Process for making a transparent personal cleansing bar

Details Process for making a transparent personal cleansing bar Process for making a transparent personal cleansing bar

C - Chemistry, Metallurgy

11

D

C11D 13/00 (2006.01) C11D 3/30 (2006.01) C11D 10/04 (2006.01) C11D 11/00 (2006.01) C11D 13/10 (2006.01) C11D 13/14 (2006.01) C11D 17/00 (2006.01) C11D 1/06 (2006.01) C11D 1/10 (2006.01) C11D 1/12 (2006.01) C11D 1/14 (2006.01) C11D 1/16 (2006.01) C11D 1/22 (2006.01) C11D 1/28 (2006.01) C11D 1/29 (2006.01) C11D 1/34 (2006.01) C11D 3/20 (2006.01)

Patent

CA 2196612

This invention relates to a monohydric alcohol-free process for making transparent pour molded personal cleansing bars which exhibit good hardness characteristics. The process comprises: (I) making a molten mixture of from 18 parts to 35 parts soap, wherein said soap is at least 50 % insoluble sodium soap; from 14 parts to 32 parts water; from 5 parts to 37 parts synthetic surfactant; and from 18 parts to 37 parts of a water-soluble organic solvent, wherein the combined level of water and water-soluble organic solvent within the molten mixture is at least 40 parts; and (II) transferring a unit amount of said molten mixture into a bar-forming mold or tube and (III) allowing said molded unit to cool in acquiescent conditions into a mild, low-smearing transparent personal cleansing bar. The preferred bars made by the process of the present invention are more weight stable than bars made with several parts of alcohol. An important benefit of this invention is that bar processing time is substantially reduced by faster crystallization and faster bar stabilization.

Procédé ne nécessitant pas l'utilisation d'alcools monovalents, permettent de produire des barres transparentes pour l'hygiène personnelle, moulées par coulée, qui possèdent de bonnes caractéristiques de dureté. Ledit procédé consiste: (I) à produire un mélange fondu comprenant de 18 parties à 35 parties de savon, ledit savon contenant au moins 50 % de savon de sodium insoluble, de 14 parties à 32 parties d'eau, de 5 parties à 37 parties de tensioactif synthétique et de 18 parties à 37 parties d'un solvant organique hydrosoluble, le taux combiné d'eau et de solvant organique hydrosoluble dans le mélange fondu étant d'au moins 40 parties; (II) à transférer une quantité unitaire dudit mélange fondu dans un moule ou tube de formation de barre; et (III) à laisser ladite unité moulée refroidir dans des conditions appropriées pour obtenir une barre transparente pour l'hygiène personnelle douce et à faible ramollissement. Les barres préférées fabriquées selon le procédé présenté sont plus stables en poids que les barres constituées de plusieurs parties d'alcool. Un avantage important de la présente invention est que le temps de traitement est considérablement réduit grâce à une vitesse accrue de cristallisation et de stabilisation des barres.

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