US5876755A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Humidity resistant composition
Assignee: Givaudan Nederland Services BV
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Filing: 1994-02-17
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Granted: 1999-03-02
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Expires: 2014-02-17
Abstract
Abstract Disclosed is a composition comprising a substance encapsulated within a water-sensitive matrix so as to be releasable upon contact with water or aqueous solutions, mixed with particles of inorganic carrier material carrying a poorly water-soluble oil, such that the composition is stable at high relative humidity. Also disclosed are consumer products comprising said compositions and methods for making said compositions.
Inventors
- 👤 Keith Douglas Perring
- 👤 Richard Arthur Birch
- 👤 Jeremy Nicholas Ness
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:56
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/39; C11D3/3902; C11D3/3905; C11D3/3935; A; A61; A61K; A61K8/00; A61K8/02; A61K8/11; A61K8/18; A61K8/19; A61K8/25; A61Q; A61Q13/00; C11D17/00; C11D17/0039; C11D3/3932; C11D3/50; C11D3/502; C11D3/505; A61K2800/00; A61K2800/40; A61K2800/41; A61K2800/412; A61K2800/56
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
89 words
A composition which has been obtained by: (a) preparing first particles of an encapsulate comprising a substance which is encapsulated within a water-sensitive matrix, said substance being releasable upon contact with water or aqueous solutions and (b) preparing second particles of inorganic carrier material which carry a poorly water-soluble oil, and (c) subsequently mixing said first particles and said second particles, said composition being stable at high relative humidity which, in the absence of said second particles results in breakdown of the encapsulate and premature release of the substance.
Claim 2
Dependent Claim
89 words
A composition which has been obtained by: (a) preparing first particles of an encapsulate comprising a substance which is encapsulated within a water-sensitive matrix, said substance being releasable upon contact with water or aqueous solutions and (b) preparing second particles of inorganic carrier material which carry a poorly water-soluble oil, and (c) subsequently mixing said first particles and said second particles, said composition being stable at high relative humidity which, in the absence of said second particles results in breakdown of the encapsulate and premature release of the substance.
Claim 3
Dependent Claim
21 words
A composition according to claim 1, wherein the substance encapsulated in a water-sensitive matrix comprises a perfume, flavour or cosmetic ingredient.
Claim 4
Dependent Claim
18 words
A composition according to claim 1, wherein the substance encapsulated in a water-sensitive matrix comprises an organometallic complex.
Claim 5
Dependent Claim
14 words
A composition according to claim 3, wherein the organometallic complex comprises a bleach catalyst.
Claim 6
Dependent Claim
31 words
A composition according to claim 4, wherein the organometallic complex has one of the following formulae: Mn.sub.2 (μ-O).sub.3 (1,4,7-Me.sub.3 TACN).sub.2 !(PF.sub.6).sub.2 or Mn.sub.2 (μ-O).sub.3 (1,2,4,7-Me.sub.4 TACN).sub.2 !(PF.sub.6).sub.2, where TACN is 1,4,7-triazacyclononane.
Claim 7
Dependent Claim
27 words
A composition according to claim 1, wherein the water-sensitive matrix comprises starch, modified starch, maltodextrin, cyclodextrin, gums, resins, polyvinyl pyrrolidine, polyvinyl alcohol, cellulose esters, or combinations thereof.
Claim 8
Dependent Claim
23 words
A composition according to claim 1, wherein an inorganic carrier material is used having a mean particle diameter of less than 20 nm.
Claim 9
Dependent Claim
14 words
A composition according to claim 7, wherein the inorganic carrier material comprises fumed silica.
Claim 10
Dependent Claim
24 words
A composition according to claim 8 which comprises an additional inorganic carrier material comprising one or more of precipitated silica, silica gel, and zeolite.
Claim 11
Dependent Claim
22 words
A composition according to claim 9, wherein the ratio of fumed silica to additional inorganic carrier material is between 1:0 and 1:20.
Claim 12
Dependent Claim
28 words
A composition according to claim 1, wherein the substance encapsulated within the water sensitive matrix is also a poorly water-soluble oil and comprises 15-80% w/w of the encapsulate.
Claim 13
Dependent Claim
26 words
A composition according to claim 1, wherein the substance encapsulated within the water sensitive matrix is an organometallic complex and comprises 1-50% w/w of the encapsulate.
Claim 14
Dependent Claim
19 words
A composition according to claim 1, wherein the particles of inorganic carrier material comprise 0.1-80% w/w poorly water-soluble oil.
Claim 15
Dependent Claim
19 words
A composition according to claim 13, wherein the particles of inorganic carrier material comprise 40-60% w/w poorly water-soluble oil.
Claim 16
Dependent Claim
23 words
A composition according to claim 1, wherein the ratio of encapsulate to inorganic carrier material is in the range of 25:1 to 1:25.
Claim 17
Dependent Claim
23 words
A composition according to claim 15, wherein the ratio of encapsulate to inorganic carrier material is in the range of 1:1 to 1:20.
Claim 18
Dependent Claim
16 words
A composition according to claim 1, wherein the encapsulate is stable at 33° C./90% relative humidity.
Claim 19
Dependent Claim
13 words
A solid, substantially dry consumer product comprising a composition according to claim 1.
Claim 20
Dependent Claim
35 words
A consumer product according to claim 18 wherein the total amount of the substance encapsulated within a water-sensitive matrix and of the poorly water-soluble oil within the organic carrier material is in the range 0.01-10%.
Claim 21
Dependent Claim
33 words
A consumer product according to claim 18 selected from the group consisting of laundry powder, talc, autodishwash powder, soap, non-soap detergent bars, sheet conditioners, rim blocks, carpet shampoos, aqueous air fresheners and deodorants.
Claim 22
Dependent Claim
18 words
A composition according to claim 1 wherein the composition is stable at 90% relative humidity at 33° C.
References Cited (Backward Citations)
US3681248A
Cited
US3868336A
Cited
US3821436A
Cited
US4162987A
Cited
US4417994A
Cited
FR2528700A1
Cited
US5188753A
Cited
US5434069A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-03-01 | 2002-08-31 | 2003-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-03-01 | 2006-08-31 | 2007-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-03-01 | 2010-08-31 | 2011-03-02 | $7700.00 | Window Closed / Lapsed |