Patent ID: 8026206
Filing Date: 2011-09-27
Classification: C11D

Abstract:
1. A process for making a fabric softener composition, comprising the steps of: adding a rheology modifying fabric softening active comprising a long chain amine, a derivative thereof, or a mixture thereof to water at a temperature of between about 25° C. and about 70° C. to form a mixture, wherein the long chain amine has a general chemical structure of: wherein, R or where R 5 is a C 1-6 alkyl or alkylene group, a hydrogen, or a polyamine, R 2 is a C 1-6 alkylene group, a C 1-30 alkoxylated group, or a covalent bond, and R 3 or R 4 independently is the same as R 1 —A—R 2 , a C 1-5 alkyl group, or a hydrogen; adding a quaternary amine fabric softening active to the mixture at a temperature of between about 25° C. and about 70° C; cooling the mixture to a temperature at about 10° C. below to about 10° C. above the re-crystallization/solidification phase transition temperature of the dispersed fabric softening active or actives; and in-situ adjusting the pH of the long chain amine, derivative thereof or mixtures thereof and the quaternary amine fabric softening active to a pH in the range of about 1.5 to about 7.0 by adding a polyprotic acid at about or under the re-crystallization/solidification phase transition temperature of the fabric softening active or actives to form the fabric softener composition.