Patent US3954964A successfully refreshed from Google Patents.
US3954964A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air reodorant compositions
Assignee: Shell Internationale Research Maatschappij BV
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Filing: 1974-03-04
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Granted: 1976-05-04
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Expires: 1994-03-04
Abstract
Abstract Long lived, slow-release air reodorant compositions comprise polyvinyl acetal resins gelled with alkyl salicylates. The gels may additionally contain one or more fragrances or perfumes, diluents or adjuvants, a minor amount of water, as well as dyes, surfactants, deodorants and other conventional additives.
Inventors
- 👤 Jerome G. Kuderna, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:29
CPC Classifications
A; A61; A61L; A61L9/00; A61L9/015; A61L9/04; A61L9/048
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
179 words
A gelled slow-release air reodorant composition comprising (1) as a fragrance from about 5 to about 90% by weight of a C 1 to C 8 alkyl salicylate in gelling interaction with (2) from about 10 to about 40% by weight of a polyvinyl acetal resin compatible with said salicylate, said polyvinyl acetal resin having a molecular weight of from about 30,000 to about 1,000,000 and consisting essentially of repeating vinyl acetal, vinyl alcohol and vinyl acetate groups represented by the structure: ##EQU2## wherein X is H, alkyl of 1-8 carbon atoms, haloalkyl of 1-8 carbon atoms, hydroxyalkyl of 1∝8 carbon atoms, alkenyl of 2-8 carbon atoms, halogen or hydroxyl; Y is alkyl of 1-9 carbon atoms; and u, v and w indicate the relative percent by weight of the respective vinyl acetal, vinyl alcohol, and vinyl ester groupings of the resin, and wherein u is from about 30 to about 90, v is from about 15 to about 25 and w is from 0 to about 30, and the sum of u + v + w equals 100.
Claim 2
Dependent Claim
179 words
A gelled slow-release air reodorant composition comprising (1) as a fragrance from about 5 to about 90% by weight of a C 1 to C 8 alkyl salicylate in gelling interaction with (2) from about 10 to about 40% by weight of a polyvinyl acetal resin compatible with said salicylate, said polyvinyl acetal resin having a molecular weight of from about 30,000 to about 1,000,000 and consisting essentially of repeating vinyl acetal, vinyl alcohol and vinyl acetate groups represented by the structure: ##EQU2## wherein X is H, alkyl of 1-8 carbon atoms, haloalkyl of 1-8 carbon atoms, hydroxyalkyl of 1∝8 carbon atoms, alkenyl of 2-8 carbon atoms, halogen or hydroxyl; Y is alkyl of 1-9 carbon atoms; and u, v and w indicate the relative percent by weight of the respective vinyl acetal, vinyl alcohol, and vinyl ester groupings of the resin, and wherein u is from about 30 to about 90, v is from about 15 to about 25 and w is from 0 to about 30, and the sum of u + v + w equals 100.
Claim 3
Dependent Claim
18 words
The composition of claim 1 wherein X is C 3 H 7 and Y is CH 3 .
Claim 4
Dependent Claim
48 words
The composition of claim 2 wherein the reodorant gel additionally contains from 0 to about 85% by weight of perfume, 0 to about 20% water and 0 to about 60% by weight organic diluent, said organic diluent being mutually compatible with said alkyl salicylate gellant and said perfume.
Claim 5
Dependent Claim
47 words
The composition of claim 3 wherein u is from about 75 to about 85, v is from about 17 to about 21, and w is from 0 to about 5, and the average molecular weight of the polyvinyl acetal resin is from about 180,000 to about 300,000.
Claim 6
Dependent Claim
74 words
The composition of claim 4 wherein the amount of alkyl salicylate is from about 10 to about 30% by weight, the amount of the resin is from about 15 to about 30% by weight, the amount of organic diluent is from about 10 to about 50% by weight, the amount of perfume is from about 1 to about 60% by weight and the amount of water is from 0 to about 10% by weight.
Claim 7
Dependent Claim
11 words
The composition of claim 5 wherein the diluent is a menthadiene.
Claim 8
Dependent Claim
17 words
The composition of claim 6 wherein the alkyl salicylate is methyl salicylate, ethyl salicylate or amyl salicylate.
Claim 9
Dependent Claim
12 words
The composition of claim 7 wherein the diluent is d- or l-limonene.
Claim 10
Dependent Claim
12 words
The composition of claim 6 wherein the alkyl salicylate is methyl salicylate.
References Cited (Backward Citations)
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US2927055A
Cited
US3655129A
Cited
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Cited
US3688985A
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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) | 1979-05-04 | 1979-11-03 | 1980-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-04 | 1983-11-03 | 1984-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-04 | 1987-11-03 | 1988-05-04 | $7700.00 | Window Closed / Lapsed |