WO2017018373A1 - 潜在指紋検出用組成物 - Google Patents
潜在指紋検出用組成物 Download PDFInfo
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- WO2017018373A1 WO2017018373A1 PCT/JP2016/071699 JP2016071699W WO2017018373A1 WO 2017018373 A1 WO2017018373 A1 WO 2017018373A1 JP 2016071699 W JP2016071699 W JP 2016071699W WO 2017018373 A1 WO2017018373 A1 WO 2017018373A1
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- cyanoacrylate
- latent fingerprint
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- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
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Definitions
- the present invention relates to detection of latent fingerprints in the field of identification.
- a latent fingerprint is a raised part of the skin (skin ridges, hereinafter referred to as “fingerprints”) when a substance secreted from the fingertips adheres to an article left at the crime scene (hereinafter also referred to as “specimen”). It was also impressed in the form of ridges.
- Substances secreted from the fingertip include inorganic components such as sodium chloride, potassium chloride, calcium chloride, lactic acid, amino acids, uric acid, lipids, proteins, vitamins, etc. in addition to water, which is the main component. . Since a latent fingerprint cannot be identified as it is, a chemical reaction or a physical adsorption reaction between a fingertip secretory component and a detection substance has been used for identification.
- Patent Document 1 discloses a composition comprising 2-cyanoacrylate, rhodamine 6G, trichloroethane, and chloroform.
- trichloroethane or chloroform hydrocarbons, other halogenated hydrocarbons, ethers, esters
- organic solvents such as alcohols, alcohols and ketones may be used.
- a solution containing 2-cyanoacrylate is suitable for detecting latent fingerprints.
- the attached latent fingerprint depends on the surface shape of the constituent member of the specimen (hereinafter also referred to as “fingerprint support member”)
- a fine protrusion is formed on the surface of the fingerprint support member.
- the fingertip secretion component will remain only at the front-end
- the composition of Patent Document 1 is used for such a specimen, the fingertip secretion component flows from the convex portion into the concave portion, and the latent fingerprint is deformed or disappeared, and the detection may be insufficient.
- composition of Patent Document 1 causes dissolution, swelling, or alteration of the constituent material of the fingerprint support member, and the specimen may be limited.
- An object of the present invention is not only when the latent fingerprint containing the fingertip secretion component is formed on the surface of the flat fingerprint support member, but also only on the surface of the convex portion in the fingerprint support member having a convex portion or a concave portion on the outermost surface
- a composition that can suppress the deformation or disappearance of a latent fingerprint, retain the pattern of the latent fingerprint, and can efficiently detect the latent fingerprint by light irradiation even when the latent fingerprint is formed. It is.
- the present invention contains 2-cyanoacrylate and silicone oil, and the content of silicone oil is 700 to 9000 parts by mass when the content of 2-cyanoacrylate is 100 parts by mass. It is a composition for detection.
- the latent fingerprint detection composition of the present invention can further contain a fluorescent dye, a stabilizer and the like.
- a latent fingerprint can be obtained by bringing the composition for detecting a latent fingerprint into contact with a specimen without causing dissolution or movement of the fingertip secretory component constituting the latent fingerprint, dissolution, swelling or alteration of the fingerprint support member. Since the composition is adsorbed to the constituents of the fingertips, and is hardened and whitened, a latent fingerprint pattern can be obtained with high accuracy. Depending on the color of the fingerprint support member, a light emitting pattern that reflects the latent fingerprint by irradiating visible light or the like after forming a whitened portion containing the fluorescent dye using the latent fingerprint detecting composition containing the fluorescent dye Can be obtained.
- a latent fingerprint containing a fingertip secretory component is formed on the surface of a flat fingerprint support member, but also a fingerprint support member (porous member having a surface with continuous fine protrusions and recesses)
- a fingerprint support member porous member having a surface with continuous fine protrusions and recesses
- the latent fingerprint detecting composition of the present invention is a liquid composition containing 2-cyanoacrylate and silicone oil in a specific ratio.
- the 2-cyanoacrylate is not particularly limited, and is a cyanoacrylate (cyclo) alkyl ester, cyanoacrylate aryl ester, cyanoacrylate alkenyl ester, cyanoacrylate alkynyl ester, cyanoacrylate alkoxyalkyl ester, cyanoalkyl haloalkyl. Esters and cyanoalkoxyalkyl haloalkoxyalkyl esters can be used.
