Patent ID: 7569529

Claim:
A method of obtaining a synergistic odor benefit on fabric comprising the steps: (a) treating the fabric with a first fabric care composition (“FFCC”), wherein the FFCC comprises a first perfume deliver agent (“FPDA”); (b) treating the fabric with a second fabric care composition (“SFCC”) subsequent to the fabric being treated with the FFCC, wherein the SFCC comprises a second perfume deliver agent (“SPDA”); wherein the FPDA comprises a perfume and an amine-based compound having a molecular weight of at least 100 Daltons, wherein at least 10% of the amino groups in the amine-based compound are primary amino groups; and wherein said amine-based compound is chosen from aminoaryl derivatives, polyamines, amino acids and derivatives thereof, substituted amines and amides, glucamines, dendrimers, polyvinylamines and derivatives thereof, and/or copolymer thereof, alkylene polyamine, polyaminoacid and copolymer thereof, cross-linked polyaminoacids, amino substituted polyvinylalcohol, polyoxyethylene bis amine or bis aminoalkyl, aminoalkyl piperazine and derivatives thereof, bis(amino alkyl)alkyl diamine linear or branched, and mixtures thereof; wherein the SPDA is chosen from (i) a Schiff base compound comprising a perfume having an odor detection threshold above about at least 1 part per trillion (hereinafter “ppt”); (ii) a two component system comprising a first component that comprises an amine moiety having a pK a below about 6, and a second component comprising a perfume comprising a carbonyl moiety, wherein at least one of the two components comprise an odor detection threshold above of at least about 1 ppt; and (iii) a combination thereof.