Back to results
US 5,264,145 AGranted
Personal cleansing freezer bar with selected fatty acid soaps and synthetic surfactant for reduced bathtub ring, improved mildness, and good lather
AssigneeThe Procter & Gamble Company
InventorsDawn M. French, Gerald L. Cantey, Natalie M. Moroney, James E. Taneri, Mark L. Kacher, Mary E. Carethers, Lawrence A. Gilbert, Richard W. Schell
Life of this patent
Estimating the term…
Abstract
The present invention relates to an improved freezer bar soap comprising selected saturated C.sub.14 -C.sub.18 fatty acid soaps and lathering synthetic surfactant. The bars of this invention have reduced bathtub ring, as well as improved mildness while maintaining acceptable lathering/sudsing characteristics.
Claims13
A mild, lathering personal cleansing freezer soap bar with reduced bathtub ring comprising:
- I. from about 25% to about 70% of soap by weight of said bar, said soap consisting essentially of:
- saturated fatty acid soaps selected from the group consisting of:
- myristic, palmitic, and stearic acid soaps and mixtures thereof;
- wherein said soap is a sodium and potassium soap mixture (Na/K);
- said Na/K soap having a percentage ratio of from about 90/10 to about 75/25;
- A. said saturated fatty acid soaps selected from the group consisting of:
- myristic, palmitic, and stearic acid soaps and mixtures thereof are present at a level of from about 75% to about 100% by weight of total fatty acid soap;
- and
- B. from 0% to about 25% of other soaps selected from the group consisting of:
- oleic and lauric acid soaps and minor fatty acid (C.sub.8, C.sub.10, C.sub.18:2) soaps by weight of said total soap;
- wherein said oleic soap level is from 0% to about 10% by weight of the bar;
- and
- said lauric soap is from 0 to about 10% by weight of said bar;
- and
- wherein said minor (C.sub.8, C.sub.10, C.sub.18:2) soap level is from 0% to about 5% by weight of said bar;
- and
- wherein said Na/K soap mixture level is from about 95% to about 100% by weight of said total soap;
- and
- II. from about 5% to about 30% of a lathering synthetic surfactant by weight of said bar;
- and
- III. from about 15% to about 30% of water by weight of said bar;
- and
- wherein said soap and said lathering synthetic surfactant have a ratio of from about 5:1 to about 1:1.
20 more elements
A mild, lathering personal cleansing freezer soap bar with reduced bathtub ring comprising:
- I. from about 25% to about 70% of total fatty acid soap by weight of said bar, said total soap comprising:
- (a) saturated fatty acid soaps selected from the group consisting of:
- myristic, palmitic, and stearic acid soaps and mixtures thereof at a level of from about 75% to about 100% by weight of total fatty acid soap;
- and
- (b) from 0% to about 25% of other soap selected from the group consisting of:
- oleic and lauric acid soaps and minor fatty acid soap selected from the group consisting of:
- C.sub.8, C.sub.10, C.sub.18:2 and mixtures thereof;
- wherein said soap is a sodium and potassium soap mixture (Na/K);
- said Na/K soap having a percentage ratio of from about 90/10 to about 75/25;
- wherein said oleic soap level is from 0% to about 10% by weight of the bar;
- and
- said lauric soap level is from 0% to about 10% by weight of said bar;
- and
- wherein said minor (C.sub.8, C.sub.10, C.sub.18:2) soap level is from 0% to about 5% of weight of said bar;
- and
- II. from about 5% to about 30% of a lathering synthetic surfactant by weight of said bar;
- III. from about 5% to about 30% of a nonreducing sugar;
- and
- IV. from about 15% to about 30% of water by weight of said bar;
- and
- wherein said total soap and said lathering synthetic surfactant have a ratio of from about 5:1 to about 1:1.
18 more elements
A process for making a freezer bar comprising the following steps:
- step 1
- mixing a soap composition comprising:
- I. from about 25% to about 70% of soap by weight of said bar, said soap consisting essentially of:
- saturated fatty acid soaps selected from the group consisting of:
- myristic, palmitic, and stearic acid soaps and mixtures thereof;
- wherein said soap is a sodium and potassium soap mixture (Na/K);
- said Na/K soap having a percentage ratio of from about 90/10 to about 75/25);
- II. from about 5% to about 30% of a lathering synthetic surfactant by weight of said bar;
- and
- III. from about 15% to about 30% of water by weight of said bar;
- and
- wherein said soap and said lathering synthetic surfactant have a ratio of from about 5:1 to about 1:1;
- wherein said fatty acid soap and other soap bar ingredients are mixed at a temperature of from about 65.degree. C. to about 74.degree. C. (from about 150.degree. F. to about 165.degree. F.);
- wherein said soap is made in situ at an initial temperature of from about 52.degree. C. to about 57.degree. C. (125.degree.-135.degree. F.) and a final temperature of from about 85.degree. C. to about 99.degree. C. (185.degree.-210.degree. F.);
- said other soap ingredients are added;
- step 2
- cooling the mix of step 1 (in a scraped wall heat exchanger to partially crystallize said mix) from a temperature of from about 85.degree. C. to about 99.degree. C. (from about 175.degree. F. to about 210.degree. F.) to a final temperature of from about 46.degree. C. to about 66.degree. C. (115.degree.-155.degree. F.);
- and
- step 3
- extruding the cooled mix of step 2 onto a moving belt as a soft plug and then further cooling to fully crystallize and ten stamping to form said bar.
17 more elements
Dependencies are inferred from the claim text.