- the 2-cyanoacrylate used in the present invention may be only one kind or a combination of two or more kinds.
- alkyl cyanoacrylate examples include methyl-2-cyanoacrylate, ethyl-2-cyanoacrylate, n-propyl-2-cyanoacrylate, isopropyl-2-cyanoacrylate, n-butyl-2-cyanoacrylate, isobutyl- Examples include 2-cyanoacrylate, n-hexyl-2-cyanoacrylate, n-octyl-2-cyanoacrylate, 2-ethylhexyl-2-cyanoacrylate, and cyclohexyl-2-cyanoacrylate.
- methyl-2-cyanoacrylate, ethyl-2-cyanoacrylate, n-propyl-2-cyanoacrylate and isopropyl-2-cyanoacrylate are preferred.
- the cyanoacrylic acid aryl ester include phenyl-2-cyanoacrylate and benzyl-2-cyanoacrylate.
- the cyanoacrylic acid alkenyl ester include allyl-2-cyanoacrylate.
- Examples of the cyanoacrylate alkynyl ester include propargyl-2-cyanoacrylate.
- Examples of the cyanoacrylic acid alkoxyalkyl ester include methoxymethyl-2-cyanoacrylate, methoxyethyl-2-cyanoacrylate, methoxybutyl-2-cyanoacrylate, ethoxyethyl-2-cyanoacrylate, and the like.
- Examples of the haloalkoxyalkyl esters of cyanoacrylic acid include 2-chloroethyl-2-cyanoacrylate, 2-chloroethoxyethyl-2-cyanoacrylate, 2,2,2-trifluoroethyl-2-cyanoacrylate, and the like.
- the 2-cyanoacrylate is preferably a cyanoacrylic acid alkyl ester, particularly preferably a cyanoacrylic acid alkyl ester having 1 to 3 carbon atoms in the alkyl moiety.
- the silicone oil is not particularly limited as long as it is liquid at 1 atm and 25 ° C. Either non-modified silicone oil or modified silicone oil may be used. Moreover, the silicone oil contained in the composition for detecting latent fingerprints of the present invention may be composed of only one kind, or may be composed of two or more kinds.
- the silicone oil may be a chain compound or a cyclic compound.
- chain compounds include 1,1,3,3-tetramethyldisiloxane, 1,3-diethyltetramethyldisiloxane, 1,1,3,3-tetraisopropyldisiloxane, pentamethyldisiloxane, hexamethyldisiloxane.
- Cyclic compounds include hexamethylcyclotrisiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, tetradecamethylcycloheptasiloxane, hexadecamethylcyclooctasiloxane, octadecamethylcyclonona.
- siloxane such as siloxane and eicosamethylcyclodecasiloxane; bis [(bicycloheptenyl) ethyl] tetramethyldisiloxane, bis-2- [3,4- (epoxycyclohexyl) ethyl] tetramethyldisiloxane Examples thereof include cycloalkylsiloxane.
- the silicone oil does not depend on the material and surface shape of the fingerprint support member, and the deformation or disappearance of the latent fingerprint is suppressed, the latent fingerprint pattern is retained, and a stable whitened portion is formed on the latent fingerprint. Since latent fingerprints can be easily detected, alkylsiloxanes are preferable, alkylsiloxanes having 2 to 10 silicon atoms are more preferable, and alkylsiloxanes having 2 to 5 silicon atoms are particularly preferable. As will be described later, the method of bringing the latent fingerprint detection composition of the present invention into contact with a specimen can be spraying, dipping, etc., and a composition having a viscosity according to the properties of the specimen can be used.
- the silicone oil is a component having a high content in the composition, the silicone oil has a boiling point at 1 atmosphere of preferably 90 ° C. to 300 ° C., more preferably 90 ° C. to 250 ° C. If it is an object, the latent fingerprint can be detected more quickly.
- the content of the silicone oil contained in the latent fingerprint detection composition of the present invention suppresses deformation or disappearance of the latent fingerprint, retains the pattern of the latent fingerprint, forms a stable whitened portion on the latent fingerprint, Since latent fingerprints can be easily detected, when the content of 2-cyanoacrylate is 100 parts by mass, it is 700 to 9000 parts by mass, preferably 1000 to 5000 parts by mass, and more preferably 1500 to 4500 parts. Part by mass.
- the latent fingerprint detecting composition of the present invention can further contain other components in addition to the above essential components, such as fluorescent dyes, stabilizers, thickeners, thixotropic agents, perfumes and the like. Can be contained.
