US4781844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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 03:41
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.
References Cited (Backward Citations)
US3083224A
Cited
GB1135757A
Cited
US3493424A
Cited
US3385812A
Cited
GB1155741A
Cited
US3949136A
Cited
JPS5381799A
Cited
US4321403A
Cited
US4351736A
Cited
US4473371A
Cited
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 |