US4339356A
Expired / Lapsed
US
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Heavily perfumed particles
Assignee: Procter and Gamble Co
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Filing: 1980-12-31
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Granted: 1982-07-13
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Expires: 2000-12-31
Abstract
Abstract Heavily perfumed detergent compositions having both immediate and long lasting perfume emitting properties are prepared by a process in which perfume is emulsified in a water solution of water-soluble polymer, and the emulsion is mixed with a powdered hydratable material, in such a ratio that all of the water in the emulsion can be bound in the resulting hydrate, eliminating a separate drying step. The result is a dry, free flowing granular material which can be readily dry mixed into fully formulated detergent compositions. The perfume is retained in the polymeric matrix and is released at the point of product use when contacted with water.
Inventors
- 👤 David D. Whyte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:04
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/72; A61K8/81; A61K8/8164; A61K8/02; A61K8/0241; A61L; A61L9/00; A61L9/015; A61L9/04; A61L9/05; A61Q; A61Q13/00; C; C11; C11D; C11D3/00; C11D3/50; C11D3/502; C11D3/505; A61K2800/00; A61K2800/40; A61K2800/56
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
98 words
Heavily perfumed particles having both immediate and long lasting perfume emitting properties, consisting essentially of from about 0.5% to about 40% water-insoluble perfume, from about 1.5% to about 20% of a water-soluble polymer which will dissolve in water at a temperature of less than 100° C., from about 0.01% to about 5% of an emulsifier, from about 10% to about 90% water, and from about 1.5% to about 75% by weight of a hydratable material, the amount of the hydratable material being sufficient to hold at least about 85% of the water is said particles when fully hydrated.
Claim 2
Dependent Claim
98 words
Heavily perfumed particles having both immediate and long lasting perfume emitting properties, consisting essentially of from about 0.5% to about 40% water-insoluble perfume, from about 1.5% to about 20% of a water-soluble polymer which will dissolve in water at a temperature of less than 100° C., from about 0.01% to about 5% of an emulsifier, from about 10% to about 90% water, and from about 1.5% to about 75% by weight of a hydratable material, the amount of the hydratable material being sufficient to hold at least about 85% of the water is said particles when fully hydrated.
Claim 3
Dependent Claim
40 words
Particles according to claim 1 wherein the water soluble polymer is a member selected from the group consisting of: poly(methyl vinyl ether/maleic anhydride), poly(ethylene oxides), poly(acrylamides), poly(acrylic acid), polyvinyl pyrrolidones, polyethylene glycols, cellulose derivatives, polyvinyl alcohols, and poly(acrylic acid) derivatives.
Claim 4
Dependent Claim
15 words
Particles according to claim 2 wherein the water soluble polymer is poly(methyl vinyl ether/maleic anhydride).
Claim 5
Dependent Claim
49 words
Particles according to claim 1 wherein the hydratable material is a member selected from the group consisting of: alkali metal halides, alkali metal carbonates, alkali metal silicates, alkali metal sulfates, alkali metal borates, alkali metal phosphates, alkali metal polyphosphates, alkali metal bicarbonates, zeolite molecular sieves, and expandable smectite clays.
Claim 6
Dependent Claim
12 words
Particles according to claim 4 wherein the hydratable material is sodium tripolyphosphate.
Claim 7
Dependent Claim
37 words
Particles according to claim 4 wherein the hydratable material is a zeolite molecular sieve material having, in the anhydrous state, a hydration capacity of from about 15 to about 30 grams of water per gram of material.
Claim 8
Dependent Claim
129 words
A process for producing heavily perfumed particles having both immediate and long lasting perfume emitting properties comprising the steps of (a) forming an aqueous dispersion consisting essentially of from 2% to 40% of a water-insoluble perfume, from 5% to 20% of a water-soluble polymer which will dissolve in water at a temperature of less than 100° C., from 40% to 90% water, and sufficient emulsifier to emulsify the perfume in the dispersion; (b) cooling the dispersion of step (a) to about 0° C. or less; (c) mixing the cooled dispersion of step (b) with an amount of anhydrous, hydratable material sufficient to hold at least about 85% of the water in the dispersion when fully hydrated; and (d) warming the mixture of step (c), while mixing, to ambient temperature.
Claim 9
Dependent Claim
129 words
A process for producing heavily perfumed particles having both immediate and long lasting perfume emitting properties comprising the steps of (a) forming an aqueous dispersion consisting essentially of from 2% to 40% of a water-insoluble perfume, from 5% to 20% of a water-soluble polymer which will dissolve in water at a temperature of less than 100° C., from 40% to 90% water, and sufficient emulsifier to emulsify the perfume in the dispersion; (b) cooling the dispersion of step (a) to about 0° C. or less; (c) mixing the cooled dispersion of step (b) with an amount of anhydrous, hydratable material sufficient to hold at least about 85% of the water in the dispersion when fully hydrated; and (d) warming the mixture of step (c), while mixing, to ambient temperature.
Claim 10
Dependent Claim
15 words
A process according to claim 7 wherein the dispersion is cooled without freezing the dispersion.
Claim 11
Dependent Claim
35 words
A process according to claim 7 wherein the dispersion is cooled to below its freezing point and which further comprises the step of comminuting the frozen dispersion prior to mixing with the anhydrous hydratable material.
Claim 12
Dependent Claim
30 words
A process according to claim 7 which further comprises the step of cooling the anhydrous hydratable material to about 0° C. or less prior to mixing with the aqueous dispersion.
Claim 13
Dependent Claim
42 words
A process according to claim 7 wherein the water soluble polymer is a member selected from the group consisting of: poly(methyl vinyl ether/maleic anhydride), poly(ethylene oxides), poly(acrylamides), poly(acrylic acid), poly vinyl pyrrolidones, polyethylene glycols, cellulose derivatives, polyvinyl alcohols, and poly(acrylic acid) derivatives.
Claim 14
Dependent Claim
50 words
A process according to claim 7 wherein the hydratable material is a member selected from the group consisting of: alkali metal halides, alkali metal carbonates, alkali metal silicates, alkali metal sulfates, alkali metal borates, alkali metal phosphates, alkali metal polyphosphates, alkali metal bicarbonates, zeolite molecular sieves, and expandable smectite clays.
References Cited (Backward Citations)
US3804796A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-07-12 | 1986-01-11 | 1986-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-07-12 | 1990-01-11 | 1990-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-07-12 | 1994-01-11 | 1994-07-13 | $7700.00 | Window Closed / Lapsed |