US6737489B2
Expired / Lapsed
US
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Polymers containing perfluorovinyl ethers and applications for such polymers
Assignee: 3M Innovative Properties Co
•
Filing: 2001-05-21
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Granted: 2004-05-18
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Expires: 2021-05-21
Abstract
Abstract A fluorochemical composition for rendering a fibrous substrate oil and/or water repellent which comprises a solution or dispersion of a fluoropolymer having a partially or fully fluorinated backbone and comprising one or more repeating units corresponding to the general formula:wherein Rf represents a perfluorinated organic group having a chain length of at least 2 atoms and having at least one carbon atom and optional auxiliary components.
Inventors
- 👤 Jeffrey G. Linert
- 👤 E. Steven McAlister
- 👤 Lian S. Tan
- 👤 Richard S. Buckanin
- 👤 Naiyong Jing
- 👤 Frans A. Audenaert
- 👤 Thomas J. Blong
- 👤 John C. Clark
- 👤 Linda G. Coté
- 👤 Harald Kaspar
- 👤 Franz März
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:01
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/564; D06M15/568; C; C08; C08L; C08L27/00; C08L27/02; C08L27/12; D06M13/00; D06M13/322; D06M13/395; D06M13/402; D06M13/432; D06M15/21; D06M15/244; D06M15/256; D06M15/263; D06M15/277; D06M15/347; D06M15/353; D06M15/356; D06M15/3562; D06M15/3566; D06M2200/00; D06M2200/10; D06M2200/11; D06M2200/12
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
72 words
Method for treating a fibrous substrate comprising contacting the fibrous substrate with a fluorochemical composition comprising a solution or dispersion of up to 4% by weight of a fluoropolymer having a partially or fully fluorinated backbone and comprising one or more repeating units corresponding to the general formula: wherein R f represents a perfluorinated organic group having a chain length of at least 2 atoms and having at least one carbon atom.
Claim 2
Dependent Claim
72 words
Method for treating a fibrous substrate comprising contacting the fibrous substrate with a fluorochemical composition comprising a solution or dispersion of up to 4% by weight of a fluoropolymer having a partially or fully fluorinated backbone and comprising one or more repeating units corresponding to the general formula: wherein R f represents a perfluorinated organic group having a chain length of at least 2 atoms and having at least one carbon atom.
Claim 3
Dependent Claim
20 words
Method according to claim 1 wherein R f represents a perfluorinated aliphatic group optionally containing one or more oxygen atoms.
Claim 4
Dependent Claim
19 words
Method according to claim 1 wherein R f is a perfluoroalkoxy group, a perfluoroalkyl group or a perfluoropolyether group.
Claim 5
Dependent Claim
82 words
Method according to claim 1 wherein R f corresponds to the following formula: O(R 1 f O) n (R 2 f O) m R 3 f wherein R 1 f , R 2 f each independently represents a linear or branched perfluoroalkylene having 1, 2, 3, 4, 5 or 6 carbon atoms, R 3 f represents a linear, branched or cyclic perfluoroalkyl group having 1,2,3,4,5 or 6 carbon atoms and n and m each independently represents an integer of 0 to 10.
Claim 6
Dependent Claim
30 words
Method according to claim 4 wherein n is 0, m is 1, R 2 f is a perfluoroalkylene having 2 or 3 carbon atoms and R 3 f is perfluoropropyl.
Claim 7
Dependent Claim
18 words
Method according to claim 1 wherein the backbone of said fluoropolymer is at least 10% by weight fluorinated.
Claim 8
Dependent Claim
31 words
Method according to claim 1 wherein said one or more repeating units according to formula (I) are present in said fluoropolymer in a total amount of at least 1 mole %.
Claim 9
Dependent Claim
26 words
Method according to claim 7 wherein the total amount of said one or more repeating units according to formula (I) is at least 10 mole %.
Claim 10
Dependent Claim
51 words
Method according to claim 1 wherein said fluoropolymer is a copolymer of at least one fluorinated monomer selected from the group consisting of tetrafluoroethylene, vinylidene fluoride and trichlorofluoroethylene and a monomer corresponding to the formula: CF 2 ═CF—R f wherein R f has the meaning as defined in claim 7 .
