Liquid concentrate for the protection of compositions to be applied topically, against microbial attack
A liquid concentrate which includes: a) from 20 to 70% by weight of 3-phenylpropan-1-ol, b) from 10 to 50% by weight of 1,2-octanediol, c) from 15 to 60% by weight of 1,3-propanediol, and d) where necessary up to 2000 ppm of one or more antioxidants; and a composition for topical application, including such liquid concentrate.
1. A liquid concentrate, which comprises
from 40% to 50% by weight of 3-phenylpropan-1-ol,
from 20% to 30% by weight of 1,2-octanediol, and
from 25% to 35% by weight of 1,3-propanediol.
2. The concentrate according to claim 1 , which further comprises at least one antioxidant selected from the group consisting of 3-tert-butyl-4-hydroxyanisole, 2,6-di-tert-butyl-p-cresol, dodecylgallate, pyrogallate, tocopherol and tocopherol acetate.
3. The concentrate according to claim 2 , wherein the antioxidant is vitamin E.
4. The concentrate according to claim 1 , which further comprises from 80 ppm to 200 ppm of one or more antioxidants.
5. A composition for topical application, which comprises from 0.2 to 3.0% by weight of the concentrate according to claim 1 .
6. The concentrate according to claim 1 , which further comprises up to 2000 ppm of one or more antioxidants.
7. A liquid concentrate, which consists of
From 40 to 50% by weight of 3-phenylpropan-1-ol,
From 20 to 30% by weight of 1,2-octanediol, and
From 25 to 35% by weight of 1,3-propanediol.
8. A liquid concentrate, which consists of
From 40 to 50% by weight of 3-phenylpropan-1-ol,
From 20 to 30% by weight of 1,2-octanediol,
From 25 to 35% by weight of 1,3-propanediol, and
80 to 200 ppm of Vitamin E.
9. A composition formulated for topical application, which comprises from 0.2 to 3.0% by weight of the concentrate according to claim 7 .
10. A composition formulated for topical application, which comprises from 0.2 to 3.0% by weight of the concentrate according to claim 8 .