Abstract
Main ingredient of domestic fabric softeners is a double chain cationic surfactant. It is suggested that the performance is related to phase condition or molecular orientation of the cationic surfactant or the compound used together by many experiments. A polyether modified silicone (PMS) makes a particle size of a fabric softener smaller, and tribological characteristics lower. The particle combined with PMS improves texture of clothes and their durability as well as maintains their appearance by penetrating deep into filaments uniformly. Especially, lower modified and highly polymerized PMS is a suitable material for the compound. It is presumed that the PMS is finely distributed in the particle.