Mixture of natural or nature-identical alcohols with improved effectiveness
Disclosed is an antimicrobial composition that includes a) one or more C3 to C5 alkane dioles-1,3, b) one or more aromatic alcohols and c) one or more C8 to C14 alkanols. A preferred component a) is propane diol-1,3. Preferred components b) are phenoxyethanol and phenethyl alcohol. A preferred component c) is undecanol-1. Optionally, an antioxidant c) is present, which is preferably Vitamin E. In a preferred embodiment the composition is a concentrate and is suitable for the antimicrobial finishing of dermatological, cosmetic and pharmaceutical products.
1. An antimicrobial composition in the form of a concentrate, which comprises:
a) 20 to 80% by weight of 1,3-propanediol,
b) 10 to 55% by weight of phenethyl alcohol and
c) 2 to 40% by weight of 1-undecanol.
2. The antimicrobial composition in the form of a concentrate according to claim 1 , which comprises:
a) 30 to 70% by weight of 1,3-propanediol,
b) 20 to 50% by weight of phenethyl alcohol and
c) 3 to 30% by weight of 1-undecanol.
3. The antimicrobial composition in the form of a concentrate according to claim 2 , which comprises:
a) 40 to 60% by weight of 1,3-propanediol,
b) 25 to 45% by weight of phenethyl alcohol and
c) 5 to 25% by weight of 1-undecanol.
4. The antimicrobial composition in the form of a concentrate according to claim 1 , which further comprises 5-1000 ppm of alpha-tocopherol (vitamin E).
5. The antimicrobial composition in the form of a concentrate according to claim 2 , which further comprises 5-1000 ppm of alpha-tocopherol (vitamin E).
6. The antimicrobial composition in the form of a concentrate according to claim 3 , which further comprises 5-1000 ppm of alpha-tocopherol (vitamin E).
7. A method for preserving dermatological, cosmetic or pharmaceutical products, comprising
treating said dermatological, cosmetic or pharmaceutical products with the antimicrobial composition in the form of a concentrate according to claim 1 .