LIQUID CONCENTRATE FOR PRESERVATION

Abstract

The invention relates to a composition, which comprises: a)—From 15 weight % to 25 weight % of 1,2-octanediol, b)—From 15 weight % to 25 weight % of benzoic acid, c)—From 50 weight % to 70 weight % of propylene glycol, wherein the content of aromatic alcohol is less or equal to 5 weight % relative to the weight of the liquid concentrate; its use of a composition, for the preservation of cosmetics products, household products or technical products.

Claims

1. A liquid concentrate comprising: a) from 15 weight % to 25 weight % of 1,2-octanediol; b) from 15 weight % to 25 weight % of benzoic acid; and c) from 50 weight % to 70 weight % of propylene glycol; wherein a content of aromatic alcohol is less or equal to 5 weight % relative to the weight of the liquid concentrate.

2. The liquid concentrate according to claim 1, which is free from aromatic alcohol.

3. The liquid concentrate according to claim 1, which is free from water.

4. The liquid concentrate according to claim 1, wherein the weight ratio 1,2-octane-diol/benzoic acid is equal to 1.

5. The liquid concentrate according to claim 1, wherein the weight ratio 1,2-octane-diol/propylene glycol is greater or equal to 0.2 and less or equal to 0.5.

6. The liquid concentrate according to claim 1, wherein the weight ratio benzoic acid/propylene glycol is greater or equal to 0.2 and less or equal to 0.5.

7. The liquid concentrate according to claim 1, which consists of, for 100% of its weight: a) from 15 weight % to 25 weight % of 1,2-octanediol; b) from 15 weight % to 25 weight % of benzoic acid; and c) from 50 weight % to 70 weight % of propylene glycol.

8. The liquid concentrate according to claim 7, wherein the weight ratio 1,2-octane-diol/benzoic acid is equal to 1.

9. The liquid concentrate according to claim 1, comprising: a) 20 weight % of 1,2-octanediol; b) 20 weight % of benzoic acid; and c) 60 weight % of propylene glycol.

10. A method of using the liquid concentrate according to claim 1 as a disinfectant or preservative, the method comprising adding an efficient amount of the liquid concentrate to cosmetics products, household products, or technical products for the purpose of disinfecting or preserving the cosmetics products, household products, or technical products.

11. The method of claim 10 wherein the liquid concentrate is added to wet wipes for the preservation of the wet wipes.

13. The method of claim 10 wherein the composition is added to the cosmetics products, household products, or technical products during the preparation of the cosmetics products, household products, or technical products.

14. A liquid concentrate comprising: a) from 15 weight % to 25 weight % of 1,2-octanediol; b) from 15 weight % to 25 weight % of benzoic acid; and c) from 50 weight % to 70 weight % of propylene glycol; wherein a content of aromatic alcohol is less or equal to 5 weight % relative to the weight of the liquid concentrate, and wherein the weight ratio 1,2-octanediol/propylene glycol is greater or equal to 0.2 and less or equal to 0.5.

Description

[0013] In a first aspect, the invention therefore relates to a composition, which comprises:

[0014] a)—From 15 weight % to 25 weight % of 1,2-octanediol,

[0015] b)—From 15 weight % to 25 weight % of benzoic acid,

[0016] c)—From 50 weight % to 70 weight % of propylene glycol,

wherein the content of aromatic alcohol is less or equal to 5 weight % relative to the weight of the liquid concentrate.

[0017] According to a particular embodiment, the composition as hereinbefore defined, is free from aromatic alcohol.

[0018] In the context of the invention, aromatic alcohols mainly mean alcohols, such as phenoxyethanol, phenoxypropanol, phenethyl alcohol, phenyl propanol and benzylic alcohol, and which are commonly used in the formulation of cosmetics products, household products or technical products.

[0019] According to another particular embodiment, the composition as hereinbefore defined, is free from water.

[0020] According to another particular embodiment, the invention relates to a composition as hereinbefore defined, wherein the weight ratio 1,2-octanediol/benzoic acid is equal to 1.

[0021] According to other particular embodiments, the invention relates to a composition as hereinbefore defined, wherein the weight ratio 1,2-octanediol/propylene glycol is greater or equal to 0.2 and less or equal to 0.5; and/or to a composition as hereinbefore defined, wherein the weight ratio benzoic acid/propylene glycol is greater or equal to 0.2 and less or equal to 0.5.

