US4537708A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Homogeneous laundry detergent slurries containing nonionic surface-active agents
Assignee: FMC Corp
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Filing: 1983-08-30
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Granted: 1985-08-27
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Expires: 2003-08-30
Abstract
Abstract A stable, homogeneous, aqueous detergent slurry is described containing nonionic surface-active agents. The slurry contains about 14 weight percent to 30 weight percent of a sodium polyphoshate, about 1 weight percent to 5 weight percent of an alkali metal hydroxide or alkali metal salt, a soluble anionic surface-active agent, a soluble nonionic surface-active agent which is an alcohol alkoxylate having an HLB value of 4 to 9, wherein sodium polyphosphate is present as insoluble particles having an average diameter of about 1 to about 10 microns, the anionic and nonionic surface-active agents are present in a weight ratio of about 6.7:1 to 1.35:1, and the total amount of surface-active agents are from 13 weight percent to 20 weight percent.
Inventors
- 👤 Gale D. Downey
- 👤 Charles E. Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:12
CPC Classifications
C; C11; C11D; C11D1/00; C11D1/66; C11D1/83; C11D3/00; C11D3/02; C11D3/04; C11D3/044; C11D3/06; C11D1/02; C11D1/12; C11D1/14; C11D1/143; C11D1/146; C11D1/22; C11D1/72
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
158 words
A stable, homogeneous aqueous detergent slurry consisting essentially of: a. a sodium polyphosphate in amounts of from about 14 weight percent to about 30 weight percent, b. an alkali metal salt or alkali metal hydroxide in amounts of from about 1 weight percent to about 5 weight percent, c. a soluble, anionic surface-active agent selected from the group consisting of alkyl-, alkylaryl-, alkene-sulfate salts and alkyl-, alkylaryl-, and alkene-sulfonate salts, d. a soluble, nonionic surface-active agent which is an alcohol alkoxylate having a hydrophilic-lipophilic balance (HLB value) of from about 4 to about 9, e. said sodium polyphosphate being present in part as insoluble particles having an average diameter of about 1 to 10 microns, f. said anionic and nonionic surface-active agents being present in a weight ratio of about 6.7:1 to about 1.35:1, and g. the total amount of said surface-active agents in said detergent slurry being from about 13 weight percent to about 20 weight percent.
Claim 2
Dependent Claim
158 words
A stable, homogeneous aqueous detergent slurry consisting essentially of: a. a sodium polyphosphate in amounts of from about 14 weight percent to about 30 weight percent, b. an alkali metal salt or alkali metal hydroxide in amounts of from about 1 weight percent to about 5 weight percent, c. a soluble, anionic surface-active agent selected from the group consisting of alkyl-, alkylaryl-, alkene-sulfate salts and alkyl-, alkylaryl-, and alkene-sulfonate salts, d. a soluble, nonionic surface-active agent which is an alcohol alkoxylate having a hydrophilic-lipophilic balance (HLB value) of from about 4 to about 9, e. said sodium polyphosphate being present in part as insoluble particles having an average diameter of about 1 to 10 microns, f. said anionic and nonionic surface-active agents being present in a weight ratio of about 6.7:1 to about 1.35:1, and g. the total amount of said surface-active agents in said detergent slurry being from about 13 weight percent to about 20 weight percent.
Claim 3
Dependent Claim
13 words
The detergent slurry of claim 1 wherein the sodium polyphosphate is sodium tripolyphosphate.
Claim 4
Dependent Claim
29 words
The detergent slurry of claim 1 wherein said alkali metal salt and alkali metal hydroxide are selected from the group consisting of sodium carbonate, sodium hydroxide and sodium bicarbonate.
Claim 5
Dependent Claim
14 words
The detergent slurry of claim 1 wherein said alkali metal salt is sodium carbonate.
Claim 6
Dependent Claim
16 words
The detergent slurry of claim 1 wherein said soluble, anionic surface-active agent is sodium dodecylbenzene sulfonate.
Claim 7
Dependent Claim
15 words
The process of claim 1 wherein the soluble, anionic surface-active agent is sodium lauryl sulfate.
Claim 8
Dependent Claim
40 words
The detergent slurry of claim 1 wherein the soluble, nonionic surface-active agent is the reaction product of 1 mole of a C 9 -C 11 alcohol with 2.5 moles of ethoxylate, and which has an HLB value of about 8.1.
Claim 9
Dependent Claim
41 words
The detergent slurry of claim 1 wherein the soluble, nonionic surface-active agent is the reaction product of 1 mole of a C 12 -C 15 alcohol with 3 moles of an ethoxylate, and which has an HLB value of about 7.8.
Claim 10
Dependent Claim
37 words
The detergent slurry of claim 1 wherein the soluble, nonionic surface-active agent is the reaction product of 1 mole of octyl alcohol with 2 moles of an ethoxylate, and which has an HLB value of about 5.
Claim 11
Dependent Claim
40 words
The detergent slurry of claim 1 wherein the soluble, nonionic surface-active agent is the reaction product of 1 mole of C 11 -C 15 sec-alcohol with 3 moles of polyethylene oxide, and which has an HLB value of about 8.
Claim 12
Dependent Claim
42 words
The detergent slurry of claim 1 wherein said soluble, nonionic surface-active agent is the condensation product of ethylene oxide with a hydrophobic base prepared by reaction of a propoxylate with propylene glycol, and which agent has an HLB value of about 8.
Claim 13
Dependent Claim
21 words
The detergent slurry of claim 1 wherein the soluble, anionic surface-active agent is a C 10 -C 20 alkyl sodium sulfonate.
Claim 14
Dependent Claim
22 words
The detergent slurry of claim 1 wherein the soluble, anionic surface-active agent is a C 10 -C 16 alkyl benzene sodium sulfonate.
Claim 15
Dependent Claim
21 words
The detergent slurry of claim 1 wherein the soluble, anionic surface-active agent is a C 10 -C 20 alkene sodium sulfonate.
Claim 16
Dependent Claim
21 words
The detergent slurry of claim 1 wherein the soluble, anionic surface-active agent is a C 8 -C 20 alkyl sodium sulfate.
Claim 17
Dependent Claim
22 words
The detergent slurry of claim 1 wherein the soluble, anionic surface-active agent is a C 10 -C 16 alkyl benzene sodium sulfate.
Claim 18
Dependent Claim
21 words
The detergent slurry of claim 1 wherein the soluble, anionic surface-active agent is a C 10 -C 20 alkene sodium sulfate.
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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) | 1988-08-26 | 1989-02-25 | 1989-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-08-26 | 1993-02-25 | 1993-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-08-26 | 1997-02-25 | 1997-08-27 | $7700.00 | Window Closed / Lapsed |