US3816167A
Expired / Lapsed
US
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Stain-releasing textiles of synthetic fibers and process for treating textiles of synthetic fibers
Assignee: 3M Co
•
Filing: 1971-10-20
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Granted: 1974-06-11
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Expires: 1991-10-20
Abstract
Abstract Stain releasing from synthetic fibers is assured during laundering by applying a treatment of fluoroaliphatic comonomer and polyalkylene glycol cross-linked in situ by an aldehydecontaining prepolymer.
Inventors
- 👤 W Schultz
- 👤 P Sherman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:48
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/263; D06M15/277; Y; Y10; Y10T; Y10T442/00; Y10T442/20; Y10T442/2279; Y10T442/2287
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
20 words
A process according to claim 1 wherein the fluoroaliphatic group containing stain-release moiety further possesses groups reactive with aldehyde groups.
Claim 2
Dependent Claim
15 words
A process according to claim 2 wherein the reactive aldehyde-containing prepolymer is water-soluble aminoplast precondensate.
Claim 3
Dependent Claim
12 words
A process according to claim 3 wherein the aminoplast precondensate includes formaldehyde.
Claim 4
Dependent Claim
84 words
A fabric consisting essentially of noncellulosic synthetic fibers having improved stain release properties finished with a stain release finish consisting essentially of a cured mixture in percents by weight of said fabric of A. 0.1 to 1.0 percent of a fluoroaliphatic group containing stain-release polymer, B. 0.1 to 5.0 percent of a polyalkylene oxide segment containing moiety having a molecular weight between about 400 and 20,000 and possessing one aldehyde-reactive group or site and, (C) 0.01 to 0.5 percent of a reactive aldehyde-containing prepolymer.
Claim 5
Dependent Claim
15 words
A fabric according to claim 5 wherein the fluoroaliphatic group containing polymer possesses aldehyde-reactive groups.
Claim 6
Dependent Claim
16 words
A fabric according to claim 6 wherein the aldehyde containing prepolymer is a water-soluble aminoplast precondensate.
Claim 7
Dependent Claim
12 words
A fabric according to claim 7 wherein the aminoplast precondensate includes formaldehyde.
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) | 1977-06-10 | 1977-12-10 | 1978-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-10 | 1981-12-10 | 1982-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-10 | 1985-12-10 | 1986-06-11 | $7700.00 | Window Closed / Lapsed |