US5154842A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coated perfume particles
Assignee: Procter and Gamble Co
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Filing: 1991-02-01
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Granted: 1992-10-13
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Expires: 2011-02-01
Abstract
Abstract Perfume particles comprise perfume dispersed within certain water-insoluble nonpolymeric 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 cleaning compositions. 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
- 👤 Darlene R. Walley
- 👤 Howard J. Buttery
- 👤 Robert J. Norbury
- 👤 Diane G. Scmidt
- 👤 William R. Michael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:12
CPC Classifications
C; C11; C11D; C11D17/00; C11D17/0039; C11D3/00; C11D3/50; C11D3/502; C11D3/505
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
111 words
A softener composition, comprising one or more fabric- or fiber-softening or antistatic agents, and perfume particles which comprise from about 5% to about 50% by weight of a perfume dispersed in from about 50% to about 95% by weight of a non solid fatty alcohols or fatty ester carrier material, or mixtures thereof, said alcohols or esters having a molecular weight of from about 100 to about 500, a melting point of from about 37° C. to about 80° C., said alcohols or esters being substantially water-insoluble, said particles having a substantially water-insoluble friable coating on their outer surfaces, said coated particles having an average size less than about 350 microns.
Claim 2
Dependent Claim
111 words
A softener composition, comprising one or more fabric- or fiber-softening or antistatic agents, and perfume particles which comprise from about 5% to about 50% by weight of a perfume dispersed in from about 50% to about 95% by weight of a non solid fatty alcohols or fatty ester carrier material, or mixtures thereof, said alcohols or esters having a molecular weight of from about 100 to about 500, a melting point of from about 37° C. to about 80° C., said alcohols or esters being substantially water-insoluble, said particles having a substantially water-insoluble friable coating on their outer surfaces, said coated 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
14 words
A composition according to claim 1 wherein the friable coating is an aminoplast polymer.
Claim 5
Dependent Claim
36 words
A composition according to claim 3 wherein the coating is the reaction product of an amine selected from urea and melamine, or mixtures thereof, and the aldehyde is selected from formaldehyde, acetaldehyde, glutaraldehyde, or mixtures thereof.
Claim 6
Dependent Claim
18 words
A composition according to claim 4 wherein the coating comprises 1% to 30% by weight of the particles.
Claim 7
Dependent Claim
21 words
A composition according to claim 5 wherein the carrier material comprises an alcohol selected from the C 14 -C 18 alcohols.
Claim 8
Dependent Claim
19 words
A composition according to claim 5 wherein the carrier material is an ester comprising at least 18 carbon atoms.
Claim 9
Dependent Claim
63 words
A softener composition comprising the perfumed particles of claim 6, and a fabric- or fiber-softening or antistatic agent selected from ##STR3## wherein each R is in the C 15 -C 18 alkyl range; and (R 1 ) 2 (CH 3 ) 2 N+X-, wherein each R 1 group is C 12 -C 18 alkyl; and mixtures thereof; and wherein X is an anion.
Claim 10
Dependent Claim
95 words
A method for delivering perfume-releasing particles to the surface of fabrics undergoing a laundering or softening process in a laundering apparatus, comprising adding to said laundering apparatus a detergent composition or a fabric softening composition containing particles according to claim 1, and operating said apparatus in standard fashion with agitation of the machine liquor and fabrics, whereupon the agitation associated with said operation ruptures the coating on said particles, or fractures the particles themselves, sufficiently to allow release of the perfume when said particles become deposited onto said fabrics during said laundering or softening process.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-10-13 | 1996-04-13 | 1996-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-10-13 | 2000-04-13 | 2000-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-10-13 | 2004-04-13 | 2004-10-13 | $7700.00 | Window Closed / Lapsed |