Roche Vitamins Inc.

Givaudan-roure Corporation

Givaudan S.a.

Givaudan Corporation

Rolf Schwarzenbach

Hans Ulrich Gonzenbach

Georg Frater

Stephane F Van Oycke

Ulrich Huber

Peter Schudel

Alain Bringhen

Dominique Sidrac

Louis Bertschi

A device for olfactory judgement of an odorous substance, particularly a perfume, substantially comprising a flat test object in a casing, preheated or heated electrically by a temperature control and measuring circuit to a given temperature and with prolonged heat storage means, on which an easily attachable and removable material is disposed and is covered with the odorous substance for judgement, the device also comprising a fan, wherein in the casing ( ) the odorous substance can be applied to a sample strip ( ) connected via a sample holder ( ) to a heatable metal base carrier ( ) movable in one direction (P), and the base carrier ( ) is disposed at one end of an air flow duct ( ) formed by a pipe ( ), particularly a square pipe ( ) open at both ends, a fan ( ) being disposed at the other end and adapted, by means of an associated motor ( ), to convey air from the end near the fan, via the sample strip ( ) to the other end of the air flow duct ( ), so that a starting air flow ( ), a received air flow ( ) containing evaporated odorous constituents, and a discharged flow ( ) considered with odorous constituents are generated at the opening ( ), so that the odorous substance can be judged by a test person sniffing the discharged flow ( ) through his nose or by collecting the odorous constituents from the discharged flow ( ) and introducing them into a per se known analytical device. The device is adapted to simulate the olfactory properties of an odorous substance on or near human skin.

Device for olfactory judgment of an odorous substance, use thereof and a method of operating the device

The invention relates to cosmetic light screening compositions containing

Cosmetic light screening composition

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

Novel organosiloxane compounds have at least one unit ##STR1## any other units being present in this organosiloxane are ##STR2## wherein R is a C.sub.1-8 alkyl or aryl, R.sup.1 is H or a C.sub.1-5 alkyl, R.sup.2 is H, C.sub.1-5 alkyl or OR.sup.1, R.sup.3 is a C.sub.1-5 alkyl, R' is H, a monovalent C.sub.1-8 hydrocarbon or halogenated hydrocarbon group, a is 0, 1 or 2, b 0, 1, 2 or 3 and n 1 to 6, provided the

Organosilicon compounds

A process for treating 2-ethylhexyl p-methoxycinnamic acid ester is described. The process comprises heating, preferably distilling, the ester in the presence of a phenol to insure that the ester is considered Ames negative.

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Winterthur, Switzerland

Rolf Schwarzenbach