US4000080A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low phosphate content detergent composition
Assignee: Procter and Gamble Co
•
Filing: 1974-10-11
•
Granted: 1976-12-28
•
Expires: 1994-10-11
Abstract
Abstract A low phosphate content detergent composition comprising about 10% to about 25% by weight phosphate builder, about 3% to 30% hardness mineral ion insensitive detergent, about 0.5% to about 3% maleic anhydride-vinyl compound copolymer, and from about 0.5% to about 3% alkylene oxide condensation product.
Inventors
- 👤 Giuseppe Bartolotia
- 👤 Willem Alfons Prinsen
- 👤 Jean-Paul Frenay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:18
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/37; C11D3/3746; C11D3/3757; C11D3/3761; C11D1/00; C11D1/66; C11D1/83; C11D3/02; C11D3/04; C11D3/06; C11D3/08; C11D3/39; C11D3/3942; C11D1/02; C11D1/12; C11D1/22; C11D1/72
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
226 words
A spray dried granular detergent composition consisting essentially of: a. from 10% to 18% water-soluble phosphate builder salt selected from the group consisting of alkali metal pyrophosphate and alkali metal tripolyphosphate; b. at least about 3% of a condensation product of an alcohol having from about 8 to about 18 carbon atoms with from about 3 to about 15 moles of ethylene oxide per mole of alcohol; c. from about 1% to about 2% ethylene oxide condensation product wherein said condensation product has an average molecular weight of from about 2,500 to about 20,000; d. from about 1% to about 2% water-soluble maleic anhydride - vinyl methyl ether copolymer having a molecular weight of from about 10,000 to about 350,000 and water-soluble salts thereof; e. water-soluble salt of linear alkyl benzene sulfonate wherein the alkyl radical contains from 10 to 15 carbon atoms, the total level of linear alkyl benzene sulfonate and said condensation product of alcohol and ethylene oxide being less than about 30% and the weight ratio of linear alkyl benzene sulfonate to said condensation product of alcohol and ethylene oxide being from about 3:1 to about 1:1; f. from 1% to 15% sodium silicate having a SiO 2 : Na 2 O ratio of from 3:1 to 1.5:1; g. from 5% to 40% sodium sulfate; and h. from 5% to 35% peroxy bleach.
Claim 2
Dependent Claim
226 words
A spray dried granular detergent composition consisting essentially of: a. from 10% to 18% water-soluble phosphate builder salt selected from the group consisting of alkali metal pyrophosphate and alkali metal tripolyphosphate; b. at least about 3% of a condensation product of an alcohol having from about 8 to about 18 carbon atoms with from about 3 to about 15 moles of ethylene oxide per mole of alcohol; c. from about 1% to about 2% ethylene oxide condensation product wherein said condensation product has an average molecular weight of from about 2,500 to about 20,000; d. from about 1% to about 2% water-soluble maleic anhydride - vinyl methyl ether copolymer having a molecular weight of from about 10,000 to about 350,000 and water-soluble salts thereof; e. water-soluble salt of linear alkyl benzene sulfonate wherein the alkyl radical contains from 10 to 15 carbon atoms, the total level of linear alkyl benzene sulfonate and said condensation product of alcohol and ethylene oxide being less than about 30% and the weight ratio of linear alkyl benzene sulfonate to said condensation product of alcohol and ethylene oxide being from about 3:1 to about 1:1; f. from 1% to 15% sodium silicate having a SiO 2 : Na 2 O ratio of from 3:1 to 1.5:1; g. from 5% to 40% sodium sulfate; and h. from 5% to 35% peroxy bleach.
Claim 3
Dependent Claim
15 words
A detergent composition as recited in claim 1 in which said phosphate is sodium pyrophosphate.
Claim 4
Dependent Claim
15 words
A detergent composition as recited in claim 1 in which said phosphate is sodium tripolyphosphate.
Claim 5
Dependent Claim
18 words
A detergent composition as recited in claim 1 in which said alcohol condensation product is ethoxylated tallow alcohol.
Claim 6
Dependent Claim
26 words
A detergent composition as recited in claim 1 in which said linear alkyl benzene sulfonate is the sodium salt of C 12 linear alkyl benzene sulfonate.
Claim 7
Dependent Claim
17 words
A detergent composition as recited in claim 1 in which said peroxy bleach is sodium perborate tetrahydrate.
References Cited (Backward Citations)
CA860898A
Cited
US2806001A
Cited
US3235500A
Cited
US3308067A
Cited
US3457176A
Cited
US3519570A
Cited
US3658727A
Cited
US3700599A
Cited
US3870648A
Cited
US3850852A
Cited
US3799880A
Cited
DE2433485A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-12-28 | 1980-06-28 | 1980-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-12-28 | 1984-06-28 | 1984-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-12-28 | 1988-06-28 | 1988-12-28 | $7700.00 | Window Closed / Lapsed |