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US3606989A
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US
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Fabric-treating composition and method
Assignee: Purex Corp Ltd
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Filing: 1967-10-19
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Granted: 1971-09-21
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Expires: 1987-10-19
Abstract
Abstract Fabrics are increased in brightness by deposition thereon of particulate synthetic organic polymer of a size to be suspendible in dilute aqueous solution of sodium hypochlorite, conveniently during an otherwise conventional fabric washing operation.
Inventors
- 👤 William J Park
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:52
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/37; C11D3/3746; C11D3/3757; C11D3/3765; C11D3/395; C11D3/3956; D; D06; D06L; D06L4/00; D06L4/20; D06L4/22; D06L4/23
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
Composition according to claim 1 in which said styrene polymer consists essentially of copolymerized styrene monomer and from 5 to 25 percent by weight of an ethylenically unsaturated monomer containing a polar group selected from the group consisting of sulfonic, sulfonate, phosphoric and carboxylic-acid groups.
Claim 2
Dependent Claim
44 words
Method of treating fabric to increase the brightness thereof without the use of fluorescing brighteners which includes intimately wetting the fabric with the composition claimed in claim 1 and depositing said polymer onto said fabric thereby to increase light-reflectance from said fabric when dried.
References Cited (Backward Citations)
US3326807A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |