Symrise Gmbh & Co Kg

Ute Rohde

Horst Surburg

Leslie C Smith

Keith J McDermott

Steffen Sonnenberg

Stephan Hillers

Gerd Mansfeld

Heribert Kaesler

Karl Sparkuhle

Fritz Henke

This invention relates to odor neutralizers comprising esters of the formula (I) wherein Ris an alkyl radical with 1 to 4 carbon atoms which can optionally contain a double bond; Ris a hydrogen or an alkyl radical with 1 to 3 carbon atoms which can optionally contain a double bond; Ris a hydrogen or a methyl radical substituted by the alkyl radicals Rand R; Ris a hydrogen, a methyl radical or an acyloxy radical of the general formula O&#x2014;CO&#x2014;Rwherein Rhas the abovementioned meaning; R, R, R, Rand Rare identical or different and is hydrogen or methyl; Ris a hydrogen and Rand Rcan together represent a single carbon bond or a methylene or an ethylene bridge,with the proviso that i) in the case of cyclohexyl esters in which R=methyl, R=isopropyl, R=methyl and R=hydrogen, the substituents Rand Rare arranged in a cis relationship to each other; ii) in the case of cyclohexyl esters in which R=isopropenyl, R=methyl and R=hydrogen, the substituent Ris an alkyl group with at least two C atoms; iii) in the case of acyclic monofunctional esters, the substituent Ris an alkyl group with at least two C atoms; and iv) in the case of cyclohexyl esters in which R, R, R=hydrogen and R, R, R=methyl, the substituent Ris methyl, ethyl, propyl or 1-propen-1-yl.

Odor neutralizers

A mixture of acrylic acid and nitrogen compounds is particularly adapted to achieve a sulfur-free odorization of a gas.

Gas odorization method

Growing community of inventors

Höxter, Germany

Ute Rohde