US3915633A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Complexing acid pre-wash composition and method
Assignee: Colgate Palmolive Co
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Filing: 1972-09-21
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Granted: 1975-10-28
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Expires: 1992-09-21
Abstract
Abstract A pre-wash composition adapted to be sprayed onto a soiled fabric before washing consisting essentially of from 1 to 20% by weight of an organic complexing acid, from 0 to 30% by weight of a surface active agent and from 99 to 50% by weight of water. The method for assisting the removal of soil from a fabric comprises spraying a soiled fabric with the above composition followed by laundering the same in a conventional manner.
Inventors
- 👤 Pallassana Ramachandran
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:43
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/20; C11D3/2075; C11D17/00; C11D17/0043
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
69 words
AN AQUEOUS PRE-WASH AEROSOL SPRAY SOIL RELEASE COMPOSITION FOR USE IN CONJUCTION WITH A DETERGENT OR SOAP IN A LAUNDERING PRECEDURE CONSISTING ESSENTIALLY OF FROM 1-20% BY WEIGHT OF AN ORGANIC COMPLEXING ACID CAPABLE OF COMPLEXING THE STAIN-FORMING METALLIC IONS IN THE SOIL FROM ABOUT 2 TO 30% BY WEIGHT OF A SURFACE ACTIVE AGENT AND 99-50% BY WEIGHT OF WATER AND AN EFFECTIVE AMOUNT OF AN AEROSOL PROPELLANT.
Claim 2
Dependent Claim
69 words
AN AQUEOUS PRE-WASH AEROSOL SPRAY SOIL RELEASE COMPOSITION FOR USE IN CONJUCTION WITH A DETERGENT OR SOAP IN A LAUNDERING PRECEDURE CONSISTING ESSENTIALLY OF FROM 1-20% BY WEIGHT OF AN ORGANIC COMPLEXING ACID CAPABLE OF COMPLEXING THE STAIN-FORMING METALLIC IONS IN THE SOIL FROM ABOUT 2 TO 30% BY WEIGHT OF A SURFACE ACTIVE AGENT AND 99-50% BY WEIGHT OF WATER AND AN EFFECTIVE AMOUNT OF AN AEROSOL PROPELLANT.
Claim 3
Dependent Claim
30 words
The composition of claim 1, wherein said composition consists essentially of from 5 to 15% by weight of said organic complexing acid and from 95 to 85% by weight water.
Claim 4
Dependent Claim
32 words
The composition of claim 2, wherein said organic complexing acid is selected from the group consisting of citric acid, tartaric acid, maleic acid, fumaric acid, adipic acid, succinic acid and mixtures thereof.
Claim 5
Dependent Claim
13 words
The composition of claim 3, wherein said organic complexing acid is citric acid.
Claim 6
Dependent Claim
18 words
The composition of claim 4, wherein said citric acid is present in a concentration of 5% by weight.
Claim 7
Dependent Claim
16 words
The composition of claim 1, wherein said surface active agent is a non-ionic surface active agent.
Claim 8
Dependent Claim
84 words
A process for assisting in the removal of soil complexes from a fabric comprising applying to a soiled fabric a pre-wash composition consisting essentially of from 20% by weight of an organic complexing acid capable of complexing the stain-forming metallic ions in the soil, from 2 to 30% by weight of a non-ionic or anionic surface active agent and from 99-50% by weight of water and laundering said soiled fabric using a washing agent selected from non-ionic detergents, cationic detergents, anionic detergents and soap.
Claim 9
Dependent Claim
84 words
A process for assisting in the removal of soil complexes from a fabric comprising applying to a soiled fabric a pre-wash composition consisting essentially of from 20% by weight of an organic complexing acid capable of complexing the stain-forming metallic ions in the soil, from 2 to 30% by weight of a non-ionic or anionic surface active agent and from 99-50% by weight of water and laundering said soiled fabric using a washing agent selected from non-ionic detergents, cationic detergents, anionic detergents and soap.
Claim 10
Dependent Claim
30 words
The process of claim 7, wherein the composition consists essentially of from 5 to 15% by weight of said organic complexing acid and from 95 to 85% by weight water.
Claim 11
Dependent Claim
32 words
The process of claim 7, wherein said organic complexing acid is selected from the group consisting of citric acid, tartaric acid, maleic acid, fumaric acid, adipic acid, succinic acid and mixtures thereof.
Claim 12
Dependent Claim
13 words
The process of claim 9, wherein said organic complexing acid is citric acid.
Claim 13
Dependent Claim
18 words
The process of claim 10, wherein said citric acid is present in a concentration of 5% by weight.
Claim 14
Dependent Claim
16 words
The process of claim 7, wherein said surface active agent is a non-ionic surface active agent.
Claim 15
Dependent Claim
13 words
The process of claim 7, wherein said composition is sprayed onto said fabrics.
Claim 16
Dependent Claim
20 words
The process of claim 7, wherein said composition is applied to said fabric in the form of an aerosol spray.
Claim 17
Dependent Claim
21 words
The process of claim 7, wherein said composition is applied to said fabric as a spray discharged from a pump valve.
Claim 18
Dependent Claim
11 words
A fabric treated in accordance with the process of claim 7.
Claim 19
Dependent Claim
9 words
A fabric treated with the composition of claim 1.
Claim 20
Dependent Claim
12 words
A fabric as defined in claim 16 comprised of polyester and cotton.
References Cited (Backward Citations)
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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) | 1978-10-27 | 1979-04-28 | 1979-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-27 | 1983-04-28 | 1983-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-27 | 1987-04-28 | 1987-10-28 | $7700.00 | Window Closed / Lapsed |