Patent ID: 11965127
Assignee: DOW SILICONES CORPORATION
Field: Basic materials chemistry (Chemistry)
Classification: CPC C | IPC C

Claim 8:
9. A method of preparing a cationic surfactant, said method comprising:
reacting (A) an amine compound and (B) a quaternary ammonium compound to give the cationic surfactant;
wherein the amine compound (A) has the general formula (II):

Z-D-NHR  (II),, where Z is a siloxane moiety comprising an inorganic silicon-oxygen-silicon group, with organosilicon and/or organic side groups attached to the silicon atoms, D is a covalent bond or a divalent linking group, and R is H or an unsubstituted hydrocarbyl group having from 1 to 4 carbon atoms;
wherein the quaternary ammonium compound (B) has the general formula (III):

[R8NR13]+[X]−  (III),, where R8 is an amine-reactive group; each R1 is an independently selected unsubstituted hydrocarbyl group having from 1 to 4 carbon atoms; and X is an anion; and
wherein the cationic surfactant is the cationic surfactant of claim 1.