratio from 1:1 to 1:5.5.
  5. 5 . The wash composition according to claim 1 , wherein the hydrocolloid mixture of sulfated polysaccharide is free of kappa carrageenan.
  6. 6 . The wash composition according to claim 1 , wherein water makes up from 60 to 95% by weight of the composition.
  7. 7 . The wash composition according to claim 1 , wherein the composition comprises water soluble actives, oil soluble skin benefit agents or both.
  8. 8 . The wash composition according to claim 1 , wherein polyol makes up from 0.5 to 8% by weight of the composition.
  9. 9 . The wash composition according to claim 1 , wherein the hydrocolloid mixture of sulfated polysaccharide is at least 60% by weight a mixture of lambda and iota carrageenan based on total weight of sulfated polysaccharide in the wash composition.
  10. 10 . The wash composition according to claim 1 , wherein the hydrocolloid mixture of sulfated polysaccharide is from 80 to 95% by weight of a mixture of lambda and iota carrageenan based on total weight of sulfated polysaccharide in the wash composition.
  11. 11 . The wash composition according to claim 1 wherein the composition further comprises an omega-3 fatty acid, omega-6 fatty acid, climbazole, farnesol, ursolic acid, myristic acid, geranyl geraniol, oleyl betaine, cocoyl hydroxyethyl imidazoline, hexanoyl sphingosine, 12-hydroxystearic acid, petroselinic acid, conjugated linoleic acid, terpineol, thymol or a mixture thereof.
  12. 12 . The wash composition according to claim 1 wherein the composition further comprises iodopropynyl butyl carbamate, phenoxyethanol, hydroxyacetophenone, ethylhexylglycerine, hexylene glycol, imidazolidinyl urea, sodium dehydroacetate, sodium benzoate, benzyl alcohol, sodium dehydroacetate, chlorophenesin, decylene glycol, 1,2-octanediol, N-capryloyl glycine, N-undecylenoyl glycine or a mixture thereof.
  13. 13 . The wash composition according to claim 1 wherein the composition further comprises vitamin A, D, E, K, ethylhexylmethoxycinnamate, bis-ethylhexyloxyphenol methoxyphenol triazine, 2-ethylhexyl-2-cyano-3,3-diphenyl-2-propanoic acid, drometrizole trisiloxane, 3,3,5-trimethyl cyclohexyl 2-hydroxybenzoate, 2-ethylhexyl-2-hydroxybenzoate or 4-hexyl resorcinol, 4-phenylethyl resorcinol, 4-cyclopentyl resorcinol, 4-cyclohexyl resorcinol, 4-isopropyl resorcinol, 4-cyclohexyl-5-methylbenzene-1,3-diol, 4-isopropyl-5-methylbenzene-1,3-diol or a mixture thereof.
  14. 14 . The wash composition according to claim 1 wherein the composition further arginine, valine, histidine, vitamin B2, niacinamide, vitamin B6, vitamin C, ascorbyl tetraisopalmitate, magnesium ascorbyl phosphate, ascorbyl glycoside 4-ethyl resorcinol, sage, aloe vera, green tea, grapeseed, thyme, chamomile, yarrow, cucumber, liquorice, rosemary extract or a mixture thereof.
  15. 15 . The wash composition according to claim 1 wherein the acyl isethionate comprises sodium lauroyl isethionate, sodium cocoyl isethionate or both, and the acyl taurate comprises sodium methyl lauroyl taurate, sodium methyl cocoyl taurate or both and the betaine comprises cocamidopropyl betaine.
  16. 16 . The wash composition according to claim 15 wherein the wash composition further comprises sodium lauroyl glycinate, sodium cocoyl glycinate, sodium lauroyl glutamate, sodium cocoyl glutamate or a mixture thereof.
  17. 17 . The wash composition according to claim 15 wherein the wash composition further comprises 12-hydroxystearic acid, vitamin C, niacinamide, rosemary extract or a mixture thereof.
  18. 18 . The wash composition according to claim 15 wherein the wash composition further comprises a resorcinol, a retinoic acid precursor, or both.
  19. 19 . The wash composition according to claim 15 wherein the wash composition has a pH from 5.5 to 7.3, and further comprises thymol, terpineol or sunscreen.

