Aminoalkyl substituted esters and amides of fumaric acid for neutralizing malodor

A method of imparting a malodor neutralizing effects to a substrate comprising contacting the substrate with the aminoalkyl substituted fumarate of formula (I)

• wherein n is 1 or 2;
• Z is —OR2 or —Y—(R—NR5R6)n;
• R is linear or branched C2-C9 alkyl, linear or branched C3-C18 alkoxyalkyl, phenyl, linear or branched C7-C15 phenoxyalkyl, or linear or branched C8-C16 benzoyloxyalkyl;
• R2 is linear or branched C1-C8 alkyl, C3-C12 cycloalkyl or C4-C13 alkylcycloalkyl wherein the cycloalkyl ring is optionally substituted with C1-C6 alkyl;
• or
• R2 is linear or branched C1-C8 alkyl containing at least one oxygen atom, C3-C12 cycloalkyl containing at least one oxygen atom and wherein the cycloalkyl ring is optionally substituted with C1-C6 alkyl, or C4-C13 alkylcycloalkyl containing at least one oxygen atom and wherein the cycloalkyl ring is optionally substituted with C1-C6 alkyl;
• R3 and R5 are independently hydrogen, phenyl, linear or branched C1-C10 alkyl, or linear or branched C1-C10 alkyl containing at least one oxygen atom;
• R4 and R6 are independently linear or branched C1-C10 alkyl, or linear or branched C1-C10 alkyl containing at least one oxygen atom;
• or
• R3 and R4, or R5 and R6 are forming together with the nitrogen atom to which they are attached an aliphatic or aromatic heterocyclic ring system having 3 to 6 ring atoms;
• the ring system can optionally contain one oxygen atom or an additional nitrogen atom;
• and the ring system can optionally bear one or more linear or branched C1-C6 alkyl groups, C5-C6 cycloalkyl groups, or C5-C6 aryl groups;
• and
• a) when n is 1;
• Y is oxygen or NR1 wherein R1 is hydrogen, linear of branched C1-C8 alkyl, C3-C12 cycloalkyl or alkylcycloalkyl;
• or R1 is linear of branched C1-C8 alkyl substituted with oxygen atoms, C3-C12 cycloalkyl substituted with oxygen atoms, or alkylcycloalkyl substituted with oxygen atoms;
• and
• b) when n is 2, Y is nitrogen.