EP0363993A2
Expired / Lapsed
EP
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Chimically sensitive, dimensionally-stable organosilicon material composition and techniques
Assignee: HP Inc
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Filing: 1989-10-16
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Granted: —
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Expires: 2009-10-16
Abstract
Abstract A dimensionally-stable organosilicon material composition and method for producing the material composition including non-crosslinkable, continuous phase silicone with silica filler material dispersed therethrough, and having dissolved therein a variably-radiative material (e.g., ruthenium dye) responsive to the concentration of a selected analyte (e.g., oxygen), and the products of a reaction between water and a modifier material selected for establishing the sensitivity of said variably-radiative material to the selected analyte.
Inventors
- 👤 Ganapati R. Mauze
- 👤 Darlene J. Spira-Solomon
- 👤 Robert R. Holloway
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 09:19
CPC Classifications
G; G01; G01N; G01N31/00; G01N31/22; C; C08; C08K; C08K13/00; C08K13/02
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
58 words
An analyte-concentration-responsive, dimensionally stable material composition, characterized by: a predetermined amount of continuous phase, non-reactive silicone; filler material dispersed in said silicone in a sufficient amount dimensionally to stabilize said silicone; a selected amount of variably radiative material responsive to concentrations of a selected analyte; and means for establishing a selected sensitivity level for said variably radiative material.
Claim 2
Dependent Claim
58 words
An analyte-concentration-responsive, dimensionally stable material composition, characterized by: a predetermined amount of continuous phase, non-reactive silicone; filler material dispersed in said silicone in a sufficient amount dimensionally to stabilize said silicone; a selected amount of variably radiative material responsive to concentrations of a selected analyte; and means for establishing a selected sensitivity level for said variably radiative material.
Claim 3
Dependent Claim
26 words
The material composition according to claim 1, characterized by an amount of filler material insufficient to cause grittiness of texture, said filler material preferably including silica.
Claim 4
Dependent Claim
17 words
The material composition according to claim 1 or 2, characterized in that said silicone is index-of-refraction selectable.
Claim 5
Dependent Claim
22 words
The material composition according to claim 2, characterized in that said silica particles are on the order of 0,024 microns in diameter.
Claim 6
Dependent Claim
29 words
The material composition according to one of claims 1 to 4, characterized in that the mass concentration of said filler material to silicone is sufficient to provide dimensional stability.
Claim 7
Dependent Claim
31 words
The material composition according to one of claims 1 to 5, characterized in that said silicone includes functional groups which are non-reactive with said means for establishing a selected sensitivity level.
Claim 8
Dependent Claim
25 words
The material composition according to one of claims 1 to 6, characterized in that said variably radiative material has an affinity for said filler material.
Claim 9
Dependent Claim
20 words
The material composition according to one of claims 1 to 7, characterized in that said variably radiative material is luminescent.
Claim 10
Dependent Claim
75 words
The material composition according to one of claims 1 to 8, characterized in that products of chemical reaction between water and a selected modifier material are provided, at least one of said products being formed by said means for establishing a selected sensitivity level for said variably radiative material by controlling the affinity of said variably radiative material to said silica material, whereby the sensitivity of said material composition to ambient analyte concentrations is controllable.
Claim 11
Dependent Claim
29 words
The material composition according to one of claims 1 to 9, characterized in that said silicone material includes functional groups selected from a group consisiting of alkyl and aryl.
Claim 12
Dependent Claim
28 words
The material composition according to one of claims 2 to 10, characterized in that the mass concentration of silica material to silicone is on the order of 10%.
Claim 13
Dependent Claim
25 words
The material composition according to one of claims 1 to 11, characterized in that said means for establishing a selected sensitivity level is acetic acid.
Claim 14
Dependent Claim
20 words
The material composition according to one of claims 8 to 12, characterized in that said variably luminescent material includes ruthenium.
Claim 15
Dependent Claim
20 words
The material composition according to one of claims 9 to 13, characterized in that said modifier material includes a triacetoxysilane.
Claim 16
Dependent Claim
18 words
The material composition according to one of claims 1 to 14, characterized in that said silicone includes polydimethylsiloxane.
Claim 17
Dependent Claim
60 words
Use of the material composition according to claim 12 for determining oxygen concentrations, characterized in that said acetic acid is effective for modifying the sensitivity of said variably luminescent material to oxygen in accordance with the amount of acetic acid produced, and said continuous phase silicone includes exclusively functional groups which are inert with respect to said products of reaction.
Claim 18
Independent Claim
108 words
A method of preparing a material composition for chemically sensing selected analytes, characterized by the steps of: preparing a first solution of a selected vehicle and a variably radiative material effective for radiating in relationship to the concentration of a selected analyte; preparing a second solution of said selected vehicle, a predetermined amount of silicone, and an amount of modifier material corresponding to the extent of a desired modification of said variably radiative material to analyte concentrations; adding a sufficient amount of silica to said second solution to establish dimensional stability for said material composition upon removal from solution; and combining amounts of said first and second solutions.
Claim 19
Independent Claim
108 words
A method of preparing a material composition for chemically sensing selected analytes, characterized by the steps of: preparing a first solution of a selected vehicle and a variably radiative material effective for radiating in relationship to the concentration of a selected analyte; preparing a second solution of said selected vehicle, a predetermined amount of silicone, and an amount of modifier material corresponding to the extent of a desired modification of said variably radiative material to analyte concentrations; adding a sufficient amount of silica to said second solution to establish dimensional stability for said material composition upon removal from solution; and combining amounts of said first and second solutions.
Claim 20
Dependent Claim
12 words
The method according to claim 17, characterized by homogenizing said material composition.
Claim 21
Dependent Claim
18 words
The method according to claim 17 or 18, characterized by removing said selected vehicle from said material composition.
Claim 22
Independent Claim
34 words
The method according to one of claims 17 to 19, characterized in that the mass ratios of modifier material and silica to silicone are each on the order of one (1) over ten (10).
Claim 23
Independent Claim
31 words
The method according to one of claims 16 to 19, characterized in that the mass ratios of silicone to variably radiative material is on the order of 8000 over one (1).
Claim 24
Independent Claim
98 words
The method according to one of claims 17 to 21 for preparing a variably-radiative, dimensionally stable organosilicon material composition for sensing oxygen concentrations, characterized by: (1) dissolving a predetermined amount of silicone in a selected vehicle; (2) dissolving a predetermined amount of a selected modifier material in said selected vehicle, effective for establishing a desired relationship be tween radiativity and oxygen concentration in said material composition; (3) adding a sufficient amount of silica to establish dimensional stability for said material composition; and (4) adding a sufficient amount of a selected oxygen-sensitive, variably radiative material to enable oxygen sensing.
Claim 25
Dependent Claim
33 words
The method according to claim 22, characterized in that said selective vehicle is chloroform with a selected amount of a modifier material to establish a predetermined range of luminescence in said material composition.
Claim 26
Dependent Claim
17 words
The method according to claim 23, characterized in that said modifier material is a silane, particularly triacetoxysilane.
References Cited (Backward Citations)
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