Description

FIELD OF THE INVENTION The present invention is directed to a stable wash composition. More particularly, the invention is directed to a wash composition comprising water, surfactant and a mixture of naturally derived and biodegradable sulfated polysaccharides. The wash composition has a viscosity of 40,000 cps or less, and surprisingly, is free of syneresis, discoloration and malodor, even after being stored at elevated temperatures. BACKGROUND OF THE INVENTION Personal care compositions are typically employed to cleanse skin and to reduce shine associated with sebum produced in specialized epithelial cells known as sebocytes. They are also used to minimize bacteria on the hands and face such that washing is viewed as the most effective way to prevent the spread of germs and bacteria. In fact, experts believe that periodic washing throughout the day can reduce the number of consumers catching colds by about 50%. Consumers know it is generally good practice to regularly clean their hands and not touch their face in order to minimize the risk of getting sick. During epidemics, such as the one caused by ebola, and pandemics like those caused by influenza, cholera and HIV/AIDS, consumers are well aware that these serious infectious diseases are best defeated with regimens that include medical treatment, social distancing, the use of face masks and extensive hand washing. Information provided by the Centers for Disease Control and Prevention suggests that the COVID-19 (coronavirus) pandemic is a direct result of a virus that is more efficient and severe than influenza and that spreads rapidly from person to person via respiratory droplets. During such a pandemic, consumers know it is in their best interest to consistently wash their hands and face. With the need to wash more often, it is highly desirable to develop wash compositions that are not only good for the consumer but also safe for the environment. This invention, therefore, is directed to a stable wash composition comprising water, surfactant and a mixture of naturally derived and biodegradable sulfated polysaccharides. The wash composition has a viscosity of 40,000 cps or less, and is surprisingly free of syneresis, discoloration and malodor even after being stored at elevated temperatures. Additional Information Efforts have been disclosed for making wash compositions. In U.S. Patent Application No. 2019/008738A1, personal care compositions with cationic surfactant, nonionic surfactant and a polyacrylate cross-polymer structuring agent are described. The wash compositions can include carrageenan as a thickener. Other efforts have been described for making wash compositions. In U.S. Patent Application No. 2019/0359735A1, water soluble hybrid polymers suitable for use in a body wash are described. Still other efforts have been described for making wash compositions. In U.S. Pat. No. 6,444,629, personal cleansing compositions with good rinse feel and skin mildness are described. None of the additional information describes a composition with a mixture of biodegradable sulfated polysaccharides as claimed herein. SUMMARY OF THE INVENTION In a first aspect, the present invention is directed to a wash composition concentrate comprising: a) 0.5 to 3.0% by weight of a hydrocolloid mixture of sulfated polysaccharide;b) 1.5 to 50% by weight surfactant;c) 0.0 to 50% by weight polyol; andd) water,the wash composition concentrate being flowable and the mixture of sulfated polysaccharide comprising lambda to iota carrageenan in a weight ratio from 1:1 to 1:7, and preferably, from 1:1 to 1:6, and most preferably, from 1:1 to 1:5.5, the sulfated polysaccharide mixture being at least 50% by weight of a mixture of lambda and iota carrageenan based on total weight of the mixture of sulfated polysaccharide in the concentrate.In a second aspect, the present invention is directed to a wash composition comprising:a) 0.35 to 1.5% by weight of a hydrocolloid mixture of sulfated polysaccharide (at least 50% 70 80 90 lambda and iota of the total weight of the composition);b) 0.75 to 25% by weight surfactant;c) 0.0 to 25% by weight polyol; andd) water, the wash composition having a viscosity of 40,000 cps or less and the mixture of sulfated polysaccharide comprising lambda to iota carrageenan in a weight ratio from 1:1 to 1:7, and preferably, from 1:1 to 1:6, and most preferably, from 1.1 to 1:5.5, the sulfated polysaccharide mixture being at least 50% by weight of a mixture of lambda and iota carrageenan based on total weight of sulfated polysaccharide in the wash composition. In a third aspect, the present invention is directed to a method for washing with the wash composition of the second aspect of the invention. In a fourth aspect, the invention is directed to the use of a mixture of lambda and iota carrageenan to thicken and stabilize a wash composition. All other aspects of the present invention will more readily become apparent from the description and examples which fol