Claim 11
Dependent Claim
61 words
Method according to claim 9 wherein the amount of repeating units derived from tetrafluoroethylene is between 0 mole % and 70 mole %, the amount of repeating units derived from vinylidene fluoride is between 0 and 95 mole % and the total amount of repeating units derived from tetrafluoroethylene and vinylidene fluoride is between 95 mole % and 0 mole %.
Claim 12
Dependent Claim
20 words
Method according to claim 9 wherein said fluoropolymer further comprises repeating units derived from further fluorinated monomers and/or non-fluorinated monomers.
Claim 13
Dependent Claim
21 words
Method according to claim 11 wherein said further fluorinated monomers include hexafluoropropylene and wherein said non-fluorinated monomers include ethylene and propylene.
Claim 14
Dependent Claim
15 words
Method according to claim 1 wherein said composition is an aqueous dispersion of said fluoropolymer.
Claim 15
Dependent Claim
15 words
Method according to claim 13 wherein said aqueous dispersion is non-ionic, anionic, cationic or zwitterionic.
Claim 16
Dependent Claim
18 words
Method according to claim 1 wherein said composition is a dispersion of said fluoropolymer in an organic solvent.
Claim 17
Dependent Claim
18 words
Method according to claim 13 wherein the average particle size of said fluoropolymer is less than 300 nm.
Claim 18
Dependent Claim
51 words
Method according to claim 1 wherein said fluorochemical composition further comprises one or more auxiliary components capable of further improving the oil- and/or water repellency of a fibrous substrate treated with the fluorochemical composition or an auxiliary component that is capable of providing improved soil/stain release properties to the fibrous substrate.
Claim 19
Dependent Claim
33 words
Method according to claim 17 wherein said one or more auxiliary components comprise aliphatic polyisocyanates, blocked isocyanates, aliphatic or aromatic carbodiimides, or homo- or copolymers of alkyl esters of acrylic or methacrylic acid.
Claim 20
Dependent Claim
20 words
Method according to claim 1 wherein the amount of said fluoropolymer is between 0.05% by weight and 3% by weight.
Claim 21
Dependent Claim
45 words
Method according to claim 1 wherein the fluorochemical composition is applied to the fibrous substrate in an amount such that the resulting amount of said fluoropolymer on said fibrous substrate is not more than 3% by weight based on the weight of said fibrous substrate.
Claim 22
Dependent Claim
11 words
Method according to claim 1 wherein said fibrous substrate is textile.
Claim 23
Dependent Claim
40 words
Method according to claim 4 wherein subsequent to contacting said fibrous substrate with said fluorochemical composition, said fibrous substrate is subjected to a heat treatment between 90° C. and 170° C. for a time of 10 minutes to 20 seconds.
Claim 24
Dependent Claim
19 words
Method according to claim 1 wherein said first fluoropolymer comprises only repeating units according to said general formula (I).
Claim 25
Dependent Claim
85 words
Use of a fluorochemical composition to impart oil repellency, water repellency, soil repellency and/or soil/stain release to a fibrous substrate without substantially affecting the look and feel of said fibrous substrate, the fluorochemical composition comprising a solution or dispersion of a fluoropolymer having a partially or fully fluorinated backbone and comprising one or more repeating units corresponding to the general formula: wherein R f represents a perfluorinated organic group having a chain length of at least 2 atoms and having at least one carbon atom.
Claim 26
Dependent Claim
85 words
Use of a fluorochemical composition to impart oil repellency, water repellency, soil repellency and/or soil/stain release to a fibrous substrate without substantially affecting the look and feel of said fibrous substrate, the fluorochemical composition comprising a solution or dispersion of a fluoropolymer having a partially or fully fluorinated backbone and comprising one or more repeating units corresponding to the general formula: wherein R f represents a perfluorinated organic group having a chain length of at least 2 atoms and having at least one carbon atom.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 2007-05-18 | 2007-11-17 | 2008-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2011-05-18 | 2011-11-17 | 2012-05-18 | $3760.00 | Window Closed / Lapsed |
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