Patent US5817249A successfully refreshed from Google Patents.
US5817249A
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Carbodiimide compound and water repellent compositions
Assignee: 3M Co
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Filing: 1995-10-23
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Granted: 1998-10-06
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Expires: 2015-10-23
Abstract
Abstract Invention relates to new carbodiimide compound obtainable from reaction mixture comprising an isocyanate compound and a monofunctional alcohol in a non-reactive solvent in the presence of a suitable catalyst, characterized in that the isocyanate compound and the monofunctional alcohol, except for the hydroxy group, are free from isocyanate reactive hydrogen atoms and the monofunctional alcohol is a branched aliphatic alcohol containing at least 8 carbon atoms, and to compositions comprising a fluorochemical oil and water repellent agent and said carbodiimide compound.
Inventors
- 👤 Frans A. G. Audenaert
- 👤 Hugo R. Lens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:01
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/28; C03C17/32; C04; C04B; C04B41/00; C04B41/009; C04B41/45; C04B41/46; C04B41/60; C04B41/61; C04B41/62; C07; C07C; C07C267/00; C07C271/00; C07C271/06; C07C271/08; C07C271/10; C07C271/20; C09; C09K; C09K3/00; C09K3/18; C14; C14C; C14C9/00; D; D06; D06M; D06M13/00; D06M13/322; D06M13/402; D06M13/432; D06M15/00; D06M15/19; D06M15/21; D06M15/263; D06M15/277; C04B2111/00; C04B2111/20; C04B2111/27
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
79 words
A water repellant composition comprising at least one essentially fluorine-free carbodiimide compound obtainable from a reaction mixture comprising an isocyanate compound and a monofunctional alcohol in a non-reactive solvent in the presence of a suitable catalyst, characterized in that the isocyanate compound and the monofunctional alcohol, except for the hydroxy group, are free from isocyanate reactive hydrogen atoms and the monofunctional alcohol is a branched aliphatic alcohol containing at least 8 carbon atoms; and at least one fluorochemical compound.
Claim 2
Dependent Claim
79 words
A water repellant composition comprising at least one essentially fluorine-free carbodiimide compound obtainable from a reaction mixture comprising an isocyanate compound and a monofunctional alcohol in a non-reactive solvent in the presence of a suitable catalyst, characterized in that the isocyanate compound and the monofunctional alcohol, except for the hydroxy group, are free from isocyanate reactive hydrogen atoms and the monofunctional alcohol is a branched aliphatic alcohol containing at least 8 carbon atoms; and at least one fluorochemical compound.
Claim 3
Dependent Claim
121 words
The composition according to claim 1 wherein the fluorochemical compound is a copolymer of at least one monomer represented by the general formula R.sub.f R.sup.1 OCOC(R.sup.2)═CH.sub.2 and R.sub.f SO.sub.2 N(R.sup.3)R.sup.4 OCOC(R.sup.2)═CH.sub.2 in which R f is a fluoroaliphatic radical having at least 3 carbon atoms which can contain heteroatoms selected from O, S and N; R 1 is an alkylene with 1 to 10 carbon atoms, or --CH 2 CH(OR)CH 2 --, in which R is hydrogen or COCH 3 ; R 2 is hydrogen or methyl; R 3 is hydrogen or an alkyl with 1 to 20 carbon atoms; and R 4 is an alkylene with 1 to 20 carbon atoms and at least one fluorine-free terminally ethylenically unsaturated comonomer.
Claim 4
Dependent Claim
49 words
The composition of claim 2 in which the fluorochemical compound is a copolymer of a fluorinated monomer selected from N-methyl perfluorooctylsulfon-amidoethyl acrylate C 8 F 17 SO 2 N(CH 3 )CH 2 CH 2 OC(O)CH═CH 2 and N-methyl perfluorooctylsulfonamidoethyl methacrylate and a terminally ethylenically unsaturated monomer selected from ethyl-hexylmethacrylate.
Claim 5
Dependent Claim
22 words
The composition of claim 2 in which there are 25-200 parts by weight carbodiimide per 100 parts by weight of fluorochemical compound.
Claim 6
Dependent Claim
43 words
A method for treating a substrate selected from the group consisting of woven textile fabrics, fibers, non-wovens, leather, paper, carpet, plastic, wood, metal, glass, concrete and stone to impart oil and water repellency comprising applying to the substrate a composition of claim 1.
Claim 7
Dependent Claim
23 words
The method of claim 5 in which the substrate is selected from the group consisting of rayon, cotton, linen and other cellulosic substrates.
Claim 8
Dependent Claim
27 words
The combination of substrate and a water repellent composition selected from the compositions of claim 1 and the same compositions which have been cured on the substrate.
Claim 9
Dependent Claim
103 words
A dispersion comprising water; at least one essentially fluorine-free carbodiimide compound obtainable from a reaction mixture comprising an isocyanate compound and a monofunctional alcohol in a non-reactive solvent in the presence of a suitable catalyst, characterized in that the isocyanate compound and the monofunctional alcohol, except for the hydroxy group, are free from isocyanate reactive hydrogen atoms and the monofunctional alcohol is a branched aliphatic alcohol containing at least 8 carbon atoms; and at least one fluorochemical compound; which dispersion is effective to provide repellent properties to a substrate treated therewith and contains a surfactant in an amount effective to stabilize the dispersion.
Claim 10
Dependent Claim
103 words
A dispersion comprising water; at least one essentially fluorine-free carbodiimide compound obtainable from a reaction mixture comprising an isocyanate compound and a monofunctional alcohol in a non-reactive solvent in the presence of a suitable catalyst, characterized in that the isocyanate compound and the monofunctional alcohol, except for the hydroxy group, are free from isocyanate reactive hydrogen atoms and the monofunctional alcohol is a branched aliphatic alcohol containing at least 8 carbon atoms; and at least one fluorochemical compound; which dispersion is effective to provide repellent properties to a substrate treated therewith and contains a surfactant in an amount effective to stabilize the dispersion.
Claim 11
Dependent Claim
48 words
Dispersion according to claim 8 in which water is present in an amount of 70 to 20,000 parts-by-weight based on 100 parts-by-weight of the combined weights of carbodiimide and fluorochemical compounds, and the surfactant is present in an amount up to 25 parts-by-weight on the same weight basis.
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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) | 2001-10-05 | 2002-04-06 | 2002-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-10-05 | 2006-04-06 | 2006-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-10-05 | 2010-04-06 | 2010-10-06 | $7700.00 | Window Closed / Lapsed |