Dragoco Gerberding & Co. Gmbh

Dragoco Geberding & Co. Gmbh

Erich Klein

Willi Rojahn

Ernst-Joachim Brunke

Hartmut Struwe

Ernst Joachim Brunke

Frank Thomel

A process for imparting, enhancing or modifying the flowery odorous note in perfumes, perfume compositions or artificial essential oils, for use in a perfume composition, a perfumed article, a cologne, a foodstuff, an alcoholic or nonalcoholic beverage, a toothpaste, a medicinal product or a chewing gum, comprising the step of adding an organoleptic property modifying quantity of 1,1-Di(C.sub.1 -C.sub.6 -alkyl)-2-phenylethan derivatives of formula A, wherein R is a formyl-, hydroxymethyl-, formoxymethyl-, acetoxymethyl- or a nitrilo group and the total number of carbon atoms in both alkyl substituents together is at most 8. ##STR1## .

1,1-Di(C.sub.1 -C.sub.6 -alkyl)-2-phenyl-ethane derivatives as perfuming

Polyunsaturated cyclopentane derivatives of the general formula ##STR1## wherein R.sup.1 signifies a lower alkyl group with 1 to 3 carbon atoms and R.sup.2 signifies a hydroxymethyl, acetomethyl, or formyl group, and the wavy line on carbon atom 1 signifies epimeric forms have excellent aromatic properties and may be used in perfume compositions. The compounds in which R.sup.2 is hydroxymethyl have a pronounced sandalwood scent. Methods of production are also disclosed.

Polysubstituted cyclopentene derivatives

A fixative for perfume compositions, 1-(2,6,6-trimethylcyclohexyl)-hexane-3-ol, itself odorless to many people, brings about a 'rounding-off' of the perfume while increasing its intensity. The compound is made by condensation of citral with pentane-2-on, followed by cyclization and hydrogenation.

Fixative for perfume compositions

A fixative for perfume compositions, 1-(2,6,6-trimethylcyclohexyl)-hexane-3-ol, itself odorless to many people, brings about a 'rounding-off' of the perfume while increasing its intensity. The compound is made by condensation of citral with pentane-2-on, followed by cyclization and hydration.

The invention concerns a bacteriostatic composition and method employing 3,7,11-trimethyl-dodeca-2,6,10-trien-1-ol as bacteriostactically active agent.

Bacteriostatic composition and method

Glyceryl-tri-3,5,5-trimethylhexanoate is particularly suitable for use in cosmetic preparations, particularly in skin creams used for protection against harmful outside agents.

Glyceryl-tri-3,5,5-trimethylhexanoate protecting the skin therewith and

Synthetic oakmoss extracts of alkyl-substituted .beta.-resorcylic acid esters useful as perfume ingredients, are prepared by refluxing alkyl-substituted dihydro-.beta.-resorcylic acid esters with sulphuric acid and acetic anhydride, followed by saponifying the resultant diacetate.

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Holzminden, Germany

Erich Klein