Development of a Novel Cationic Polymer Having a Hydrophobic Group

Abstract

Hair receives external damage such as heat, ultraviolet rays, and friction on a daily basis, and it is necessary to prevent damage by daily hair care such as shampoo and conditioner. By incorporating a cationic polymer in the shampoo, a complex of a shampoo cleansing component and a cationic polymer, which is called “coacervate”, is formed at the time of shampooing, and the feeling of creaking at the time of rinsing is reduced. On the other hand, the coacervate sorbed in the hair may enhance the effect of the conditioner used after shampooing. This time we report on the development of a novel cationic polymer which improves the conditioning effect at shampooing and the sorptive property of the conditioner after shampooing. The cationic polymer was determined by examining the type of cation, degree of cationization, molecular weight, and hydrophobic group. The effect on hair was examined by friction coefficient, contact angle measurement and the like. The compatibility with shampoo wash components and the degree of coacervate formation are also reported.