US4882220A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fibrous structures having a durable fragrance
Assignee: Kanebo Ltd
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Filing: 1989-01-26
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Granted: 1989-11-21
•
Expires: 2009-01-26
Abstract
Abstract A fragrant fibrous structure, such as fabrics, apparels or the like, provided with microcapsules encapsulating a perfume and a resinous binder, preferably a silicone resin in a weight ratio of 2/1 to 1/5, an add-on amount in the aggregate of said microcapsules and resinous binder being 0.3˜7.0% based on the weight of the portion to which said microcapsules and resinous binder are adhered, of the fibrous structure. The process for preparing the above fibrous structures comprises applying a treating liquid comprising microcapsules composed of an external wall of a formaldehyde based resin enclosing a perfume and a resinous binder, preferably a low temperature reactive organopolysiloxane prepolymer emulsion, preferably together with a pressure absorbing agent, to at least a part of a fibrous structure and then drying the fibrous structure at a temperature of less than 150° C. to fix said microcapsules on fiber surfaces of the fibrous structure.
Inventors
- 👤 Akira Ono
- 👤 Toshikazu Fuse
- 👤 Osamu Miyamoto
- 👤 Shoso Makino
- 👤 Yoshihisa Yamato
- 👤 Hiroshi Kametani
- 👤 Susumu Tokura
- 👤 Hiromi Tanaka
- 👤 Toru Ito
- 👤 Hitomi Nakao
- 👤 Shuji Tokuoka
- 👤 Toshihide Takeda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:50
CPC Classifications
D; D06; D06M; D06M23/00; D06M23/12; D06M13/00; D06M13/005; Y; Y10; Y10S; Y10S428/00; Y10S428/905; Y10T; Y10T428/00; Y10T428/25; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2993; Y10T428/2995; Y10T428/2998; Y10T442/00; Y10T442/20; Y10T442/2303
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
68 words
A fragrant fibrous structure which has microcapsules encapsulating a perfume adhered thereto by a resinous binder, the weight ratio of said microcapsules to said resinous binder being between 2:1 and 1:5, and the sum of the amounts of said microcapsules and resinous binder being between 0.3 and 7.0%, based on the weight of the portion of the fibrous structure to which said microcapsules and resinous binder are adhered.
Claim 2
Dependent Claim
68 words
A fragrant fibrous structure which has microcapsules encapsulating a perfume adhered thereto by a resinous binder, the weight ratio of said microcapsules to said resinous binder being between 2:1 and 1:5, and the sum of the amounts of said microcapsules and resinous binder being between 0.3 and 7.0%, based on the weight of the portion of the fibrous structure to which said microcapsules and resinous binder are adhered.
Claim 3
Dependent Claim
31 words
A fragrant fibrous structure as claimed in claim 1, wherein said weight ratio is between 1:1 and 1:3 and the sum of said amounts is between 0.5 and 5.0% by weight.
Claim 4
Dependent Claim
36 words
A fragrant fibrous structure as claimed in claim 1, wherein said microcapsules are composed of an external wall comprising a formaldehyde based resin selected from the group consisting of a urea-formaldehyde resin and a melamine-formaldehyde resin.
Claim 5
Dependent Claim
18 words
A fragrant fibrous structure as claimed in claim 1, wherein said resinous binder contains a pressure absorbing agent.
Claim 6
Dependent Claim
17 words
A fragrant fibrous structure as claimed in claim 1, wherein said resinous binder comprises a silicone resin.
Claim 7
Dependent Claim
19 words
A fragrant fibrous structure as claimed in claim 1, wherein said resinous binder comprises an acrylic or methacrylic resin.
Claim 8
Dependent Claim
16 words
A fragrant fibrous structure as claimed in claim 1, wherein said resinous binder comprises a polyalkylene.
Claim 9
Dependent Claim
26 words
A fragrant fibrous structure as claimed in claim 1, wherein said resinous binder comprises a polyester resin formed from a polyhydric alcohol and a polybasic acid.
Claim 10
Dependent Claim
23 words
A fragrant fibrous structure as claimed in claim 1, wherein said resinous binder comprises a polyurethane formed from a diisocyanate and a polyol.
Claim 11
Dependent Claim
26 words
A fragrant fibrous structure comprising fibers having s fineness of 0.7 denier or less/filament, which retains microcapsules encapsulating a perfume in interstices of the fibrous structure.
Claim 12
Dependent Claim
26 words
A fragrant fibrous structure comprising fibers having s fineness of 0.7 denier or less/filament, which retains microcapsules encapsulating a perfume in interstices of the fibrous structure.
Claim 13
Dependent Claim
31 words
A fragrant fibrous structure as claimed in claim 10, wherein said fibrous structure has an interstice ratio of 80% or less and said microcapsules have an average diameter of 1˜50 μ.
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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) | 1992-11-20 | 1993-05-22 | 1993-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-11-20 | 1997-05-22 | 1997-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-11-20 | 2001-05-22 | 2001-11-21 | $7700.00 | Window Closed / Lapsed |