- the cured portion formed by the polymerization of 2-cyanoacrylate is usually white, it is preferable to use a latent fingerprint detection composition containing a fluorescent dye depending on the color of the fingerprint support member.
- the fluorescent dye emits fluorescence by irradiating an electromagnetic wave (visible light) having a wavelength in the range of 400 to 800 nm to a sample obtained by dispersing in a powder of the homopolymer of 2-cyanoacrylate. If it is, it will not be specifically limited.
- anthraquinone dyes, naphthalimide dyes, and the like can be used because they are stable among 2-cyanoacrylate polymers and have high fluorescence sensitivity.
- the fluorescent dye used in the present invention may be only one kind or a combination of two or more kinds.
- anthraquinone dyes examples include aminoanthraquinone, aminohydroxyanthraquinone, diaminoanthraquinone, dihydroxyanthraquinone, and diaminodihydroxyanthraquinone.
- aminohydroxyanthraquinones such as 2-phenoxy-1-amino-4-hydroxyanthracene-9,10-dione (SOLVENT RED 146) are preferred.
- naphthalimide dyes examples include alkyl naphthalimide, alkoxy naphthalimide, alkoxyalkyl naphthalimide, amino naphthalimide, alkylamino naphthalimide, nitronaphthalimide, halogenated naphthalimide, carbonyl naphthalimide, phenylthionaphthalimide, and cyanonaphthalimide. And hydroxy naphthalimide.
- alkylaminonaphthalimides such as 2-butyl-6- (butylamino) -1H-benz [de] isoquinoline-1,3 (2H) -dione (SOLVENT YELLOW 43) are preferred.
- the solubility of the fluorescent dye in silicone oil is not particularly limited, but it is preferable to use a fluorescent dye soluble in silicone oil.
- the average particle diameter is preferably 0.1 ⁇ m or less.
- the content thereof is such that a sufficient luminescence intensity can be obtained by light irradiation, and the latent fingerprint can be easily detected.
- the stabilizer has an action of inhibiting the polymerization of 2-cyanoacrylate in the composition, and includes sulfurous acid gas, methanesulfonic acid, ethanesulfonic acid, HBF 4 , BF 3 ether complex, BF 3 acetic acid complex, hydroquinone Hydroquinone monomethyl ether, 2,6-di-tert-butyl-p-cresol, trifluoromethanesulfonic acid, carbon disulfide and the like can be used.
- the content thereof is 0.0001 to 1 part by mass, preferably 100 parts by mass of 2-cyanoacrylate, preferably The amount is 0.001 to 0.1 parts by mass, more preferably 0.001 to 0.05 parts by mass.
- the latent fingerprint detection composition of the present invention can be a uniform solution or a uniform dispersion, and the viscosity is preferably 0.5 to 20 mPa ⁇ s, more preferably 0.5 to 10 mPa ⁇ s.
- the viscosity of the composition was measured at a temperature of 25 ° C. by a method according to JIS K 6833-1 5.4.1 b) Method 2.
- the composition for detecting latent fingerprints of the present invention can be produced by mixing the above essential components or the above essential components and other components.
- a stabilizer it is preferable to prepare a mixture with 2-cyanoacrylate in advance.
- the raw material mixing method usage method, etc.
- the raw material mixing method can be selected according to the type of fluorescent dye, etc., and all raw materials may be mixed at once or dividedly mixed Also good.
- the latent fingerprint detecting composition of the present invention the latent fingerprint can be efficiently detected without being limited to the kind of the constituent material of the fingerprint supporting member. That is, latent fingerprints formed on the surface of a fingerprint support member made of any of inorganic materials such as metals, alloys and inorganic compounds, organic materials such as resins, and composite materials containing these materials can be detected.
- the surface shape of the fingerprint supporting member is not limited, and conventionally, detection by a known latent fingerprint detecting composition has been difficult, for example, brick, concrete block, plastic sintered porous body, slate It is particularly suitable for a fingerprint supporting member having a surface in which fine convex portions and concave portions are continuous, such as a porous member such as wood and paper, and a magnetic paper back surface such as a ticket.
- a fingerprint supporting member having a surface in which fine convex portions and concave portions are continuous, such as a porous member such as wood and paper, and a magnetic paper back surface such as a ticket.
