Patent ID: 7316994

Claim:
A method for making an aqueous fabric softening compostion having pH from about 2 to about 8 with improved delivery of perfume raw material, said method comprising preparing a perfume polymeric particle by mixing: a) a polymeric particle comprising a monomer which is in its protonated cationic form in aqueous media at a pH within the range of about 2 to about 8 having the formula: wherein each of R 1 , R 2 and R 3 are independently selected from hydrogen or C 1 to C 6 alkyl; T is a carboxylic moiety; Z is —(CH 2 )—; z is 2; A is NR 6 R 7 wherein R 6 and R 7 are independently selected from H, C 1 -C 8 linear or branched alkyl, or alkyleneoxy having the formula: —(R 9 O) y R 10 wherein R 9 is C 2 -C 4 linear or branched alkylene, carbonyl alkyl, or mixtures thereof; R 10 is hydrogen, C 1 -C 4 alkyl carbonyl alkyl, or mixtures thereof; y is an integer from 1 to 10; and b) a perfume comprising a perfume raw material having a Kovats Index value of from about 1000 to about 1400 and optionally one or more of the following characteristics: a molecular weight of less than about 200; a boiling point of less than about 250° C.; or a ClogP of less than about 3; wherein the polymeric particle has a net cationic charge at a pH from about 2 to about 8 from about 20 mV to about 80 mV, a particle size in the range from about 100 nanometers to about 50 micrometers and a Response Factor (RF) of the perfume polymeric material is at least about 1.5, as measured by Longevity Test Protocols I or II, said perfume being non-encapsulated by and non-polymerically associated with the polymer, and c) adding said perfume polymeric particles to a product matrix comprising a fabric softening agent.