Kao Corporation

Cognis Deutschland Gmbh

Cognis Deutschland Gmbh & Co. Kg

Theo Ten Pierik

Thomas Markert

Werner Faber

Ralph Nemitz

Volker Porrmann

Ute Lemke

Marc Speitkamp

Elke Veit

Compounds of the formula (I): wherein X is a &#x2014;(C&#x2550;CH)&#x2014; group or a &#x2014;CH(CH)&#x2014; group, with the proviso that when X is a &#x2014;(C&#x2550;CH)&#x2014; group, Ris a Calkyl group or a Calkenyl group and when X is a &#x2014;CH(CH)&#x2014; group, Ris hydrogen, a saturated or unsaturated, linear or a branched Calkyl group, a Cacyl group, a Ccycloalkyl group or an aryl group are useful as perfumes.

Dimethylbenzene derivatives

Compounds of the formula (I):wherein the bond between the &#x3b1;- and &#x3b2;-positions to the aldehyde group represents a C&#x2014;C single bond or a cis- or trans-configured C&#x2550;C double bond are useful as perfumes and perfume ingredients.

3,3-Dimethylcyclohexane derivatives

A Compound corresponding to formula (I):wherein X is a group selected from the group consisting of &#x2014;CHO, &#x2014;CN, &#x2014;CH&#x2550;NOH, and &#x2014;CHOH, and wherein the C&#x2550;C double bond assumes a Z or E configuration.

Trimethyldecenyl compounds

Compounds of the general formula (I) are described:wherein each of R, R, R, R, Rand Rindependently represents a substituent selected from the group consisting of hydrogen, methyl, ethyl, n-propyl, and isopropyl; an wherein x represents either 0 or 1. The compounds are useful as fragrances and as added components in fragrance blends. Methods of improving the harmony, emanation, naturalness an staying power of other fragrance ingredients by the addition of such compounds are also described.

Cyclic ketals, fragrance compositions containing the same and methods of using the same

Carbonyl compounds derived from the reaction of alkyl cyclopentenols and vinyl ethers are described. The carbonyl compounds described have excellent fragrance properties, and their use as fragrances and/or fragrance-enhancing compounds is also described. Processes for the preparation of the carbonyl compounds are described as well.

Carbonyl compounds, methods of making the same, and their use as fragrances and fragrance-enhancing additives

The use of aldehydes as odorous materials, which can be produced through partial or total hydroformylation of cyclooctadienes, except cyclooctane aldehydes, is described. The fragrance enhancing capacity of the compounds is described in methods for their use both as perfumes and perfume enhancers or boosters.

Methods of providing a fragrance to a composition and methods of enhancing fragrances using cyclooctadiene hydroformylation products

Odoriferous compounds containing from 70 to 90% by weight of 2-methylene-3-(4-methlycyclohex-3-enyl)-butanal and from 10 to 30% by weight of limonene aldehyde, are described. The fragrance providing capabilities of the compounds are described in methods for their use, and perfumed compositions containing such compounds are also described.

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Venlo, Netherlands

Theo Ten Pierik