US5188753A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detergent composition containing coated perfume particles
Assignee: Procter and Gamble Co
•
Filing: 1991-06-21
•
Granted: 1993-02-23
•
Expires: 2011-06-21
Abstract
Abstract Perfume particles comprise perfume dispersed within certain water-soluble polymeric carrier materials and encapsulated in a protective shell by coating with a friable coating material. The coated particles allow for preservation and protection of perfumes which are susceptible to degradation or loss in storage and in harsh cleaning conditions. In use, the surface coating fractures and the underlying carrier/perfume particles efficiently deliver a large variety of perfume types to fabrics or other surfaces.
Inventors
- 👤 Diane G. Schmidt
- 👤 Howard J. Buttery
- 👤 Robert J. Norbury
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:35
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/50; C11D3/502; C11D3/505; C11D17/00; C11D17/0039; C11D17/0047; C11D17/0065; C11D17/0069
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
179 words
A detergent composition, comprising one or more detersive surfactants selected from the group consisting of soap, alkyl benzene sulfonates, ethoxylated alcohols, alkyl surfates, and alkyl ethyloxylate sulfate, optionally, one or more builders, and perfume particles which comprise form about 5% to about 70% of a perfume dispersed in from about 30% to about 95% of a solid core comprising water-insoluble polymeric carrier material selected from the group consisting of polyethylenes, polyamides, polystyrene, polyisoprenes, polycarbonates, polyesters, polyacrylates, vinyl polymers, polyurethanes and mixtures thereof, said solid core polymeric carrier material having a molecular weight of from about 100 to about 30,000, a melting point of from about 37° C. to about 190° C., and a hardness value of from about 0.1 to about 15, said particles being encapsulated by having a friable coating on their outer surfaces, wherein said friable coating is the reaction product of an amine slected from urea and melamine or mixtures thereof and an aldehyde selected form formaldehyde, acetaldehyde, glutaraldehyde or mixtures thereof said coated, solid core particles having an average size less than about 350 microns.
Claim 2
Dependent Claim
179 words
A detergent composition, comprising one or more detersive surfactants selected from the group consisting of soap, alkyl benzene sulfonates, ethoxylated alcohols, alkyl surfates, and alkyl ethyloxylate sulfate, optionally, one or more builders, and perfume particles which comprise form about 5% to about 70% of a perfume dispersed in from about 30% to about 95% of a solid core comprising water-insoluble polymeric carrier material selected from the group consisting of polyethylenes, polyamides, polystyrene, polyisoprenes, polycarbonates, polyesters, polyacrylates, vinyl polymers, polyurethanes and mixtures thereof, said solid core polymeric carrier material having a molecular weight of from about 100 to about 30,000, a melting point of from about 37° C. to about 190° C., and a hardness value of from about 0.1 to about 15, said particles being encapsulated by having a friable coating on their outer surfaces, wherein said friable coating is the reaction product of an amine slected from urea and melamine or mixtures thereof and an aldehyde selected form formaldehyde, acetaldehyde, glutaraldehyde or mixtures thereof said coated, solid core particles having an average size less than about 350 microns.
Claim 3
Dependent Claim
20 words
A composition according to claim 1 wherein the average size of the coated particles is not greater than 150 microns.
Claim 4
Dependent Claim
18 words
A composition according to claim 2 wherein the coating comprises 1% to 10% by weight of the particles.
Claim 5
Dependent Claim
35 words
A composition according to claim 1 wherein the solid core polymeric carrier material has a molecular weight of from about 500 to about 5,000, and a hardness value of from about 0.1 to about 8.
Claim 6
Dependent Claim
35 words
A composition according to claim 2 wherein the solid core carrier material comprises polyethylene having a molecular weight of about 2,000, a melting point of about 126° C., and a hardness value of about 0.5.
Claim 7
Dependent Claim
9 words
A composition according to claim 1 in bar form.
Claim 8
Dependent Claim
11 words
A composition according to claim 1 which additionally comprises an abrasive.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-02-23 | 1996-08-24 | 1997-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-02-23 | 2000-08-24 | 2001-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-02-23 | 2004-08-24 | 2005-02-23 | $7700.00 | Window Closed / Lapsed |