- the composition for detecting a latent fingerprint of the present invention When the composition for detecting a latent fingerprint of the present invention is brought into contact with a specimen, the composition is adsorbed to the latent fingerprint having water and lipid, and 2-cyanoacrylate is polymerized simultaneously with the contact or at the time of drying to cause a surface of the latent fingerprint. A whitened portion is formed.
- the latent fingerprint pattern can be detected efficiently.
- the whitened portion is irradiated with light having a wavelength in the range of 400 to 800 nm, A light emission pattern reflecting the latent fingerprint can be obtained.
- Examples of the method of bringing the composition for detecting latent fingerprints of the present invention into contact with a specimen include spraying (spraying) and immersion methods.
- spraying spraying
- immersion methods immersion methods.
- a sprayer such as a mechanical sprayer, an electric sprayer, a pump spray, a trigger spray, and an aerosol can be used.
- the number of sprays on the same surface of the specimen is not particularly limited as long as the spray amount of 2-cyanoacrylate is preferably in the range of 0.000015 to 0.003 ml / cm 2 .
- the spray amount per one time is preferably 0.0005 to 1 ml / cm 2 , more preferably 0.001 to 0.1 ml / cm 2 . Further, when the specimen is immersed in the composition, it is preferable that the specimen is immersed in the composition at 0 ° C. to 40 ° C. for 0.1 to 5 minutes in a static state.
- Raw Material for Latent Fingerprint Detection Composition The raw materials used for the production of the latent fingerprint detection composition are as follows.
- ethyl-2-cyanoacrylate raw material As stabilizer, ethyl-2-cyanoacrylate (hereinafter referred to as “ethyl-2-cyanoacrylate raw material”) in which 200 mass ppm of sulfurous acid gas and 600 mass ppm of hydroquinone are added in advance is used. It was. 1-2. Fluorescent dye The following two types of products subjected to purification treatment were used. (1) Anthraquinone dyes 2-phenoxy-1-amino-4-hydroxyanthracene-9,10-dione “Kayaset Red B” (trade name) manufactured by Nippon Kayaku Co., Ltd.
- Silicone oil (1) Hexamethyldisiloxane (boiling point at 1 atm: 100 ° C.) (2) Decamethyltetrasiloxane (boiling point at 1 atm: 194 ° C.) (3) Decamethylcyclopentasiloxane (boiling point at 1 atm: 210 ° C.) 1-4. Stabilizer Sulfurous acid gas and hydroquinone were used. 1-5. Organic solvent For comparison, acetone, methyl ethyl ketone, benzene, hexane or chloroform was used in place of silicone oil.
- Example 1 Latent Fingerprint Detection on Brick Surface Uniform solution comprising 3.7 parts by weight of ethyl-2-cyanoacrylate raw material, 96.3 parts by weight of hexamethyldisiloxane, and 281.3 ⁇ 10 ⁇ 6 parts by weight of anthraquinone dye (composition for latent fingerprint detection) Got. The viscosity (25 ° C.) was 0.65 mPa ⁇ s. Next, the obtained latent fingerprint detecting composition was sprayed (spray amount 0.01 to 0.02 ml / cm 2 ) on bricks (FIG. 1) having latent fingerprints on the surface thereof.
- Example 2 Uniform solution comprising 5.5 parts by weight of ethyl-2-cyanoacrylate raw material, 94.5 parts by weight of hexamethyldisiloxane, and 368.1 ⁇ 10 ⁇ 6 parts by weight of anthraquinone dye (composition for latent fingerprint detection) Got.
- the viscosity 25 ° C.
- the viscosity was 0.65 mPa ⁇ s.
- the same operation as in Example 1 was performed, and clear light emission of the latent fingerprint could be observed by light irradiation.
- Example 3 Uniform solution comprising 5.5 parts by mass of ethyl-2-cyanoacrylate raw material, 94.5 parts by mass of hexamethyldisiloxane, and 36.8 ⁇ 10 ⁇ 6 parts by mass of anthraquinone dye (latent fingerprint detection composition) Got.
- the viscosity (25 ° C.) was 0.65 mPa ⁇ s.
- spraying similar to that in Example 1 was performed seven times, and then light emission was performed, whereby clear emission of latent fingerprints could be observed. These results are shown in Table 1. Since the latent fingerprint was detected after spraying the composition a plurality of times, the determination was made “ ⁇ ”.
