Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – Heterogeneous arrangement
Patent
1999-07-09
2000-04-04
Douyon, Lorna M.
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
Heterogeneous arrangement
510452, 510299, 510475, 510499, 510503, 510504, 510528, C11D 1100
Patent
active
060461535
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to a spray drying process for producing laundry detergent compositions that contain modified polyamines especially useful as cotton soil release and dispersant agents. More specifically, the process involves premixing the modified polyamine with a surfactant paste or precursor thereof prior to subsequent addition and mixing of adjunct detergent ingredients. The overall mixture is thereafter subjected to a spray drying process so as to provide a spray-dried detergent composition having improved performance.
BACKGROUND OF THE INVENTION
Various fabric surface modifying agents have been commercialized and are currently used in detergent compositions and fabric softener/antistatic articles and compositions. Examples of surface modifying agents are soil release polymers. Soil release polymers typically comprise an oligomeric or polymeric ester "backbone" and are generally very effective on polyester or other synthetic fabrics where the grease or similar hydrophobic stains form an attached film and are not easily removed in an aqueous laundering process. The soil release polymers have a less dramatic effect on "blended" fabrics, that is, on fabrics that comprise a mixture of cotton and synthetic material, and have little or no effect on cotton articles.
Extensive research in this area has yielded significant improvements in the effectiveness of polyester soil release agents yielding materials with enhanced product performance and capability of being incorporated into detergent formulations. Modifications of the polymer backbone as well as the selection of proper end-capping groups have produced a wide variety of polyester soil release polymers. For example, end-cap modifications, such as the use of sulfoaryl moieties and especially the low cost isethionate-derived end-capping units, have increased the range of solubility and adjunct ingredient compatibility of these polymers without sacrifice to soil release effectiveness. Many polyester soil release polymers can now be formulated into both liquid as well as solid (i.e., granular) detergents.
As in the case of polyester soil release agents, producing an oligomeric or polymeric material that mimics the structure of cotton has not resulted in a cotton soil release polymer. Although cotton and polyester fabric are both comprised of long chain polymeric materials, they are chemically very different. Cotton is comprised of cellulose fibers that consist of anhydroglucose units joined by 1-4 linkages. These glycosidic linkages characterize the cotton cellulose as a polysaccharide whereas polyester soil release polymers are generally a combination of terephthalate and ethylene/propylene oxide residues. These differences in composition account for the difference in the fabric properties of cotton versus polyester fabric. Cotton is hydrophilic relative to polyester. Polyester is hydrophobic and attracts oily or greasy dirt and can be easily "dry cleaned". Importantly, the terephthalate and ethyleneoxy/propyleneoxy backbone of polyester fabric does not contain reactive sites, such as the hydroxyl moieties of cotton, that react with stains in a different manner than synthetics. Many cotton stains become "fixed" and can only be resolved by bleaching the fabric.
Until recently, the development of effective fabric surface modifying agents for use on cotton fabrics has been elusive. Attempts by others to apply the paradigm of matching the structure of a soil release polymer with the structure of the fabric, a method successful in the polyester soil release polymer field, have nevertheless yielded marginal results when applied to other fabric surface modifying agents, especially for cotton fabrics. For example, the use of methylcellulose, a cotton polysaccharide with modified oligomeric units, proved to be more effective on polyesters than on cotton.
Additionally, detergent formulators have been faced with the task of devising products to remove a broad spectrum of soils and stains from fabrics. The varieties of soils and s
REFERENCES:
patent: 3718597 (1973-02-01), Werdehausen et al.
patent: 3912681 (1975-10-01), Dickson
patent: 3948838 (1976-04-01), Hinton, Jr. et al.
patent: 4235735 (1980-11-01), Marco et al.
patent: 4548744 (1985-10-01), Connor
patent: 4559056 (1985-12-01), Leigh et al.
patent: 4579681 (1986-04-01), Ruppert et al.
patent: 4597898 (1986-07-01), Vander Meer
patent: 4614519 (1986-09-01), Ruppert et al.
patent: 4661288 (1987-04-01), Rubingh et al.
patent: 4664848 (1987-05-01), Oh et al.
patent: 4676921 (1987-06-01), Van der Meer
patent: 4689167 (1987-08-01), Collins et al.
patent: 4877896 (1989-10-01), Maldonado et al.
patent: 4891160 (1990-01-01), Vander Meer
patent: 4976879 (1990-12-01), Maldonado et al.
patent: 5133924 (1992-07-01), Appel et al.
patent: 5160657 (1992-11-01), Bortolotti et al.
patent: 5205958 (1993-04-01), Swatling et al.
patent: 5366652 (1994-11-01), Capeci et al.
patent: 5415807 (1995-05-01), Gosselink et al.
patent: 5486303 (1996-01-01), Capeci et al.
patent: 5565145 (1996-10-01), Watson et al.
patent: 5747440 (1998-05-01), Kellett et al.
patent: 5929010 (1999-07-01), Kellett et al.
patent: 5968893 (1999-10-01), Mandhar et al.
Chapman Benjamin Edgar
Lickiss James Robert
Watson Randall Alan
Bolam Brian M.
Douyon Lorna M.
Rasser Jacobus C.
The Procter & Gamble & Company
Zerby Kim William
LandOfFree
Spray drying process for producing detergent compositions involv does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Spray drying process for producing detergent compositions involv, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spray drying process for producing detergent compositions involv will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-364922