US4511495A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tumble dryer products for depositing perfume
Assignee: Lever Brothers Co
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Filing: 1981-04-28
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Granted: 1985-04-16
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Expires: 2001-04-28
Abstract
Abstract Perfume may be deposited on fabrics by drying wet fabrics in a rotary hot air dryer together with a conditioning composition containing (i) a fabric conditioning agent such as a fabric softener and (ii) particles containing an intimate mixture of a perfume and an amine, particularly a primary or tertiary amine, having an alkyl substituent with from 1 to 22 carbon atoms. The particles may also contain nonionic materials. The conditioning composition may be coated on a substrate, suspended in a liquid medium for spraying onto the fabrics or onto the surfaces of the dryer, or may be in the form of a paste for applying to some of the fabrics before drying. Alternatively the composition may be in particulate form for sprinkling onto the fabrics. The method leads to efficient use of the perfume.
Inventors
- 👤 James B. Melville
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:59
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/0005; C11D3/001; C11D1/00; C11D1/38; C11D1/40; C11D17/00; C11D17/04; C11D17/041; C11D17/047; C11D3/0015; C11D3/16; C11D3/26; C11D3/30; C11D3/50; C11D3/502; C11D3/505; Y; Y10; Y10S; Y10S428/00; Y10S428/905; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249954; Y10T442/00; Y10T442/20; Y10T442/2303
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
228 words
A method of depositing perfume on fabrics in a rotary hot air dryer in which a perfume-containing fabric conditioning composition is placed in the dryer before, simultaneously with, or after the addition of wet fabrics to the dryer and the dryer is then operated to dry the fabrics, characterised in that said fabric conditioning composition comprises (i) a first phase constituting from about 0.5% to about 50% by weight of the composition and consisting of particles having an average size of from about 0.1 micron to about 200 microns, the particles comprising an intimate mixture of (a) from about 0.5% to about 50% by weight, based on the weight of the particles, of a perfume, and (b) from about 50% to about 99.5% by weight, based on the weight of the particles of a matrix comprising at least one water dispersible amine of the formula R--N R.sup.1 R.sup.2 where R is an alkyl or alkenyl group having from 8 to 22 carbon atoms, R 1 is hydrogen or an alkyl or alkenyl group having 1 to 4 carbon atoms and R 2 is hydrogen or an alkyl, alkenyl or amino-alkyl group having from 1 to 22 carbon atoms, the matrix containing no added cationic material; and (ii) a second phase constituting from about 0.5% to about 80% by weight of the composition and comprising a fabric conditioning agent.
Claim 2
Independent Claim
228 words
A method of depositing perfume on fabrics in a rotary hot air dryer in which a perfume-containing fabric conditioning composition is placed in the dryer before, simultaneously with, or after the addition of wet fabrics to the dryer and the dryer is then operated to dry the fabrics, characterised in that said fabric conditioning composition comprises (i) a first phase constituting from about 0.5% to about 50% by weight of the composition and consisting of particles having an average size of from about 0.1 micron to about 200 microns, the particles comprising an intimate mixture of (a) from about 0.5% to about 50% by weight, based on the weight of the particles, of a perfume, and (b) from about 50% to about 99.5% by weight, based on the weight of the particles of a matrix comprising at least one water dispersible amine of the formula R--N R.sup.1 R.sup.2 where R is an alkyl or alkenyl group having from 8 to 22 carbon atoms, R 1 is hydrogen or an alkyl or alkenyl group having 1 to 4 carbon atoms and R 2 is hydrogen or an alkyl, alkenyl or amino-alkyl group having from 1 to 22 carbon atoms, the matrix containing no added cationic material; and (ii) a second phase constituting from about 0.5% to about 80% by weight of the composition and comprising a fabric conditioning agent.
Claim 3
Dependent Claim
19 words
A method according to claim 1, characterised in that the fabric conditioning composition is supported on a flexible substrate.
Claim 4
Dependent Claim
26 words
A method according to claim 1, characterised in that the fabric conditioning composition is in particulate form and is sprinkled over the fabrics in the dryer.
Claim 5
Dependent Claim
37 words
A method according to claim 1, characterised in that the fabric conditioning composition is in liquid form and is sprayed onto the inside surfaces of the dryer and/or onto the fabrics prior to operation of the dryer.
Claim 6
Dependent Claim
37 words
A method according to claim 1, characterised in that the fabric conditioning composition is in the form of a paste or cream which is applied to a portion of the fabrics prior to operation of the dryer.
Claim 7
Dependent Claim
203 words
A product for depositing perfume on fabrics in a rotary hot air dryer, comprising a fabric conditioning composition supported on a flexible substrate, characterised in that said fabric conditioning composition comprises (i) a first phase constituting from about 0.5% to about 50% by weight of the composition and consisting of particles having an average size of from about 0.1 micron to about 200 microns, the particles comprising an intimate mixture of (a) from about 0.5% to about 50% by weight, based on the weight of the particles, of a perfume, and (b) from about 50% to about 99.5% by weight, based on the weight of the particles of a matrix comprising at least one water dispersible amine of the formula R--N R.sup.1 R.sup.2 where R is an alkyl or alkenyl group having from 8 to 22 carbon atoms, R 1 is hydrogen or an alkyl or alkenyl group having 1 to 4 carbon atoms and R 2 is hydrogen or an alkyl, alkenyl or amino-alkyl group having from 1 to 22 carbon atoms, the matrix containing no added cationic material; and (ii) a second phase constituting from about 0.5% to about 80% by weight of the composition and comprising a fabric conditioning agent.
Claim 8
Dependent Claim
203 words
A product for depositing perfume on fabrics in a rotary hot air dryer, comprising a fabric conditioning composition supported on a flexible substrate, characterised in that said fabric conditioning composition comprises (i) a first phase constituting from about 0.5% to about 50% by weight of the composition and consisting of particles having an average size of from about 0.1 micron to about 200 microns, the particles comprising an intimate mixture of (a) from about 0.5% to about 50% by weight, based on the weight of the particles, of a perfume, and (b) from about 50% to about 99.5% by weight, based on the weight of the particles of a matrix comprising at least one water dispersible amine of the formula R--N R.sup.1 R.sup.2 where R is an alkyl or alkenyl group having from 8 to 22 carbon atoms, R 1 is hydrogen or an alkyl or alkenyl group having 1 to 4 carbon atoms and R 2 is hydrogen or an alkyl, alkenyl or amino-alkyl group having from 1 to 22 carbon atoms, the matrix containing no added cationic material; and (ii) a second phase constituting from about 0.5% to about 80% by weight of the composition and comprising a fabric conditioning agent.
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) | 1988-04-15 | 1988-10-15 | 1989-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-15 | 1992-10-15 | 1993-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-15 | 1996-10-15 | 1997-04-16 | $7700.00 | Window Closed / Lapsed |