US4215205A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluoroaliphatic radical and carbodiimide containing compositions for fabric treatment
Assignee: 3M Co
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Filing: 1977-01-12
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Granted: 1980-07-29
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Expires: 1997-01-12
Abstract
Abstract Durably launderable and dry-cleanable repellency to water and oil is conferred on fabrics consisting essentially completely of hydrophobic synthetic fibers by application of a blend of a fluoroaliphatic vinyl polymer and a carbodiimide, preferably comprising fluoroaliphatic groups.
Inventors
- 👤 Dennis P. Landucci
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:49
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/322; D06M13/395; D06M15/00; D06M15/19; D06M15/21; D06M15/263; D06M15/277; Y; Y10; Y10T; Y10T442/00; Y10T442/20; Y10T442/2279; Y10T442/2369
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A blend in volatile aqueous or non-aqueous medium of a total of at least 0.3% by weight of (A) fluoroaliphatic radical-containing substantially linear vinyl polymer containing from 10 to 60 percent by weight thereof of fluorine in the form of fluoroaliphatic radicals terminating in CF 3 radicals, said fluoroaliphatic radicals containing at least three fully fluorinated carbon atoms, and (B) a carbodiimide consisting essentially of from 1 to a plurality of carbodiimide groups, terminal organic radicals free from isocyanate-reactive hydrogen atoms connected to carbodiimide and, when two or more carbodiimide groups are present, polyvalent organic linking groups, which are residues of polyisocyanates, between successive carbodiimide groups; the ratio A to B respectively being from about 10:90 to 95:5.
Claim 2
Dependent Claim
118 words
A blend in volatile aqueous or non-aqueous medium of a total of at least 0.3% by weight of (A) fluoroaliphatic radical-containing substantially linear vinyl polymer containing from 10 to 60 percent by weight thereof of fluorine in the form of fluoroaliphatic radicals terminating in CF 3 radicals, said fluoroaliphatic radicals containing at least three fully fluorinated carbon atoms, and (B) a carbodiimide consisting essentially of from 1 to a plurality of carbodiimide groups, terminal organic radicals free from isocyanate-reactive hydrogen atoms connected to carbodiimide and, when two or more carbodiimide groups are present, polyvalent organic linking groups, which are residues of polyisocyanates, between successive carbodiimide groups; the ratio A to B respectively being from about 10:90 to 95:5.
References Cited (Backward Citations)
US3988502A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-07-29 | 1984-01-28 | 1984-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-07-29 | 1988-01-28 | 1988-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-07-29 | 1992-01-28 | 1992-07-29 | $7700.00 | Window Closed / Lapsed |