Ink composition for indicating the progress of sterilization with ethylene oxide
First Claim
1. An ink composition for indicating the progress of sterilization with ethylene oxide which comprises;
- (1) at least one disperse dye of the general formula
space="preserve" listing-type="equation">A--N═
N--B wherein A is the residue of a heterocyclic compound containing a nitrogen atom which is not substituted with an alkyl group and selected from the group consisting of the pyridine, quinoline, isoquinoline, triazole, tetrazole, indazole, thiazole, benzothiazole and thiadiazole rings, which residue may optionally have one or more undissociated substituents, and B is a coupling component,(2) at least one binder component selected from the group consisting of polyacrylic acid, polymethacrylic acid and acrylic acid-methacrylic acid copolymers,(3) at least one ultrafine filler selected from the group consisting of ultrafine particles of aluminum oxide and titanium oxide and having a mean primary particle size of about 5 to about 100 nm and a specific surface area of about 10 to about 1,000 m2 /g as determined by the BET method, and(4) at least one polar solvent, the amount of components (1), (2), (3) and (4) being 0.05 to 3%, 0.5 to 50%, 0.05 to 10% and 30 to 95%, respectively, based on the weight of the ink.
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Abstract
An ink composition for indicating the progress of sterilization with EO is provided which comprises;
(1) at least one disperse dye of the general formula
A--N═N--B
wherein A is the residue of a heterocyclic compound containing nitrogen atom which is not substituted with alkyl group and selected from the group consisting of the pyridine, quinoline, isoquinoline, triazole, tetrazole, indazole, thiazole, benzothiazole and thiadiazole rings, which residue may optionally have one or more undissociated substituents, and B is a coupling component,
(2) at least one binder component selected from the group consisting of polyacrylic acid, polymethacrylic acid and acrylic acid-methacrylic acid copolymers,
(3) at least one ultrafine filler selected from the group consisting of ultrafine particles of silica, aluminum oxide and titanium oxide, and
(4) at least one polar solvent.
25 Citations
10 Claims
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1. An ink composition for indicating the progress of sterilization with ethylene oxide which comprises;
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(1) at least one disperse dye of the general formula
space="preserve" listing-type="equation">A--N═
N--Bwherein A is the residue of a heterocyclic compound containing a nitrogen atom which is not substituted with an alkyl group and selected from the group consisting of the pyridine, quinoline, isoquinoline, triazole, tetrazole, indazole, thiazole, benzothiazole and thiadiazole rings, which residue may optionally have one or more undissociated substituents, and B is a coupling component, (2) at least one binder component selected from the group consisting of polyacrylic acid, polymethacrylic acid and acrylic acid-methacrylic acid copolymers, (3) at least one ultrafine filler selected from the group consisting of ultrafine particles of aluminum oxide and titanium oxide and having a mean primary particle size of about 5 to about 100 nm and a specific surface area of about 10 to about 1,000 m2 /g as determined by the BET method, and (4) at least one polar solvent, the amount of components (1), (2), (3) and (4) being 0.05 to 3%, 0.5 to 50%, 0.05 to 10% and 30 to 95%, respectively, based on the weight of the ink. - View Dependent Claims (2, 3, 4, 5)
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6. A method of indicating the progress of ethylene oxide sterilization which comprises using an ink composition comprising;
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(1) at least one disperse dye of the general formula
space="preserve" listing-type="equation">A--N═
N--Bwherein A is the residue of a heterocyclic compound containing a nitrogen atom which is not substituted with an alkyl group and selected from the group consisting of the pyridine, quinoline, isoquinoline, triazole, tetrazole, indazole, thiazole, benzothiazole and thiadiazole rings, which residue may optionally have one or more undissociated substituents, and B is a coupling component, (2) at least one binder component selected from the group consisting of polyarcylic acid, polymethacrylic acid and acrylic acid-methacrylic acid copolymers, (3) at least one ultrafine filler selected from the group consisting of ultrafine particles of aluminum oxide and titanium oxide and having a mean primary particle size of about 5 to about 100 nm and a specific surface area of about 10 to about 1,000 m2 /g as determined by the BET method, and (4) at least one polar solvent, the amount of components (1), (2), (3) and (4) being 0.05 to 3%, 0.5 to 50%, 0.05 to 10% and 30 to 95%, respectively, based on the weight of the ink. - View Dependent Claims (7, 8, 9, 10)
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Specification