EP0341951A2
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EP
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Antimicrobial superabsorbent compositions and methods
Assignee: Dow Silicones Corp
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Filing: 1989-05-08
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Granted: —
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Expires: 2009-05-08
Abstract
Abstract An antimicrobial superabsorbent composition of a crosslinked hydrophilic sodium salt form of a partially neutralized acrylic acid-based polymer gel having covalently bonded thereto a silane. The composition can be in the form of flakes, strips, powders, filaments, fibers or films and may be applied to a substrate in the form of a coating.
Inventors
- 👤 Lynne Marie Blehm Blank
- 👤 Thomas Douglas Boyce
- 👤 William Curtis White
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 10:12
CPC Classifications
A; A61; A61L; A61L15/00; A61L15/16; A61L15/42; A61L15/60; A01; A01N; A01N25/00; A01N25/08; A01N25/10; A01N55/00; A61L15/20; A61L15/46; A61P; A61P17/00; A61L2300/00; A61L2300/20; A61L2300/204; A61L2300/208; A61L2300/40; A61L2300/404
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
79 words
An antimicrobial superabsorbent composition comprising a hydrophilic gel having covalently bonded thereto a silane of the general formula Y₃SiRN⁺R′R˝R‴X⁻ where Y denotes a hydrolyzable radical, R denotes a divalent hydrocarbon radical with 1 to 6 carbon atoms, R′, R˝ and R‴ independently denote saturated or unsaturated hydrocarbon radicals containing 1 to 18 carbon atoms, saturated or unsaturated organic radicals consisting of carbon, hydrogen and oxygen; carbon, hydrogen and sulfur; or carbon, hydrogen and nitrogen, and X denotes an anion.
Claim 2
Dependent Claim
79 words
An antimicrobial superabsorbent composition comprising a hydrophilic gel having covalently bonded thereto a silane of the general formula Y₃SiRN⁺R′R˝R‴X⁻ where Y denotes a hydrolyzable radical, R denotes a divalent hydrocarbon radical with 1 to 6 carbon atoms, R′, R˝ and R‴ independently denote saturated or unsaturated hydrocarbon radicals containing 1 to 18 carbon atoms, saturated or unsaturated organic radicals consisting of carbon, hydrogen and oxygen; carbon, hydrogen and sulfur; or carbon, hydrogen and nitrogen, and X denotes an anion.
Claim 3
Dependent Claim
81 words
An antimicrobial superabsorbent composition comprising a crosslinked hydrophilic polymer gel having covalently bonded thereto a silane of the general formula Y₃SiRN⁺R′R˝R‴X⁻ where Y denotes a hydrolyzable radical, R denotes a divalent hydrocarbon radical with 1 to 6 carbon atoms, R′, R˝ and R‴ independently denote saturated or unsaturated hydrocarbon radicals containing 1 to 18 carbon atoms, saturated or unsaturated organic radicals consisting of carbon, hydrogen and oxygen; carbon, hydrogen and sulfur; or carbon, hydrogen and nitrogen, and X denotes an anion.
Claim 4
Dependent Claim
81 words
An antimicrobial superabsorbent composition comprising a crosslinked hydrophilic polymer gel having covalently bonded thereto a silane of the general formula Y₃SiRN⁺R′R˝R‴X⁻ where Y denotes a hydrolyzable radical, R denotes a divalent hydrocarbon radical with 1 to 6 carbon atoms, R′, R˝ and R‴ independently denote saturated or unsaturated hydrocarbon radicals containing 1 to 18 carbon atoms, saturated or unsaturated organic radicals consisting of carbon, hydrogen and oxygen; carbon, hydrogen and sulfur; or carbon, hydrogen and nitrogen, and X denotes an anion.
Claim 5
Dependent Claim
82 words
An antimicrobial superabsorbent composition comprising a crosslinked hydrophilic acrylic-based polymer gel having covalently bonded thereto a silane of the general formula Y₃SiRN⁺R′R˝R‴X⁻ where Y denotes a hydrolyzable radical, R denotes a divalent hydrocarbon radical with 1 to 6 carbon atoms, R′, R˝ and R‴ independently denote saturated or unsaturated hydrocarbon radicals containing 1 to 18 carbon atoms, saturated or unsaturated organic radicals consisting of carbon, hydrogen and oxygen; carbon, hydrogen and sulfur; or carbon, hydrogen and nitrogen, and X denotes an anion.
