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Patent US4631297A successfully refreshed from Google Patents.
US4631297A
Expired / Lapsed
US
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Antimicrobially effective organic foams and methods for their preparation
Assignee: Dow Silicones Corp
•
Filing: 1985-10-15
•
Granted: 1986-12-23
•
Expires: 2005-10-15
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.sup.⊕ (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 R. Battice
- 👤 Michael G. Hales
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:32
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0014; C08J9/0042; A; A01; A01N; A01N25/00; A01N25/16; A01N55/00; C08J2207/00; C08J2207/04; Y; Y10; Y10S; Y10S55/00; Y10S55/13
Claims Analysis
Total Claims: 110
Claim 1
Independent Claim
184 words
A process for preparing an antimicrobially active non-filled 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 ##STR9## 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, --CH 2 C 6 H 5 , --CH 2 CH 2 OH, --CH 2 OH, 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
184 words
A process for preparing an antimicrobially active non-filled 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 ##STR9## 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, --CH 2 C 6 H 5 , --CH 2 CH 2 OH, --CH 2 OH, 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
15 words
A process as claimed in claim 1 wherein the foamable organic system is a polyurethane.
Claim 4
Dependent Claim
13 words
A process as claimed in claim 2 wherein the polyurethane is polyether based.
Claim 5
Dependent Claim
13 words
A process as claimed in claim 2 wherein the polyurethane is polyester based.
Claim 6
Dependent Claim
15 words
A process as claimed in claim 1 wherein the foamable organic system is vinyl based.
Claim 7
Dependent Claim
15 words
A process as claimed in claim 1 wherein the foamable organic system is polystyrene based.
Claim 8
Dependent Claim
15 words
A process as claimed in claim 1 wherein the foamable organic system is nylon based.
Claim 9
Dependent Claim
133 words
A process as claimed in claim 1 wherein the organosilane has the formula ##STR10## 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 OH, 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 10
Dependent Claim
29 words
A process as claimed in claim 8 wherein a is zero, R is methyl, R" is propylene, R'", R"" and R v are each methyl and X is chloride.
Claim 11
Dependent Claim
30 words
A process as claimed in claim 8 wherein a is zero, R is methyl, R" is propylene, R'" and R"" are methyl, R v is butyl and X is chloride.
Claim 12
Dependent Claim
29 words
A process as claimed in claim 8 wherein a is zero, R is methyl, R" is propylene, R'", R"" and R v are each ethyl and X is chloride.
Claim 13
Dependent Claim
31 words
A process as claimed in claim 8 wherein a is zero, R is methyl, R" is propylene, R'" and R"" are each methyl, R v is octadecyl and X is chloride.
Claim 14
Dependent Claim
31 words
A process as claimed in claim 8 wherein a is zero, R is methyl, R" is propylene, R'" is methyl, R"" and R v are each decyl and X is chloride.
Claim 15
Dependent Claim
35 words
A process as claimed in claim 8 wherein a is zero, R is methyl, R" is propylene, R'" and R"" are methyl, R v is --CH 2 C 6 H 5 and X is chloride.
Claim 16
Dependent Claim
34 words
A process as claimed in claim 8 wherein a is zero, R is methyl, R" is propylene, R'" and R"" are methyl, R v is --CH 2 CH 2 OH and X is chloride.
Claim 17
Dependent Claim
30 words
A process as claimed in claim 8 wherein a is zero, R is ethyl, R" is propylene, R'" and R"" are methyl, R v is octadecyl and X is chloride.
Claim 18
Dependent Claim
30 words
A process as claimed in claim 8 wherein a is zero, R is ethyl, R" is propylene, R'" is methyl, R"" and R v are decyl and X is chloride.
Claim 19
Dependent Claim
33 words
A process as claimed in claim 8 wherein a is one, R is methyl, R' is methyl, R" is propylene, R'" and R"" are methyl, R v is octadecyl and X is chloride.
