US3904359A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Post-wash fabric treating method
Assignee: Colgate Palmolive Co
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Filing: 1972-09-07
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Granted: 1975-09-09
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Expires: 1992-09-07
Abstract
Abstract A fabric treating composition for use in preventing the staining of fabrics consisting essentially of an aqueous solution of a complexing acid and a cationic fabric softening agent, the complexing acid and the softening agent being present in amounts so that on dilution with water the complexing acid comprises from 0.01 to 0.1% by weight of the dilution and the softening agent comprises from 0 to 0.1% of the dilution.
Inventors
- 👤 Pallassana Ramachandran
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:27
CPC Classifications
D; D06; D06F; D06F35/00; D06F35/005; D06F35/006; C; C11; C11D; C11D3/00; C11D3/0005; C11D3/001; C11D3/0015; C11D3/16; C11D3/20; C11D3/2075; D06M; D06M13/00; D06M13/10; D06M13/184; D06M13/192; D06M13/203; D06M13/322; D06M13/35; D06M13/46; Y; Y10; Y10T; Y10T442/00; Y10T442/20; Y10T442/2279; Y10T442/2352
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
79 words
A PROCESS FOR TREATING FABRICS WHICH ARE SUBJECT TO YELLOWING IN RINSE WATER COMPRISING LAUNDERING SAID FABRICS AND TREATING SAID FABRICS AT A TEMPERATURE O ABOUT 70*F TO ABOUT 120*F WITH AN AQUEOUS SOLUTION CONTAINING FROM ABOUT 0.01 TO ABOUT 0.1% BY WEIGHT OF A COMPLEXING ACID AND FROM O TO 0.1% BY WEIGHT OF A CATIONIC FABRIC SOFTENER, WHEREBY YELLOWING IMPARTED TO SAID FABRICS IN PART BY SAID CATONIC TATERIC SOFTENER IS SUBSTANTIALLY REDUCED BY SAID COMPLEXING ACID.
Claim 2
Dependent Claim
79 words
A PROCESS FOR TREATING FABRICS WHICH ARE SUBJECT TO YELLOWING IN RINSE WATER COMPRISING LAUNDERING SAID FABRICS AND TREATING SAID FABRICS AT A TEMPERATURE O ABOUT 70*F TO ABOUT 120*F WITH AN AQUEOUS SOLUTION CONTAINING FROM ABOUT 0.01 TO ABOUT 0.1% BY WEIGHT OF A COMPLEXING ACID AND FROM O TO 0.1% BY WEIGHT OF A CATIONIC FABRIC SOFTENER, WHEREBY YELLOWING IMPARTED TO SAID FABRICS IN PART BY SAID CATONIC TATERIC SOFTENER IS SUBSTANTIALLY REDUCED BY SAID COMPLEXING ACID.
Claim 3
Dependent Claim
22 words
The process of claim 1 wherein the ratio of said complexing acid to said cationic softening agent is from 1:1 to 5:1.
Claim 4
Dependent Claim
11 words
The process of claim 1 wherein the ratio is approximately 2:
Claim 5
Dependent Claim
32 words
The process of claim 1 wherein said organic complexing acid is selected from the group consisting of citric acid, maleic acid, tartaric acid, fumaric acid, adipic acid, succinic acid and mixtures thereof.
Claim 6
Dependent Claim
11 words
The process of claim 1 wherein said acid is citric acid.
Claim 7
Dependent Claim
15 words
The process of claim 1 wherein said cationic fabric softening agent is N-tallow propylene diamine.
Claim 8
Dependent Claim
21 words
The process of claim 1 wherein said softener is included in an amount of about 0.01 to about 0.03% by weight.
Claim 9
Dependent Claim
46 words
The process of claim 1 wherein said softener is selected from the group consisting of cationic nitrogen containing compounds containing 1 to 2 straight chained organic radicals of at least 8 carbon atoms and at least one chain containing about 12 to about 22 carbon atoms.
Claim 10
Dependent Claim
16 words
The process of claim 8 where said softener is a quaternary ammonium compound of the formula
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) | 1978-09-08 | 1979-03-10 | 1979-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-08 | 1983-03-10 | 1983-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-08 | 1987-03-10 | 1987-09-09 | $7700.00 | Window Closed / Lapsed |