US4606849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Perfumery compositions
Assignee: Bush Boake Allen Ltd
•
Filing: 1985-01-29
•
Granted: 1986-08-19
•
Expires: 2005-01-29
Abstract
Abstract 3,3-Dimethyl-1,5-dioxaspiro [5,5] undecane is useful in perfumery compositions. It can be made economically by reaction of cyclohexanone with neopentyl glycol in the presence of an acid, generally paratoluene sulphonic acid, under dehydrating conditions, generally by refluxing with a non-polar solvent.
Inventors
- 👤 Hifzur R. Ansari
- 👤 Alfred A. Schleppnik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 02:04
CPC Classifications
C; C07; C07D; C07D319/00; C07D319/04; C07D319/08; C11; C11B; C11B9/00; C11B9/0069; C11B9/0073; C11B9/0088
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
12 words
A perfumery composition comprising 3,3-dimethyl-1,5-dioxaspiro [5,5] undecane and a perfumery composition carrier.
Claim 2
Dependent Claim
12 words
A perfumery composition comprising 3,3-dimethyl-1,5-dioxaspiro [5,5] undecane and a perfumery composition carrier.
Claim 3
Dependent Claim
13 words
A composition according to claim 1 including at least one other odiferous compound.
Claim 4
Dependent Claim
31 words
A composition according to claim 1 which comprises 3 to 40% by weight of 3,3-dimethyl-1,5-dioxaspiro [5,5] undecane and that is a perfumery concentrate that can be incorporated into a consumer composition.
Claim 5
Dependent Claim
22 words
A composition according to claim 1 that is a consumer composition selected from shampoos, creams, lotions, room sprays, cleansers, soaps and detergents.
Claim 6
Dependent Claim
24 words
A process in which 3,3-dimethyl-1,5-dioxaspiro [5,5] undecane is made by reacting cyclohexanone with neopentyl glycol in the presence of an acid under dehydrating conditions.
Claim 7
Dependent Claim
24 words
A process in which 3,3-dimethyl-1,5-dioxaspiro [5,5] undecane is made by reacting cyclohexanone with neopentyl glycol in the presence of an acid under dehydrating conditions.
Claim 8
Dependent Claim
14 words
A process according to claim 5 in which the acid is paratoluene sulphonic acid.
Claim 9
Dependent Claim
23 words
A process according to claim 5 conducted by refluxing cyclohexanone, neopentyl glycol and a non-polar solvent in the presence of paratoluene sulphonic acid.
References Cited (Backward Citations)
US3901920A
Cited
US4113664A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-08-18 | 1990-02-17 | 1990-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-08-18 | 1994-02-17 | 1994-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-08-18 | 1998-02-17 | 1998-08-19 | $7700.00 | Window Closed / Lapsed |