Cleaning compositions for solid surfaces – auxiliary compositions – Auxiliary compositions for cleaning – or processes of preparing – Surfactant composition for cleaning agents
Patent
1996-02-28
1997-07-15
Hertzog, Ardith
Cleaning compositions for solid surfaces, auxiliary compositions
Auxiliary compositions for cleaning, or processes of preparing
Surfactant composition for cleaning agents
510337, 510345, 510356, 510433, 510465, 510502, C11D 1100, C11D 152, C11D 304, C11D 332
Patent
active
056483295
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to a process improvement relating to the manufacture of detergent compositions, especially laundry and dishwashing detergents.
BACKGROUND OF THE INVENTION
The manufacturer may find it desirable to add any number of detersive and aesthetic ingredients to modern laundry detergent compositions using various handling techniques. For example, some sensitive ingredients such as enzymes and perfumes may be added by dry-mixing or by spraying onto a final granular product. The formulation of liquid detergents can involve various batch or continuous processes which may include various solubilizing, mixing, pH-adjusting, etc., steps. Such procedures have become well-known and commonplace in the detergent industry, and various batch, continuous and mixed continuous/batch processes for the manufacture of detergent compositions are currently in use.
Depending on the method of manufacture, the type of detergent composition being manufactured and the available equipment, it may be desirable for the manufacturer to employ various ingredients as stock solutions which are fluid in form. This especially true when formulating liquid detergents. Typically, fluid forms of detersive ingredients comprise water or water-alcohol as the fluidizing medium in which the desired ingredients can be dissolved or slurried.
While detersive surfactants are mainly water-soluble, it is well-known to those skilled in the detergency arts that various surfactants often form quite viscous fluids, or even high viscosity pasty masses or gels, when added to water at high concentrations. Such high viscosity materials can be difficult to work with in a manufacturing plant. Of course, one simple method to avoid handling problems is either to work with such surfactants in their substantially dry, solid state., to use them in a more dilute, more easily handleable, fluid form, or to heat them to provide fluidity.
However, in the event the manufacturer wishes to employ surfactants in the form of fluids which are stable and relatively highly concentrated, it is generally advantageous to adjust such fluids so that they are easier to handle, especially with regard to their ability to be pumped using conventional pumping equipment. On the other hand, it would be undesirable to add any ingredients to such surfactant-containing fluids which could not be tolerated in the finished detergent compositions, since to do so would require additional steps in the overall manufacturing process to remove such unwanted ingredients.
The polyhydroxy fatty acid amides comprise one class of surfactants which are currently being investigated for use in detergent compositions. One problem with this class of surfactants is that concentrated aqueous solutions containing them tend to precipitate and/or gel on storage, even at elevated temperatures (35.degree.-60.degree. C.). Moreover, low temperature storage of this family of amide surfactants is of great importance, since at elevated temperatures they are susceptible to degradation via hydrolysis of the amide bond to give the amine and the fatty acid. The polyhydroxy fatty acid amides stores below 35.degree. C. this degradation is negligible, i.e. less than 5-10% per year, but at elevated temperatures it becomes highly significant, rising to about 10% per month at 50.degree. C. and about 20-25% per month at 60.degree. C.
Having due regard for the foregoing considerations, the present invention provides a method for preparing storage-stable, pumpable fluid compositions which contain relatively high concentrations of polyhydroxy fatty acid amide surfactants. Moreover, the invention provides such fluid compositions using ingredients which are either innocuous in the finished detergent composition, or which can provide desirable benefits to said finished compositions. Accordingly, removal of such ingredients is not required.
BACKGROUND ART
The manufacture of polyhydroxy fatty acid amides is disclosed in the art. The following references are illustrative of manufacturing processe
REFERENCES:
patent: 1985424 (1934-12-01), Piggott
patent: 2016962 (1935-10-01), Flint
patent: 2703798 (1955-03-01), Schwartz
patent: 2965576 (1960-12-01), Wilson
patent: 2993887 (1961-07-01), Zech
patent: 3654166 (1972-04-01), Eckert et al.
patent: 4840746 (1989-06-01), Shiozaki et al.
patent: 5009814 (1991-04-01), Kelkenberg et al.
patent: 5158778 (1992-10-01), Donovan et al.
patent: 5174927 (1992-12-01), Honsa
patent: 5230823 (1993-07-01), Wise et al.
patent: 5234617 (1993-08-01), Hunter et al.
patent: 5238009 (1993-08-01), Speckman et al.
patent: 5334764 (1994-08-01), Scheibel et al.
patent: 5510047 (1996-04-01), Gabriel et al.
Kelkenberg, H., "Detergents Based on Sugars: New Components for Laundry Product Raw Materials and Cosmetics", Tenside Surfactants Detergents, vol. 25, #1 (1988) (English translation provided). No month available.
Hildreth, J.E.K., "N-D-Gluco-N-Methylalkanamide Compounds, a New Class of Non-ionic Detergents for Membrane Biohemistry", Biochem. J., vol. 207 (1982), pp. 363-366. No month available.
International Search Report dated Nov. 24, 1993, for PCT/US93/09578.
Blake Alan David
Boutique Jean-Pol
Delplancke Patrick Firmin
Geudens Jozef Philomena
Hertzog Ardith
Rasser Jacobus C.
Reed T. David
The Procter & Gamble & Company
Yetter Jerry J.
LandOfFree
High active premix based on polyhydroxy fatty acid amides for us does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with High active premix based on polyhydroxy fatty acid amides for us, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High active premix based on polyhydroxy fatty acid amides for us will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1492346