[0022] According to a more specific embodiment, the invention relates to a composition as hereinbefore defined, which consists in, for 100% of its weight:

[0023] a)—From 15 weight % to 25 weight % of 1,2-octanediol,

[0024] b)—From 15 weight % to 25 weight % of benzoic acid, and

[0025] c)—From 50 weight % to 70 weight % of propylene glycol.

[0026] According to a very specific embodiment of this more specific embodiment, the composition as hereinbefore defined, is characterized by a weight ratio 1,2-octane-diol/benzoic acid equal to 1; and said composition more specifically consists in, for 100% of its weight:

[0027] a)—20 weight % of 1,2-octanediol,

[0028] b)—20 weight % of benzoic acid, and

[0029] c)—60 weight % of propylene glycol.

[0030] The invention also relates to the use of a composition as hereinbefore defined, for the preservation of cosmetics products, household products or technical products and/or as a disinfectant.

[0031] According to a preferred embodiment, the invention relates to the use of a composition as hereinbefore defined for the preservation of wet wipes.

[0032] The invention also relates to a method to preserve cosmetics products, household products or technical products, characterized in that an efficient amount of a composition as hereinbefore defined, is added in the mixture of the constituents of said cosmetics products, household products or technical products, during the preparation of said cosmetics products, household products or technical products, such as a wet wipe.

[0033] In the context of the invention, an efficient amount approximatively means a weight proportion of approximately from 0.05 wt. % to 3% wt. % of said cosmetics products, household products or technical products.

Germ Count Reduction Test

[0034] The following concentrates were produced (composition given in wt. %, Table 1 a):

TABLE-US-00001 TABLE 1a Composition I II III Benzoic acid 20.00 0.00 20.00 1,2-octanediol 0.00 20.00 20.00 Propyleneglycol 80.00 80.00 60.00

[0035] The following organisms were tested:

TABLE-US-00002 TABLE 1b Species Staphylococcus aureus ATCC no 6538 Escherichia coli ATCC no11229 Pseudomonas aeruginosa ATCC no 15442

[0036] Dilutions of the concentrates are prepared at a concentration of 1 wt. %, in demineralized water and and adjusted to pH=5.0 for Staphylococcus aureus and Escherichia coli and to pH=5.5 for Pseudomonas aeruginosa.

[0037] 24-hour CASO (casein peptone-soybean flour peptone solution) cultures are prepared from 24-hour tryptone-soy agar (TSA) cultures of Staphylococcus aureus, Escherichia coli and Pseudomonas aeruginosa. Incubation takes place at 30° C. (TSA) and (CASO) 37° C.

[0038] 25 cm.sup.3 of the end solutions are each inoculated with 0.1 cm.sup.3 of microorganism suspensions (initial microorganism count: approximatively 10.sup.9cfu/ml).

[0039] The solutions are streaked out onto TSA after 3, 6, 24 and 48 hours. The cultures are incubated for 48 hours at 37° C.

[0040] The evaluation of the microbioloical growth of the streaks is made semi-quantitatively.

[0041] The results are found in the following table 1c

TABLE-US-00003 TABLE 1c Test microorganism 3 h 6 h 24 h 48 h Staphylococcus aureus Water C C C C I C C C C II ++++ +++ ++ + III ++++ ++++ − − Escherichia coli Water C C C C I C C C C II C +++ − − III ++++ + − − Pseudomonas aeruginosa Water C C C C I C C C C II C C C C III ++++ + − − Symbol Finding Germ count/ml − No growth <100 + Slight growth Around 10.sup.2 ++ Moderate growth Around 10.sup.3 +++ Heavy growth Around 10.sup.4 ++++ Massive growth Around 10.sup.5 C Surface covered Around 10.sup.6

[0042] The experimental results show that the combination of benzoic acid and 1,2-octanediol in propylene glycol, exhibits an antimicrobial activity with a faster efficacy than benzoic acid alone or 1,2-octanediol alone in the same solvent. The use of propyleneglycol as a solvent provides the usability in water-free systems. This concentrate is a clear solution that is user compliant and also storage-stable.