Claim 6
Dependent Claim
82 words
An antimicrobial superabsorbent composition comprising a crosslinked hydrophilic acrylic-based polymer gel having covalently bonded thereto a silane of the general formula Y₃SiRN⁺R′R˝R‴X⁻ where Y denotes a hydrolyzable radical, R denotes a divalent hydrocarbon radical with 1 to 6 carbon atoms, R′, R˝ and R‴ independently denote saturated or unsaturated hydrocarbon radicals containing 1 to 18 carbon atoms, saturated or unsaturated organic radicals consisting of carbon, hydrogen and oxygen; carbon, hydrogen and sulfur; or carbon, hydrogen and nitrogen, and X denotes an anion.
Claim 7
Dependent Claim
90 words
An antimicrobial superabsorbent composition comprising a crosslinked hydrophilic sodium salt form of a partially neutralized acrylic acid-based polymer gel having covalently bonded thereto a silane of the general formula Y₃SiRN⁺R′R˝R‴X⁻ where Y denotes a hydrolyzable radical, R denotes a divalent hydrocarbon radical with 1 to 6 carbon atoms, R′, R˝ and R‴ independently denote saturated or unsaturated hydrocarbon radicals containing 1 to 18 carbon atoms, saturated or unsaturated organic radicals consisting of carbon, hydrogen and oxygen; carbon, hydrogen and sulfur; or carbon, hydrogen and nitrogen, and X denotes an anion.
Claim 8
Dependent Claim
90 words
An antimicrobial superabsorbent composition comprising a crosslinked hydrophilic sodium salt form of a partially neutralized acrylic acid-based polymer gel having covalently bonded thereto a silane of the general formula Y₃SiRN⁺R′R˝R‴X⁻ where Y denotes a hydrolyzable radical, R denotes a divalent hydrocarbon radical with 1 to 6 carbon atoms, R′, R˝ and R‴ independently denote saturated or unsaturated hydrocarbon radicals containing 1 to 18 carbon atoms, saturated or unsaturated organic radicals consisting of carbon, hydrogen and oxygen; carbon, hydrogen and sulfur; or carbon, hydrogen and nitrogen, and X denotes an anion.
Claim 9
Independent Claim
113 words
The method of inhibiting the proliferation of potentially destructive microorganisms on a substrate comprising treating the substrate with an effective amount of an antimicrobial superabsorbent composition formed of a crosslinked hydrophilic sodium salt form of a partially neutralized acrylic acid-based polymer gel having covalently bonded thereto a silane of the general formula Y₃SiRN⁺R′R˝R‴X⁻ where Y denotes a hydrolyzable radical, R denotes a divalent hydrocarbon radical with 1 to 6 carbon atoms, R′, R˝ and R‴ independently denote saturated or unsaturated hydrocarbon radicals containing 1 to 18 carbon atoms, saturated or unsaturated organic radicals consisting of carbon, hydrogen and oxygen; carbon, hydrogen and sulfur; or carbon, hydrogen and nitrogen, and X denotes an anion.
Claim 10
Independent Claim
113 words
The method of inhibiting the proliferation of potentially destructive microorganisms on a substrate comprising treating the substrate with an effective amount of an antimicrobial superabsorbent composition formed of a crosslinked hydrophilic sodium salt form of a partially neutralized acrylic acid-based polymer gel having covalently bonded thereto a silane of the general formula Y₃SiRN⁺R′R˝R‴X⁻ where Y denotes a hydrolyzable radical, R denotes a divalent hydrocarbon radical with 1 to 6 carbon atoms, R′, R˝ and R‴ independently denote saturated or unsaturated hydrocarbon radicals containing 1 to 18 carbon atoms, saturated or unsaturated organic radicals consisting of carbon, hydrogen and oxygen; carbon, hydrogen and sulfur; or carbon, hydrogen and nitrogen, and X denotes an anion.
