Patent US4781844A successfully refreshed from Google Patents.
US4781844A
Expired / Lapsed
US
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Fluorine containing silicone textile-finishing agent: silicone suspension and perfluoroalkyl polymer
Assignee: Bayer AG
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Filing: 1987-05-21
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Granted: 1988-11-01
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Expires: 2007-05-21
Abstract
Abstract A textile finishing agent comprising, by weight, about (A) 50-80 parts of an aqueous colloidal suspension, in the form of a sol, at least one of an organosilsesequioxane having units of the formula RSiO 3/2 (wherein R is optionally substituted alkyl or aryl of up to 7 carbon atoms) and a cocondensate of a hydrolyzate of a tetraalkoxysilane with an organotrialkoxysilane having RSiO 3/2 or SiO 2 units, and (B) 20-50 parts of an aqueous dispersion which contains about 5 to 50% by weight of an organic polymer resin which contains perfluoroalkyl groups which have 3 to 20 C atoms and which, in addition to fluorine atoms, can contain at most 1 hydrogen atom or chlorine atom per 2 C atoms and in which the perfluoroalkyl chain can be interrupted by oxygen and which has a fluorine content of about 0.2 to 40% by weight. Textiles finished therewith are hydrophilic, oleophilic and soil resistant.
Inventors
- 👤 Wilfried Kortmann
- 👤 Helmut Steinberger
- 👤 Josef Pfeiffer
- 👤 Ulrich Koemm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:44
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/263; D06M15/277; D06M15/37; D06M15/564; D06M15/576; D06M15/643; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
149 words
A textile finishing agent comprising: (a) 50 to 80 parts by weight of an aqueous colloidal suspension containing hydrolysates of (i) trialkoxysilane (RSi(OR') 3 or (ii) a mixture of trialkoxysilane RSi(OR') 3 and tetra-alkoxysilane Si(OR') 4 , where R is C 1-7 alkyl or an aryl and where R' is C 1-4 alkyl and (b) 20 to 50 parts by weight of an aqueus dispersion comprising 5 to 50 weight % of a perfluoroalkyl group-containing resin, the resin having a fluorine content of 0.2-40% by weight, the resin being selected from the group consisting of a polyacrylate, a polyurethane and a polyester, the perfluoralky groups being of the formula --Y--(CFx).sub.n --CF.sub.2 x, wherein n is 2 to 19, x is F, Cl, H, or --Y--(CF.sub.2).sub.m.sbsb.1 --O--(CF.sub.2).sub.m.sbsb.1 --CF.sub.3, where Y is selected from the group consisting of ##STR9## m 1 +m 2 is n and n is 2 to 19.
Claim 2
Dependent Claim
149 words
A textile finishing agent comprising: (a) 50 to 80 parts by weight of an aqueous colloidal suspension containing hydrolysates of (i) trialkoxysilane (RSi(OR') 3 or (ii) a mixture of trialkoxysilane RSi(OR') 3 and tetra-alkoxysilane Si(OR') 4 , where R is C 1-7 alkyl or an aryl and where R' is C 1-4 alkyl and (b) 20 to 50 parts by weight of an aqueus dispersion comprising 5 to 50 weight % of a perfluoroalkyl group-containing resin, the resin having a fluorine content of 0.2-40% by weight, the resin being selected from the group consisting of a polyacrylate, a polyurethane and a polyester, the perfluoralky groups being of the formula --Y--(CFx).sub.n --CF.sub.2 x, wherein n is 2 to 19, x is F, Cl, H, or --Y--(CF.sub.2).sub.m.sbsb.1 --O--(CF.sub.2).sub.m.sbsb.1 --CF.sub.3, where Y is selected from the group consisting of ##STR9## m 1 +m 2 is n and n is 2 to 19.
Claim 3
Dependent Claim
28 words
A textile finishing agent according to claim 1, wherein trialkoxysilane is selected from the group consisting of methyltrimethoxysilane, methyltriethoxysilane, methyltriisopropoxysilane, ethyltriemethoxysilane, ethyltriethoxysilane, propyltrimethoxysilane, isobutyltrimethoxysilane, isobutyltriethoxysilane, 2-ethylbutyltriethoxysilane and 2-ethylbutoxytriethoxysilane.
Claim 4
Dependent Claim
21 words
A textile finishing agent according to claim 1, wherein said resin has a fluorine content of 1.0 to 20% by weight.
Claim 5
Dependent Claim
76 words
A textile finishing agent according to claim 1, wherein (b) is an aqueous dispersion comprising 40 weight % of a resin which is composed of 4 parts of a copolymer A and 6 parts of a copolymer B, 70% of copolymer A comprising units of the formula ##STR10## and 30% of copolymer A comprising units of the formula ##STR11## copolymer B being a methyl methacrylate/ethyl methacrylate copolymer with a content of methyl methacrylate of about 80%.
Claim 6
Dependent Claim
80 words
A textile finishing agent according to claim 1, wherein (b) is an aqueous dispersion comprising 40 weight % of a resin which is composed of 2 parts of a copolymer D, 4 parts of a polycondensate E and 4 parts of a paraffin, the copolymer D comprising 80% of units of the formula ##STR12## and 20% of units of the formula ##STR13## polycondensate E being formed by a polycondensation of a C 20 fatty acid with hexamethylolmelamine pentamethylether and methyldiethanolamine.
Claim 7
Dependent Claim
38 words
A textile finishing agent according to claim 1, wherein (b) is an dispersion comprising 10 weight % of a resin comprising a copolymer containing units of the formula ##STR14## in which n=4, 6, 8, 10, 12 or 14.
Claim 8
Dependent Claim
22 words
A textile finishing agent according to claim 1, wherein the resin in (b) contains C 4 - or C 8 -perfluoroalkyl groups.
Claim 9
Dependent Claim
14 words
A textile finishing agent according to claim 1, wherein said tetraalkoxy silane is tetraethoxysilane.
Claim 10
Dependent Claim
123 words
A textile finishing agent according to claim 1, wherein (b) is a 30% weight aqueous dispersion of a perfluoro resin which is composed of 9 parts of a copolymer A, 6 parts of a copolymer B and 5 parts of a polyurethane C containing perfluoroalkyl groups, the polyurethane C having an average molecular weight of 3,500 and containing a recurrent structural unit of the formula ##STR15## and a chain having ends of the formula [C.sub.8 F.sub.17 SO.sub.2 N(C.sub.2 H.sub.5)C.sub.2 H.sub.4 --O--] or ##STR16## wherein 70% of copolymer A comprises units of the formula ##STR17## and 30% of copolymer A comprises units of the formula ##STR18## and wherein copolymer B is a methyl methacrylate/ethyl methacrylate copolymer with a methyl methacrylate content of about 80%.
Claim 11
Dependent Claim
11 words
A textile material finished with an agent according to claim 1.
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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) | 1991-11-01 | 1992-05-02 | 1992-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-11-01 | 1996-05-02 | 1996-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-11-01 | 2000-05-02 | 2000-11-01 | $7700.00 | Window Closed / Lapsed |