- Example 4 Uniform solution comprising 3.7 parts by weight of ethyl-2-cyanoacrylate raw material, 96.3 parts by weight of octamethyltrisiloxane, and 281.3 ⁇ 10 ⁇ 6 parts by weight of anthraquinone dye (composition for latent fingerprint detection) Got.
- the viscosity 25 ° C.
- the viscosity was 1.0 mPa ⁇ s.
- the same operation as in Example 1 was performed, and clear light emission of the latent fingerprint could be observed by light irradiation.
- Example 5 Uniform solution comprising 5.5 parts by mass of ethyl-2-cyanoacrylate raw material, 94.5 parts by mass of octamethyltrisiloxane, and 368.1 ⁇ 10 ⁇ 6 parts by mass of anthraquinone dye (latent fingerprint detection composition) Got.
- the viscosity 25 ° C.
- the viscosity was 1.0 mPa ⁇ s.
- the same operation as in Example 1 was performed, and clear light emission of the latent fingerprint could be observed by light irradiation.
- Example 6 Uniform solution comprising 5.5 parts by mass of ethyl-2-cyanoacrylate raw material, 94.5 parts by mass of decamethyltetrasiloxane, and 368.1 ⁇ 10 ⁇ 6 parts by mass of anthraquinone dye (latent fingerprint detection composition) Got.
- the viscosity (25 ° C.) was 1.5 mPa ⁇ s.
- Example 1 the same operation as in Example 1 was performed, and clear light emission of the latent fingerprint could be observed by light irradiation.
- Example 7 Homogeneous solution comprising 5.5 parts by weight of ethyl-2-cyanoacrylate raw material, 94.5 parts by weight of decamethylcyclopentasiloxane, and 368.1 ⁇ 10 ⁇ 6 parts by weight of anthraquinone dye (composition for detecting latent fingerprints) )
- the viscosity 25 ° C.
- Example 1 The viscosity was 4.0 mPa ⁇ s.
- Example 1 was 4.0 mPa ⁇ s.
- Example 8 A homogeneous solution (composition for detecting latent fingerprints) comprising 3.7 parts by mass of ethyl-2-cyanoacrylate raw material, 96.3 parts by mass of hexamethyldisiloxane and 140.6 ⁇ 10 ⁇ 6 parts by mass of naphthalimide dye ) The viscosity (25 ° C.) was 0.65 mPa ⁇ s. Thereafter, the same operation as in Example 1 was performed, and clear light emission of the latent fingerprint could be observed by light irradiation. These results are shown in Table 1.
- Example 9 Homogeneous solution comprising 5.5 parts by mass of ethyl-2-cyanoacrylate raw material, 94.5 parts by mass of hexamethyldisiloxane, and 184.0 ⁇ 10 ⁇ 6 parts by mass of naphthalimide dye (composition for detecting latent fingerprints) )
- the viscosity 25 ° C.
- Example 9 Thereafter, the same operation as in Example 1 was performed, and clear light emission of the latent fingerprint could be observed by light irradiation.
- Example 10 A homogeneous solution comprising 5.5 parts by mass of ethyl-2-cyanoacrylate raw material, 94.5 parts by mass of hexamethyldisiloxane, and 18.4 ⁇ 10 ⁇ 6 parts by mass of naphthalimide dye (composition for detecting latent fingerprints) )
- the viscosity 25 ° C.
- the viscosity was 0.65 mPa ⁇ s.
- light emission was performed, whereby clear emission of latent fingerprints could be observed.
- Example 11 A homogeneous solution comprising 3.7 parts by weight of an ethyl-2-cyanoacrylate raw material, 96.3 parts by weight of octamethyltrisiloxane, and 140.6 ⁇ 10 ⁇ 6 parts by weight of a naphthalimide dye (composition for detecting latent fingerprints) )
- the viscosity 25 ° C.
- Example 1 Thereafter, the same operation as in Example 1 was performed, and clear light emission of the latent fingerprint could be observed by light irradiation.
- Example 12 A homogeneous solution comprising 5.5 parts by mass of ethyl-2-cyanoacrylate raw material, 94.5 parts by mass of octamethyltrisiloxane, and 184.0 ⁇ 10 ⁇ 6 parts by mass of naphthalimide dye (composition for detecting latent fingerprints) )
- the viscosity 25 ° C.
- Example 1 The viscosity was 1.0 mPa ⁇ s.
- Example 1 clear light emission of the latent fingerprint could be observed by light irradiation.
