| 摘要 |
<p>The invention provides a process of improving the viscosity stability upon storage at temperatures of 25 ~C or more but below 40 ~C of a fabric softeni ng composition comprising: (a) a 8 to 50 % by weight of a cationic fabric softening agent; and (b) perfume by the inclusion of 3.5 % to 15 % by weight of an emulsified silicone, based upon the total amount of the composition, which has been emulsified with one or more cationic surfactants. In one aspect, the viscosity of the silicone before emulsification is from 10,000 c St to 400,000 cSt, preferably from 20,000 cSt to 350,000 cSt, more preferably from 25,000 cSt to 250,000 cSt and the emulsion is a macro-emulsion. In another aspect, the median emulsified silicone droplet size is at least 0.2 .mu.m, preferably at least 0.25 .mu.m, more preferably at least 0.39 .mu.m, preferably also no greater than 25 .mu.m.</p> |