Claim 20
Dependent Claim
33 words
A process as claimed in claim 8 wherein a is one, R is ethyl, R' is methyl, R" is propylene, R'" and R"" are methyl, R v is octadecyl and X is chloride.
Claim 21
Dependent Claim
33 words
A process as claimed in claim 8 wherein a is one, R is methyl, R' is methyl, R" is propylene, R'" is methyl, R"" and R v are decyl and X is chloride.
Claim 22
Dependent Claim
33 words
A process as claimed in claim 8 wherein a is one, R is ethyl, R' is methyl, R" is propylene, R'" is methyl, R"" and R v are decyl and X is chloride.
Claim 23
Dependent Claim
33 words
A process as claimed in claim 8 wherein a is two, R is methyl, R' is methyl, R" is propylene, R'" and R"" are methyl, R v is octadecyl and X is chloride.
Claim 24
Dependent Claim
33 words
A process as claimed in claim 8 wherein a is two, R is ethyl, R' is methyl, R" is propylene, R'" and R"" are methyl, R v is octadecyl and X is chloride.
Claim 25
Dependent Claim
33 words
A process as claimed in claim 8 wherein a is two, R is ethyl, R' is methyl, R" is propylene, R'" is methyl, R"" and R v are decyl and X is chloride.
Claim 26
Dependent Claim
33 words
A process as claimed in claim 8 wherein a is two, R is ethyl, R' is methyl, R" is propylene, R'" is methyl, R"" and R v are decyl and X is chloride.
Claim 27
Dependent Claim
35 words
A process as claimed in claim 8 wherein a is zero, R is methyl, R" is propylene, R'" and R"" are methyl, R v is --(CH 2 ) x NHC(O)R vi and X is chloride.
Claim 28
Dependent Claim
25 words
A process as claimed in claim 26 wherein x has a value of 2 and R vi is --(CF 2 ) 6 CF 3 .
Claim 29
Dependent Claim
25 words
A process as claimed in claim 26 wherein x has a value of 3 and R vi is --(CF 2 ) 6 CF 3 .
Claim 30
Dependent Claim
63 words
A process as claimed in claim 1 wherein the organosilane has the formula ##STR11## 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 31
Dependent Claim
27 words
A process as claimed in claim 29 wherein a is zero, R is methyl, R" is propylene, X is chloride and bonded to a pyridinyl nitrogen atom.
Claim 32
Dependent Claim
27 words
A process as claimed in claim 29 wherein a is zero, R is ethyl, R" is propylene, X is chloride and bonded to a pyridinyl nitrogen atom.
Claim 33
Dependent Claim
27 words
A process as claimed in claim 29 wherein a is zero, R is hydrogen, R" is propylene, X is chloride and bonded to a pyridinyl nitrogen atom.
Claim 34
Dependent Claim
10 words
A stable foam prepared by the process of claim 1.
Claim 35
Dependent Claim
10 words
A stable foam prepared by the process of claim 2.
Claim 36
Dependent Claim
10 words
A stable foam prepared by the process of claim 3.
Claim 37
Dependent Claim
10 words
A stable foam prepared by the process of claim 4.
Claim 38
Dependent Claim
10 words
A stable foam prepared by the process of claim 5.
Claim 39
Dependent Claim
10 words
A stable foam prepared by the process of claim 6.
Claim 40
Dependent Claim
10 words
An article when manufactured from the foam of claim 33.
Claim 41
Dependent Claim
10 words
An article when manufactured from the foam of claim 34.
Claim 42
Dependent Claim
10 words
An article when manufactured from the foam of claim 35.
Claim 43
Dependent Claim
10 words
An article when manufactured from the foam of claim 36.
Claim 44
Dependent Claim
10 words
An article when manufactured from the foam of claim 37.
Claim 45
Dependent Claim
10 words
An article when manufactured from the foam of claim 38.