- Comparative Example 1 A uniform solution (composition for detecting latent fingerprints) consisting of 5.5 parts by mass of ethyl-2-cyanoacrylate raw material, 94.5 parts by mass of acetone, and 368.1 ⁇ 10 ⁇ 6 parts by mass of anthraquinone dye was obtained. .
- the viscosity (25 ° C.) was 0.34 mPa ⁇ s.
- Comparative Example 2 A uniform solution (composition for detecting latent fingerprints) comprising 5.5 parts by mass of ethyl-2-cyanoacrylate raw material, 94.5 parts by mass of methyl ethyl ketone, and 368.1 ⁇ 10 ⁇ 6 parts by mass of anthraquinone dye was obtained. .
- the viscosity (25 ° C.) was 0.4 mPa ⁇ s.
- Comparative Example 3 A homogeneous solution (composition for detecting latent fingerprints) comprising 5.5 parts by mass of ethyl-2-cyanoacrylate raw material, 94.5 parts by mass of benzene, and 368.1 ⁇ 10 ⁇ 6 parts by mass of anthraquinone dye was obtained. .
- the viscosity (25 ° C.) was 0.65 mPa ⁇ s.
- Comparative Example 4 A uniform solution (composition for detecting latent fingerprints) comprising 5.5 parts by mass of ethyl-2-cyanoacrylate raw material, 94.5 parts by mass of hexane, and 368.1 ⁇ 10 ⁇ 6 parts by mass of anthraquinone dye was obtained. .
- the viscosity (25 ° C.) was 0.33 mPa ⁇ s.
- Comparative Example 5 A uniform solution (composition for detecting latent fingerprints) comprising 5.5 parts by mass of ethyl-2-cyanoacrylate raw material, 94.5 parts by mass of chloroform, and 368.1 ⁇ 10 ⁇ 6 parts by mass of anthraquinone dye was obtained. .
- the viscosity (25 ° C.) was 0.57 mPa ⁇ s. Thereafter, the same operation as in Example 1 was performed, and no light emission was observed by light irradiation, and the latent fingerprint could not be detected. These results are shown in Table 1.
- Example 10 Latent Fingerprint Detection on the Backside (Magnetic Surface) of a Magnetic Ticket or on the Surface of a Polyethylene Bag
- a homogeneous solution comprising 2.3 parts by mass of an ethyl-2-cyanoacrylate raw material, 97.7 parts by mass of hexamethyldisiloxane, and 133.2 ⁇ 10 ⁇ 6 parts by mass of an anthraquinone dye Got.
- the viscosity (25 ° C.) was 0.65 mPa ⁇ s.
- the obtained latent fingerprint detecting composition is sprayed on the magnetic surface (FIG.
- Example 14 Uniform solution consisting of 3.7 parts by weight of ethyl-2-cyanoacrylate raw material, 96.3 parts by weight of hexamethyldisiloxane, and 187.5 ⁇ 10 ⁇ 6 parts by weight of anthraquinone dye (latent fingerprint detection composition) Got.
- the viscosity (25 ° C.) was 0.65 mPa ⁇ s.
- a polyethylene bag having a latent fingerprint on the surface thereof was subjected to the same operation as in Example 13, and clear emission of the latent fingerprint could be observed by light irradiation.
- Example 15 Uniform solution comprising 3.7 parts by mass of ethyl-2-cyanoacrylate raw material, 96.3 parts by mass of hexamethyldisiloxane, and 18.8 ⁇ 10 ⁇ 6 parts by mass of anthraquinone dye (composition for detecting latent fingerprints) Got.
- the viscosity 25 ° C.
- the viscosity was 0.65 mPa ⁇ s.
- Table 2 Since the latent fingerprint was detected after spraying the composition a plurality of times, the determination was “ ⁇ ”.
- Example 16 A homogeneous solution (composition for detecting latent fingerprints) comprising 2.3 parts by mass of an ethyl-2-cyanoacrylate raw material, 97.7 parts by mass of octamethyltrisiloxane, and 133.2 ⁇ 10 ⁇ 6 parts by mass of an anthraquinone dye Got.
- the viscosity (25 ° C.) was 1.0 mPa ⁇ s.
- a polyethylene bag having a latent fingerprint on the surface thereof was subjected to the same operation as in Example 13, and clear emission of the latent fingerprint could be observed by light irradiation.
