Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – Heterogeneous arrangement
Patent
1996-03-12
1997-12-16
McGinty, Douglas J.
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
Heterogeneous arrangement
510451, 510350, 510351, 510356, 510502, C11D 1100
Patent
active
056985100
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention is concerned with granular detergent components or compositions which are rich in high performance nonionic surfactants. The compositions are based upon specified surfactant systems and processes which make it possible to produce very high surfactant active components.
BACKGROUND OF THE INVENTION
Nonionic surfactants are important components of current laundry detergent compositions. Present trends demand particulate components or compositions which have a high bulk density and which have a high level of nonionic surfactant. The particulate must have good physical characteristics, and must deliver nonionic surfactants which have been selected for high performance in to the wash. Various prior art attempts have been described which approach these demands from different perspectives. For example:
EP544492, published on 2nd Jun., 1993, discloses particulate high density detergent composition comprising 15 to 50% of a mixed anionic
onionic surfactant system. The nonionic surfactants chosen are ethoxylated alcohols having a peaked ethoxylation distribution with an average of about 3 to 6.5. Although fatty acid soaps are suggested as suitable structurants which modify the surfactant viscosity profile, the resulting granules where soap is used (in Examples 16 to 19, 24 to 29) have surfactant activities of 29 to 32.5%.
WO9206160, published on 16th Apr., 1992, discloses high performing nonionic surfactant systems based on mixtures of glucose amides and ethoxylated nonionic surfactants. In one example (example 20) a component is described which comprises a nonionic surfactant system which is a mixture of 20% Dobanol (Trade Name) EO3 and 80% N-methyl glucose amide in aqueous solution. EP364881, published on 25th Apr. 1990, describes gels formed from polyglycol ether derivatives and water in ratios of from 5:1 to 1:2. The gels are formed into free-flowing granulates by mixing with finely divided solids.
The problem addressed by the present invention concerns the need to provide high density particulate laundry detergent which has a high nonionic surfactant content, and which does not cake or lump upon storage, even in hot, humid conditions, and which dissolves and disperses rapidly upon contact with water, even cold water, to give a high detergency performance on the washing load.
Whilst the prior art provides some guidance as to how each of these objectives might be independently achieved, there does not appear to be a solution to all of the aspects of the problem provided by any one reference.
The present invention provides a nonionic, or mixed nonionic/anionic, surfactant system having a specific viscosity profile which can be formed into a solid particulate which does not cake during storage, which dissolves rapidly and has an excellent performance profile.
SUMMARY OF THE INVENTION
In a first aspect, the present invention concerns a granular detergent composition or component having a bulk density of at least 650 g/l, comprising a surfactant system wherein said composition or component comprises from 35% to 85% by weight of nonionic surfactant and wherein said surfactant system is substantially in the solid phase at temperatures of 25.degree. C. and below, and that said surfactant system has a softening point above 25.degree. C. and wherein the surfactant system has a viscosity profile whereby the viscosity of the surfactant system is at least 20000 cps at a temperature of 10.degree. C. above the softening point, and less than 10000 cps at a temperature of 30.degree. C. above the softening point, all viscosities being measured at a shear rate of 25 s.sup.-1.
In a second aspect the present invention concerns specific combinations of the nonionic surfactant containing particle with other detergent components to produce a finished laundry detergent composition.
In a third aspect the present invention concerns a process for the manufacture of nonionic surfactant containing particles of the present invention.
DETAILED DESCRIPTION OF THE INVENTION
It has now been f
REFERENCES:
patent: 5364575 (1994-11-01), Doom, Sr. et al.
patent: 5366652 (1994-11-01), Capeci et al.
patent: 5468516 (1995-11-01), Yamashita et al.
patent: 5529715 (1996-06-01), Kuroda et al.
France Paul Amaat Raymond
Schmitt John Christian
Wilkinson Carole Patricia
Douyon Lorna M.
McGinty Douglas J.
Patel Ken K.
Rasser Jacobus C.
The Procter & Gamble & Company
LandOfFree
Process for making granular detergent compositions comprising no does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for making granular detergent compositions comprising no, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for making granular detergent compositions comprising no will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-205898