Claim 46
Dependent Claim
11 words
An article as claim in claim 39 which is a backing.
Claim 47
Dependent Claim
11 words
An article as claimed in claim 45 which is carpet backing.
Claim 48
Dependent Claim
12 words
An article as claimed in claim 45 which is a curtain backing.
Claim 49
Dependent Claim
13 words
An article as claimed in claim 45 which is a wall rug backing.
Claim 50
Dependent Claim
13 words
An article as claimed in claim 45 which is a wall hanging backing.
Claim 51
Dependent Claim
11 words
An article as claimed in claim 39 which is a mattress.
Claim 52
Dependent Claim
11 words
An article as claimed in claim 39 which is a cushion.
Claim 53
Dependent Claim
12 words
An article as claimed in claim 51 which is an auto cushion.
Claim 54
Dependent Claim
12 words
An article as claimed in claim 51 which is a furniture cushion.
Claim 55
Dependent Claim
11 words
An article as claimed in claim 39 which is a pillow.
Claim 56
Dependent Claim
12 words
An article as claimed in claim 39 which is a lapidus pad.
Claim 57
Dependent Claim
12 words
An article as claimed in claim 39 which is a decubitus pad.
Claim 58
Dependent Claim
12 words
An article as claimed in claim 39 which is an air filter.
Claim 59
Dependent Claim
14 words
An article as claimed in claim 57 which is a clean room air filter.
Claim 60
Dependent Claim
13 words
An article as claimed in claim 57 which is an air conditioning filter.
Claim 61
Dependent Claim
14 words
An article as claimed in claim 59 which is an industrial air conditioning filter.
Claim 62
Dependent Claim
14 words
An article as claimed in claim 59 which is a non-industrial air conditioning filter.
Claim 63
Dependent Claim
13 words
An article as claimed in claim 61 which is an automotive air filter.
Claim 64
Dependent Claim
13 words
An article as claimed in claim 61 which is a residential air filter.
Claim 65
Dependent Claim
14 words
An article as claimed in claim 39 which is a filter for a liquid.
Claim 66
Dependent Claim
13 words
An article as claimed in claim 64 which is a filter for blood.
Claim 67
Dependent Claim
14 words
An article as claimed in claim 64 which is a filter for blood products.
Claim 68
Dependent Claim
14 words
An article as claimed in claim 64 which is a filter for fermented spirits.
Claim 69
Dependent Claim
13 words
An article as claimed in claim 67 wherein the fermented spirit is wine.
Claim 70
Dependent Claim
13 words
An article as claimed in claim 67 wherein the fermented spirit is beer.
Claim 71
Dependent Claim
13 words
An article as claimed in claim 64 which is a filter for water.
Claim 72
Dependent Claim
13 words
An article as claimed in claim 70 which is a swimming pool filter.
Claim 73
Dependent Claim
13 words
An article as claimed in claim 70 which is a coolant system filter.
Claim 74
Dependent Claim
13 words
An article as claimed in claim 70 which is a waste water filter.
Claim 75
Dependent Claim
13 words
An article as claimed in claim 70 which is a potable water filter.
Claim 76
Dependent Claim
12 words
An article as claimed in claim 70 which is an aquarium filter.
Claim 77
Dependent Claim
13 words
An article as claimed in claim 64 which is a filter for milk.
Claim 78
Dependent Claim
11 words
An article as claimed in claim 39 which is a sponge.
Claim 79
Dependent Claim
12 words
An article as claimed in claim 39 which is a humidifier belt.
Claim 80
Dependent Claim
13 words
An article as claimed in claim 39 which is used for thermal insulation.
Claim 81
Dependent Claim
19 words
A process as claimed in claim 1 wherein the foamable organic system containing the silane is sprayed in place.
Claim 82
Dependent Claim
21 words
A process as claimed in claim 80 wherein the foamable organic system containing the silane is applied from an aerosol package.
