US3944527A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluoroaliphatic copolymers
Assignee: 3M Co
•
Filing: 1974-07-11
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Granted: 1976-03-16
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Expires: 1994-07-11
Abstract
Abstract A new class of hybrid copolymers which confer improved spray rating, resistance to staining, particularly aqueous stains and improved resistance to crocking on surfaces is obtained from (I) fluoroaliphatic radical-containing component in combination with (II) hydrocarbyl radical-containing component together conferring controlled oleophobicity and hydrophobicity in air and (III) a balanced combination of hydrophilic components conferring oleophobicity in water.
Inventors
- 👤 Joseph Dana McCown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:19
CPC Classifications
C; C08; C08F; C08F220/00; C08F220/02; C08F220/10; C08F220/22; C08F220/24; 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: 8
Claim 1
Independent Claim
47 words
A hybrid tetracopolymer consisting essentially of the polymer of 40-70% fluooroaliphatic radical containing acrylate or methacrylate, 5-15% of an acrylate or methacrylate of alkyl of 1-4 carbon atoms, 20-30% polyoxyethylene acrylate or methacrylate methacrylate and 5 to 15% of an acrylate or methacrylate of polyoxypropylene or polyoxytetramethylene.
Claim 2
Dependent Claim
47 words
A hybrid tetracopolymer consisting essentially of the polymer of 40-70% fluooroaliphatic radical containing acrylate or methacrylate, 5-15% of an acrylate or methacrylate of alkyl of 1-4 carbon atoms, 20-30% polyoxyethylene acrylate or methacrylate methacrylate and 5 to 15% of an acrylate or methacrylate of polyoxypropylene or polyoxytetramethylene.
Claim 3
Dependent Claim
39 words
The hybrid tetracopolymer according to claim 1 wherein there is about 20% of polyoxyethylene methacrylate in which the molecular weight of the polyoxyethylene chain is about 4000 and there is about 40% esterification of hydroxyl groups by methacrylic acid.
Claim 4
Dependent Claim
39 words
The hybrid tetracopolymer according to claim 1 wherein there is about 10% of polyoxytetramethylene methacrylate in which the molecular weight of the polyoxytetramethylene chain is about 2000 and about 75% of the hydroxyl groups are esterified by methacrylic acid.
Claim 5
Dependent Claim
23 words
The hybrid tetracopolymer according to claim 1 wherein the fluoroaliphatic radical contains a perfluoroalkyl group C.sub.n F.sub.2n.sub.+1 wherein n is 3 to 20.
Claim 6
Dependent Claim
19 words
The hybrid tetracopolymer according to claim 4 wherein the fluoroaliphatic radical containing acrylate or methacrylate is N-methyl perfluorooctanesulfonamidobutyl acrylate.
Claim 7
Dependent Claim
31 words
A composition for the treatment of surfaces for conferring stain repellency and soil release thereon comprising a liquid medium having the hybrid copolymer of claim 1 uniformly distributed through said medium.
Claim 8
Dependent Claim
37 words
A composition for the treatment of surfaces according to claim 6 additionally comprising fluoroaliphatic radical containing polymer devoid of polyoxyalkylene groups in proportions by weight to the hybrid copolymer of 80 to 20 to 20 to 80.
References Cited (Backward Citations)
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US3412179A
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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) | 1979-03-16 | 1979-09-15 | 1980-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-16 | 1983-09-15 | 1984-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-16 | 1987-09-15 | 1988-03-16 | $7700.00 | Window Closed / Lapsed |