Patent US1758674A successfully refreshed from Google Patents.
EP0155155A2
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EP
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Antimicrobially effective organic foams and methods for their preparation
Assignee: Dow Silicones Corp
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Filing: 1985-03-08
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Granted: —
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Expires: 2005-03-08
Abstract
Abstract What is disclosed is a method for preparing antimicrobially effective foams using certain silanes as co-catalysts, co-surfactants and antimicrobial agents to give soft, resilient, fine-celled foams that are capable of reducing the number of, or eliminating, microorganisms in all types of media. Such foams themselves are not susceptible to attack by the microorganisms. An example is the use of (CH 3 O) 3 Si(CH 2 ) 3 N°-(CH 3 ) 2 C 18 H 37 Cl - in a flexible polyurethane foam formulation to give a fine-celled, soft, resilient foam which is antimicrobially effective over a long period of time.
Inventors
- 👤 David Robert Battice
- 👤 Michael Glen Hales
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 10:43
CPC Classifications
A; A01; A01N; A01N55/00; A01N25/00; A01N25/16; A61; A61P; A61P31/00; A61P31/04; C; C08; C08J; C08J9/00; C08J9/0014; C08J9/0042
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
178 words
A process for preparing an antimicrobially active stable foam which comprises (I) contacting and intimately mixing, prior to foaming, a foamable organic system and an organosilane having the general formula selected from the group consisting of and 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, -CH 2 C H 2 0H, -CH 2 0H, and -(CH 2 ) 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 (II) foaming the mixture from (I), and (III) allowing the foamable organic system to stabilize, whereby an antimicrobially active stable foam is obtained.
Claim 2
Dependent Claim
178 words
A process for preparing an antimicrobially active stable foam which comprises (I) contacting and intimately mixing, prior to foaming, a foamable organic system and an organosilane having the general formula selected from the group consisting of and 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, -CH 2 C H 2 0H, -CH 2 0H, and -(CH 2 ) 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 (II) foaming the mixture from (I), and (III) allowing the foamable organic system to stabilize, whereby an antimicrobially active stable foam is obtained.
Claim 3
Dependent Claim
132 words
A process as claimed in claim 1 wherein the organosilane has the formula wherein 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, -CH 2 C 6 H 5 , -CH 2 CH 2 OH, -CH 2 0H, and -(CH 2 ) 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.
Claim 4
Dependent Claim
62 words
A process as claimed in claim 1 wherein the organosilane has the formula wherein 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 of 1 to 4 carbon atoms; X is chloride, bromide, fluoride, iodide, acetate or tosylate.
Claim 5
Dependent Claim
10 words
A stable foam prepared by the process of claim 1.
Claim 6
Dependent Claim
10 words
An article when manufactured from the foam of claim 4.
References Cited (Backward Citations)
No citation records indexed.
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