Claim 83
Dependent Claim
14 words
An article as claimed in claim 39 which is a filter for a gas.
Claim 84
Dependent Claim
12 words
An article as claimed in claim 82 wherein the gas is air.
Claim 85
Dependent Claim
12 words
An article as claimed in claim 82 wherein the gas is oxygen.
Claim 86
Dependent Claim
12 words
An article as claimed in claim 82 wherein the gas is nitrogen.
Claim 87
Dependent Claim
13 words
An article as claimed in claim 82 wherein the gas is carbon dioxide.
Claim 88
Dependent Claim
27 words
A method of sterilizing a liquid which method comprises passing the liquid through a foam filter, said foam filter being prepared by the process of claim 1.
Claim 89
Dependent Claim
17 words
A method as claimed in claim 87 wherein the foam is polyurethane and the liquid is water.
Claim 90
Dependent Claim
17 words
A method as claimed in claim 87 wherein the foam is polyurethane and the liquid is blood.
Claim 91
Dependent Claim
19 words
A method as claimed in claim 87 wherein the foam is polyurethane and the liquid is a blood product.
Claim 92
Dependent Claim
19 words
A method as claimed in claim 87 wherein the foam is polyurethane and the liquid is a fermented spirit.
Claim 93
Dependent Claim
17 words
A method as claimed in claim 87 wherein the foam is polyurethane and the liquid is milk.
Claim 94
Dependent Claim
25 words
A method of sterilizing a gas which method comprises passing the gas through a foam, said foam being prepared by the process of claim 1.
Claim 95
Dependent Claim
12 words
A method as claimed in claim 93 wherein the gas is air.
Claim 96
Dependent Claim
12 words
A method as claimed in claim 93 wherein the gas is oxygen.
Claim 97
Dependent Claim
12 words
A method as claimed in claim 93 wherein the gas is nitrogen.
Claim 98
Dependent Claim
13 words
A method as claimed in claim 93 wherein the gas is carbon dioxide.
Claim 99
Dependent Claim
14 words
A method as claimed in claim 93 wherein there is a mixture of gases.
Claim 100
Dependent Claim
185 words
A process for preparing an antimicrobially active non-siliceous filled 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 ##STR12## 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, --CH 2 C 6 H 5 , --CH 2 CH 2 OH, --CH 2 OH, 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 101
Dependent Claim
185 words
A process for preparing an antimicrobially active non-siliceous filled 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 ##STR12## 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, --CH 2 C 6 H 5 , --CH 2 CH 2 OH, --CH 2 OH, 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 102
Dependent Claim
133 words
A process as claimed in claim 99 wherein the organosilane has the formula ##STR13## 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 OH, 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 103
Dependent Claim
31 words
A process as claimed in claim 100 wherein a is zero, R is methyl, R" is propylene, R'" and R"" are each methyl, R v is octadecyl and X is chloride.
Claim 104
Dependent Claim
31 words
A process as claimed in claim 100 wherein a is zero, R is methyl, R" is propylene, R'" is methyl, R"" and R v are each decyl and X is chloride.
Claim 105
Dependent Claim
10 words
A stable foam prepared by the process of claim 99.
Claim 106
Dependent Claim
10 words
An article when manufactured from the foam of claim 103.
Claim 107
Dependent Claim
11 words
An article as claimed in claim 104 which is a backing.
Claim 108
Dependent Claim
11 words
An article as claimed in claim 105 which is carpet backing.
Claim 109
Dependent Claim
12 words
An article as claimed in claim 105 which is a curtain backing.
Claim 110
Dependent Claim
19 words
A process as claimed in claim 99 wherein the foamable organic system containing the silane is sprayed in place.
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| 3.5 Years (Year 4) | 1989-12-22 | 1990-06-23 | 1990-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-12-22 | 1994-06-23 | 1994-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-12-22 | 1998-06-23 | 1998-12-23 | $7700.00 | Window Closed / Lapsed |