| 摘要 |
A method of facilitating the incorporation of hydroxypropyl methyl cellulose (HPMC) into a liquid formulation containing water which comprises: 1. forming a liquid premix of hydroxypropyl methyl cellulose dispersed in an aqueous-free organic liquid medium in which it does not swell or dissolve, selected from the group consisting of liquified nonionic surfactants, fatty acids, anionic surfactants and mixtures thereof, by dispersing HPMC in said liquified organic medium with mild agitation; 2. adding said premix to an aqueous-containing liquid formulation and dispersing therein by means of a short mixing cycle as short as 5-10 minutes. This method has particular utility in the preparation of liquid shampoos, liquid dishwashing detergents, liquid hand soaps and other aqueous-containing liquid formulations wherein it is desirable or necessary to include hydroxypropyl methyl cellulose as a viscosity modifier. |
