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US 4,328,131 AGranted
Elastic detergent bar of improved elevated temperature stability
AssigneeColgate-Palmolive Company
InventorsJohn C. Carson, Jr., James H. Bowers
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AssigneeColgate-Palmolive Company
InventorsJohn C. Carson, Jr., James H. Bowers
Estimating the term…
An elastic detergent bar of improved elevated temperature stability, so that it better maintains its shape on storage at temperatures somewhat higher than normal, includes an amphoteric synthetic organic detergent in mixture with an anionic synthetic organic detergent, gelatin, water and insoluble gas in very small bubble form distributed throughout the bar. The bars are substantially form-retaining during storage and although they wear away during use, substantially retain their initial forms and elasticities for major proportions of their useful lives. Compared to similar bars in which the insoluble gas, such as air, is not present, the invented bars are stable at higher storage temperatures, e.g., 5.degree. to 10.degree. C. higher, making them commercially much more acceptable. Additionally, the elastic detergent bars are resistant to breakage during shipment and use, exhibit less surface tackiness than similar control bars, are very easily molded to finely figured and detailed shapes and of course, because of their lower density, float. Also within the invention is a process for making the described products.
A hand squeezable, elastic, solid molded detergent product of improved elevated temperature stability on storage consisting essentially of about 20 to 80% of a mixture of anionic and amphoteric synthetic organic detergents in a proportion between about 1:5 and 5:1, about 5 to 30% of gelatin, about 5 to 50% of water and sufficient gas in small bubbles distributed throughout such product so that the density thereof is in the range of 0.5 to 0.98 g./cc., said anionic synthetic organic detergent being selected from the group consisting of lower alkanolamine higher fatty alcohol sulfates, ammonium higher fatty acid monoglyceride sulfates and mixtures thereof and the amphoteric synthetic organic detergent being selected from the group consisting of imidazolinium betaines, iminodipropionates and aminopropionates and mixtures thereof, which product is sufficiently squeezable and elastic so that a 2 cm. thickness thereof can be pressed between the thumb and forefinger to a 1 cm. thickness and upon release of such pressure will return within five seconds to within 1 mm. of the 2 cm. thickness.
A hand squeezable, elastic, solid molded detergent product of improved elevated temperature stability on storage which consists essentially of an amphoteric detergent selected from the group consisting of imidazolinium betaines, iminodipropionates and aminopropionates and mixtures thereof, solvent and gelatin, with a gas distributed through said product in small bubbles so that the density of the product is in the range of 0.5 to 0.98 g./cc., which product is sufficiently squeezable and elastic so that a 2 cm. thickness thereof can be pressed between a thumb and forefinger to a 1 cm. thickness and upon release of such pressure will return within five seconds to within 1 mm. of the 2 cm. thickness.
A method of making a hand squeezable, elastic, solid molded detergent product of improved elevated temperature stability on storage, which product comprises about 20 to 80% of a mixture of anionic and amphoteric synthetic organic detergents in a proportion between about 1:5 and 5:1, about 5 to 30% of gelatin, about 5 to 50% of water and sufficient gas in small bubbles distributed throughout the product so that the density thereof is in the range of 0.5 to 0.98 g./cc., which product is sufficiently squeezable and elastic so that a 2 cm. thickness thereof can be pressed between the thumb and forefinger to a 1 cm. thickness and upon release of such pressure will return within five seconds to within 1 mm. of the 2 cm. thickness and in which product the anionic synthetic organic detergent is selected from the group consisting of ammonium higher fatty monoglyceride sulfates and lower alkanolammonium higher fatty alcohol sulfates and mixtures thereof and the amphoteric detergent is selected from the group consisting of imidazolinium betaines, iminodipropionates and aminopropionates and mixtures thereof, which comprises mixing the detergents, gelatin and water together at an elevated temperature to dissolve the gelatin therein, mixing in insoluble gas therewith to produce small bubbles thereof throughout the mixture, so as to increase the volume thereof from about 5 to 60% and cooling the mix to solidify it and entrap the gas bubbles therein.
Dependencies are inferred from the claim text.