Claim 11
Independent Claim
135 words
The method of reducing odor and simultaneously controlling diaper rash by the suppression of bacteria that attack urinary urea with the liberation of ammonia comprising impregnating the diaper fabric with an effective amount of a composition for controlling the spread of infection, the composition being an antimicrobial superabsorbent formed of a crosslinked hydrophilic sodium salt form of a partially neutralized acrylic acid-based polymer gel having covalently bonded thereto a silane of the general formula Y₃SiRN⁺R′R˝R‴X⁻ where Y denotes a hydrolyzable radical, R denotes a divalent hydrocarbon radical with 1 to 6 carbon atoms, R′, R˝ and R‴ independently denote saturated or unsaturated hydrocarbon radicals containing 1 to 18 carbon atoms, saturated or unsaturated organic radicals consisting of carbon, hydrogen and oxygen; carbon, hydrogen and sulfur; or carbon, hydrogen and nitrogen, and X denotes an anion.
Claim 12
Independent Claim
135 words
The method of reducing odor and simultaneously controlling diaper rash by the suppression of bacteria that attack urinary urea with the liberation of ammonia comprising impregnating the diaper fabric with an effective amount of a composition for controlling the spread of infection, the composition being an antimicrobial superabsorbent formed of a crosslinked hydrophilic sodium salt form of a partially neutralized acrylic acid-based polymer gel having covalently bonded thereto a silane of the general formula Y₃SiRN⁺R′R˝R‴X⁻ where Y denotes a hydrolyzable radical, R denotes a divalent hydrocarbon radical with 1 to 6 carbon atoms, R′, R˝ and R‴ independently denote saturated or unsaturated hydrocarbon radicals containing 1 to 18 carbon atoms, saturated or unsaturated organic radicals consisting of carbon, hydrogen and oxygen; carbon, hydrogen and sulfur; or carbon, hydrogen and nitrogen, and X denotes an anion.
Claim 13
Dependent Claim
153 words
An article of manufacture comprising an antimicrobial superabsorbent composition comprised of a crosslinked hydrophilic sodium salt form of a partially neutralized acrylic acid-based polymer gel having covalently bonded thereto an organosilane having the general formula selected from the group consisting of wherein, in each formula, R is an alkyl radical of 1 to 4 carbon atoms or hydrogen; a has a value of 0, 1 or 2; R′ is a methyl or ethyl radical; R˝ is an alkylene group of 1 to 4 carbon atoms; R‴, R′′′′ and R v are each independently selected from a group consisting of alkyl radicals of 1 to 18 carbon atoms, -CH₂C₆H₅, -CH₂CH₂OH, -CH₂OH and -(CH₂) x NHC(O)R vi , wherein x has a value of from 2 to 10 and R vi is a perfluoroalkyl radical having from 1 to 12 carbon atoms; X is chloride, bromide, fluoride, iodide, acetate or tosylate; and Ph is phenyl.
Claim 14
Dependent Claim
153 words
An article of manufacture comprising an antimicrobial superabsorbent composition comprised of a crosslinked hydrophilic sodium salt form of a partially neutralized acrylic acid-based polymer gel having covalently bonded thereto an organosilane having the general formula selected from the group consisting of wherein, in each formula, R is an alkyl radical of 1 to 4 carbon atoms or hydrogen; a has a value of 0, 1 or 2; R′ is a methyl or ethyl radical; R˝ is an alkylene group of 1 to 4 carbon atoms; R‴, R′′′′ and R v are each independently selected from a group consisting of alkyl radicals of 1 to 18 carbon atoms, -CH₂C₆H₅, -CH₂CH₂OH, -CH₂OH and -(CH₂) x NHC(O)R vi , wherein x has a value of from 2 to 10 and R vi is a perfluoroalkyl radical having from 1 to 12 carbon atoms; X is chloride, bromide, fluoride, iodide, acetate or tosylate; and Ph is phenyl.
References Cited (Backward Citations)
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