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US 2006/0140886 A1Published application
Tanning aids
AssigneeRoehm GmbH
InventorsKai-Oliver Schocke, Peter Seelmann, Uwe Hild, Birgit Haefner, Gerald Molnar, Erich Auer
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AssigneeRoehm GmbH
InventorsKai-Oliver Schocke, Peter Seelmann, Uwe Hild, Birgit Haefner, Gerald Molnar, Erich Auer
Estimating the term…
The invention relates to tanning aids comprising a polymethylmethacrylate moulded body, which contains between 0.1 and 1.5 wt. % of a UV-stabiliser comprising a 2,2,6,6 tetraalkyl piperidyl group, said stabiliser having a transmission of at least 95% when dissolved in MMA with a concentration of 1 wt. % at 330 nm. Said polymethylmethacrylate moulded body contains between 0.005 and 0.1 wt % of a UV-absorber, which has a maximum transmission of 5% when dissolved in MMA with a concentration of 0.02 wt % at 320 nm and a transmission of at least 80% at 370 nm. The transparency of the polymethylmethacrylate moulded body is at least 40% at 380 nm.
A tanning aid comprising a polymethyl methacrylate shaped body which comprises 0.1 to 1.5% by weight of a UV stabilizer comprising 2,2,6,6-tetraalkylpiperidyl groups and which, dissolved in MMA at a concentration of 1% by weight, exhibits a transmission of at least 95% at 330 nm and the polymethyl methacrylate shaped body comprises 0.005 to 0.1% by weight of a UV absorber which, dissolved in MMA at a concentration of 0.02% by weight, exhibits a transmission of at most 5% at 320 nm and a transmission of at least 80% at 370 nm, wherein the transparency of the polymethyl methacrylate shaped body at 380 nm is at least 40%.
A method of producing a tanning aid product comprising adding polymethyl methacrylate shaped bodies having a transparency at 380 nm of at least 40% to a tanning aid composition.
Dependencies are inferred from the claim text.