US4899398A
Expired / Lapsed
US
⏱️ 0.0 years remaining
In-tank toilet dispenser
Assignee: SC Johnson and Son Inc
•
Filing: 1988-10-05
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Granted: 1990-02-13
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Expires: 2008-10-05
Abstract
Abstract Treatment of water-containing reservoirs with a cleaning composition including a water-dissipatable polyester polymer, the polyester polymer concentration in the reservoir being in an amount effective to capture heavy metal ions, thereby inhibiting staining. In a preferred embodiment, the polyester complexes a perfume, the perfume being released in dilute solution as in the reservoir, whereby a fragrance bloom is provided to the environment.
Inventors
- 👤 Richard S. Hutchings
- 👤 Carey B. Bottom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:53
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/37; C11D3/3703; C11D3/3715; C02; C02F; C02F5/00; C02F5/08; C02F5/10
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
124 words
An in-tank toilet dispenser containing a cleaning composition and adapted to release an effective cleaning amount of said composition into the toilet, said composition comprising up to about 15% surfactant, and from about 0.05 to about 10% by weight of the water-dissipatable polyester polymer which is the reaction product of (a) a difunctional dicarboxylic acid, (b) a difunctional sulfomonomer, and (c) a glycol or a glycol and diamine mixture, the polyester having an inherent viscosity of at least 0.1, the cleaning composition containing above about 65% water, the amount of said composition released from the dispenser being sufficient to provide a polymer concentration of from about 40 ppb to about 100 ppm, whereby heavy metal ions are captured by the polymer to inhibit staining.
Claim 2
Dependent Claim
124 words
An in-tank toilet dispenser containing a cleaning composition and adapted to release an effective cleaning amount of said composition into the toilet, said composition comprising up to about 15% surfactant, and from about 0.05 to about 10% by weight of the water-dissipatable polyester polymer which is the reaction product of (a) a difunctional dicarboxylic acid, (b) a difunctional sulfomonomer, and (c) a glycol or a glycol and diamine mixture, the polyester having an inherent viscosity of at least 0.1, the cleaning composition containing above about 65% water, the amount of said composition released from the dispenser being sufficient to provide a polymer concentration of from about 40 ppb to about 100 ppm, whereby heavy metal ions are captured by the polymer to inhibit staining.
Claim 3
Dependent Claim
62 words
The dispenser of claim 1 wherein the reactant (a) is selected from the group consisting of succinic, glutaric, adipic, fumaric, maleic, 1,4-cyclohexanedicarboxylic, phthalic and terephthalic acids; the reactant (b) is selected from the group consisting of sulfophthalic, sulfoterephthalic, sulfoisophthalic and 4-sulfonaphthalene-2,7-dicarboxylic acids, and the reactant (c) is selected from the group consisting of ethylene glycol, diethylene glycol, propylene glycol, p-ethylenediol and 1,3-cyclohexanedimethanol.
Claim 4
Dependent Claim
16 words
The dispenser of claim 2 wherein the polymer has an inherent viscosity of above about 0.3.
Claim 5
Dependent Claim
18 words
The dispenser composition of claim 2 wherein the polymer molecular weight is from about 10,000 to about 25,000.
Claim 6
Dependent Claim
17 words
The cleaning composition of claim 1 further comprising a perfume, the perfume being sequestered by said polyester.
Claim 7
Dependent Claim
62 words
The dispenser of claim 5 wherein the reactant (a) is selected from the group consisting of succinic, glutaric, adipic, fumaric, maleic, 1,4-cyclohexanedicarboxylic, phthalic and terephthalic acids; the reactant (b) is selected from the group consisting of sulfophthalic, sulfoterephthalic, sulfoisophthalic and 4-sulfonaphthanene-2,7-dicarboxylic acids, and the reactant (c) is selected from the group consisting of ethylene glycol, diethylene glycol, propylene glycol, p-ethylenediol and 1,3-cyclohexanedimethanol.
Claim 8
Dependent Claim
26 words
The dispenser of claim 6 containing from about 0.1 to 3% polyester, from about 0.05 to about 1.0% perfume, and from about 1% to 8% surfactant.
Claim 9
Dependent Claim
12 words
The dispenser of claim 7 wherein the perfume comprises an essential oil.
Claim 10
Dependent Claim
37 words
The dispenser of claim 7 wherein the perfume comprises a fragrance constituent selected from the group consisting of geraniol, citronellol, terpineol, citral, citronellal, eugenol, ionone, isobornyl acetate, isoamyl salicylate, methyl salicylate, gamma nonyl lactone, and mixtures thereof.
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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) | 1993-02-12 | 1993-08-14 | 1994-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-02-12 | 1997-08-14 | 1998-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-02-12 | 2001-08-14 | 2002-02-13 | $7700.00 | Window Closed / Lapsed |