Dsm IP Assets B.v.

Roche Vitamins Inc.

Givaudan-roure Corporation

Givaudan Roure (international) Sa

Ulrich Huber

Volker Schehlmann

Hans Ulrich Gonzenbach

Daniel Sprenger

Katja Berg-Schultz

Georg Frater

Bernhard Hostettler

Alain Bringhen

Rolf Schwarzenbach

Jutta Hotz

Peter Gygax

Alexander Poschalko

The invention relates to the use of polymeric particles for boosting the UV absorption of an UV filter in an UV-sunscreen composition, wherein the polymeric particles comprise at least one polymeric particle comprising at least one chromophore having an UV absorption maximum at &#x3bb;&#x2267;275 nm covalently bound thereto.

Additive for UV-sunscreen preparations

The invention provides a conjugate comprising a hyperbranched polymer covalently bonded to at least three UV absorbing chromophores having an UV absorption maximum &#x3bb;&#x2267;270 nm. The conjugate is an effective and safe sunscreen which can advantageously be used in cosmetic compositions.

UV absorbing chromophores covalently bonded to hyperbranched polymers

The present invention relates to novel 1,4-dihydropyridine derivatives, to novel cosmetic or dermatological sunscreen compositions containing these derivatives and the use of these derivatives for photoprotecting human skin and/or hair against UV radiation, in particular solar radiation.

Ionic UV-A sunscreens and compositions containing them

The present invention relates to 1,3-benzoxazole or benzodiazole UV-A sunscreens and to compositions, in particular topical compositions, containing the above UV-A sunscreens.

Benzoxazole and benzodiazole UV-A sunscreens

The present invention relates to organosilicone derivatives of amino hydroxybenzophenones, a process for their preparation thereof, a cosmetic compositions comprising the organosilicone derivative and the use thereof for protecting hair and/or skin from damage caused by UV-A irradiation.

Organosilicone derivatives of amino hydroxybenzophenones and their use as UV-A filters in cosmetic preparations

Methods for making UV screening compositions by combining benzoxazolyl benzene derivatives of formula (I): wherein Ris hydrogen, C-alkyl or C-alkenyl; Rand Rare independently a group &#x2014;C(R,R)C(R)&#x2550;C(R,R) (a) or a group &#x2014;C(R,R)CH(R)CH(R,R) (b), wherein R, R, R, R, R, R, R, R, Rand Rare independently, hydrogen, C-alkyl or C-alkenyl, or C-alkyl or C-alkenyl containing at least one oxygen atom interrupting the hydrocarbon chain; or wherein R, R, R, R, Rand Rare hydrogen, C-alkyl or C-alkyl containing at least one oxygen atom interrupting the hydrocarbon chain, or alkyl substituted by silane or oligosiloxane moiety, and one of Rand Ror Rand Ris a silane or oligosiloxane moiety and the other one of Rand Ror Rand Ris hydrogen; and X is phenylene or naphthylene, or substituted phenylene or naphthylene with a cosmetic base. Methods of protecting a surface from UV radiation by applying a UV screening agent of formula I to a surface such as hair or skin.

Benzene and naphthylene derivatives and their use as UV screening agents

Novel benzoxazolyl benzene derivatives of formula (I):wherein Ris hydrogen, C-alkyl or C-alkenyl; Rand Rare independently a group &#x2014;C(R,R)C(R)&#x2550;C(R,R) (a) or a group &#x2014;C(R,R)CH(R)CH(R,R) (b), wherein R, R, R, R, R, R, R, R, Rand Rare independently, hydrogen, C-alkyl or C-alkenyl, or C-alkyl or C-alkenyl containing at least one oxygen atom interrupting the hydrocarbon chain; or wherein R, R, R, R, Rand Rare hydrogen, C-alkyl or C-alkyl containing at least one oxygen atom interrupting the hydrocarbon chain, or alkyl substituted by silane or oligosiloxane moiety, and one of Rand Ror Rand Ris a silane or oligosiloxane moiety and the other one of Rand Ror Rand Ris hydrogen; and X is phenylene or naphthylene, or substituted phenylene or naphthylene for use as UV screening agents for protecting human skin or hair against radiation, and in UV screening compositions, particularly topical compositions for cosmentic or dermatological use.

2-benzoxazolyl benzene derivatives and their use as UV screening agents

A process for the purification of 1,3-diketones comprising reacting a 1,3-diketone with an earth metal or alkaline earth metal complexing agent in an organic solvent, isolating, washing and decomposing the resulting complex, and isolating the purified 1,3-diketone.

Process for the purification of 1,3-diketones

Pyrimidine-2,4,6-trione light screening compositions

2-hydroxyphenyl benzotriazoles as UV-A/B filters

Indanylidene compounds

The invention relates to a cosmetic light screening composition containing, in an aqueous phase, about 0.5% to about 10 wt % of 2-phenylbenzimidazol-sulphonic acid or a salt thereof and at least one fatty phase, including about 1% to about 30 wt % of a linear or cyclic polysiloxane compound of the general formula Ia or Ib: ##STR1## wherein x is R or A;

Light screening composition containing a polysiloxane-type UV-B

The present invention concerns new s-triazines of the formula ##STR1## wherein W.sup.1, W.sup.2 and W.sup.3 each independently signifies C.sub.1 -C.sub.20 alkyl or a group SpSil;

Light screening compositions

The invention is concerned with compounds of formula I: ##STR1## which are useful as sun screening agents.

Symetrical hydroxyphenyl-s-triazine compositions

A light screening agent, which contains a compound of the general formula ##STR1## wherein R and R' are alkyl, hydroxyalkyl, alkenyl, alkynyl, or alkyl ether radicals substituted by one or more hydroxy and/or alkoxy groups and

Growing community of inventors

Erlenbach, Switzerland

Ulrich Huber