- Example 17 Uniform solution comprising 3.7 parts by weight of ethyl-2-cyanoacrylate raw material, 96.3 parts by weight of octamethyltrisiloxane, and 187.5 ⁇ 10 ⁇ 6 parts by weight of anthraquinone dye (composition for latent fingerprint detection) Got.
- the viscosity (25 ° C.) was 1.0 mPa ⁇ s.
- a polyethylene bag having a latent fingerprint on the surface thereof was subjected to the same operation as in Example 13, and clear emission of the latent fingerprint could be observed by light irradiation.
- Example 18 Uniform solution comprising 3.7 parts by weight of ethyl-2-cyanoacrylate raw material, 96.3 parts by weight of decamethyltetrasiloxane, and 187.5 ⁇ 10 ⁇ 6 parts by weight of anthraquinone dye (latent fingerprint detection composition) Got.
- the viscosity (25 ° C.) was 1.5 mPa ⁇ s.
- a polyethylene bag having a latent fingerprint on the surface thereof was subjected to the same operation as in Example 13, and clear emission of the latent fingerprint could be observed by light irradiation.
- Example 19 A homogeneous solution (composition for detecting latent fingerprints) comprising 3.7 parts by mass of ethyl-2-cyanoacrylate raw material, 96.3 parts by mass of decamethylcyclopentasiloxane, and 187.5 ⁇ 10 ⁇ 6 parts by mass of anthraquinone dye )
- the viscosity (25 ° C.) was 4.0 mPa ⁇ s.
- a polyethylene bag having a latent fingerprint on the surface thereof was subjected to the same operation as in Example 13, and clear emission of the latent fingerprint could be observed by light irradiation.
- Example 20 A homogeneous solution (composition for detecting latent fingerprints) comprising 2.3 parts by mass of an ethyl-2-cyanoacrylate raw material, 97.7 parts by mass of hexamethyldisiloxane, and 66.6 ⁇ 10 ⁇ 6 parts by mass of a naphthalimide dye. ) The viscosity (25 ° C.) was 0.65 mPa ⁇ s. Thereafter, a polyethylene bag having a latent fingerprint on the surface thereof was subjected to the same operation as in Example 13, and clear emission of the latent fingerprint could be observed by light irradiation. These results are shown in Table 2.
- Example 21 A homogeneous solution (composition for detecting latent fingerprints) comprising 3.7 parts by mass of an ethyl-2-cyanoacrylate raw material, 96.3 parts by mass of hexamethyldisiloxane, and 93.8 ⁇ 10 ⁇ 6 parts by mass of a naphthalimide dye. ) The viscosity (25 ° C.) was 0.65 mPa ⁇ s. Thereafter, a polyethylene bag having a latent fingerprint on the surface thereof was subjected to the same operation as in Example 13, and clear emission of the latent fingerprint could be observed by light irradiation. These results are shown in Table 2.
- Example 22 A homogeneous solution (composition for detecting latent fingerprints) comprising 3.7 parts by mass of an ethyl-2-cyanoacrylate raw material, 96.3 parts by mass of hexamethyldisiloxane, and 9.4 ⁇ 10 ⁇ 6 parts by mass of a naphthalimide dye. )
- the viscosity (25 ° C.) was 0.65 mPa ⁇ s.
- the polyethylene bag having latent fingerprints on the surface thereof was sprayed five times in the same manner as in Example 13 and then irradiated with light, whereby clear emission of latent fingerprints could be observed.
- Table 2 Since the latent fingerprint was detected after spraying the composition a plurality of times, the determination was “ ⁇ ”.
- Example 23 A homogeneous solution comprising 2.3 parts by mass of an ethyl-2-cyanoacrylate raw material, 97.7 parts by mass of octamethyltrisiloxane, and 66.6 ⁇ 10 ⁇ 6 parts by mass of a naphthalimide dye (composition for detecting latent fingerprints) )
- the viscosity (25 ° C.) was 1.0 mPa ⁇ s.
- a polyethylene bag having a latent fingerprint on the surface thereof was subjected to the same operation as in Example 13, and clear emission of the latent fingerprint could be observed by light irradiation.
- Example 24 A homogeneous solution (composition for detecting latent fingerprints) comprising 3.7 parts by mass of an ethyl-2-cyanoacrylate raw material, 96.3 parts by mass of octamethyltrisiloxane, and 93.8 ⁇ 10 ⁇ 6 parts by mass of a naphthalimide dye. ) The viscosity (25 ° C.) was 1.0 mPa ⁇ s. Thereafter, a polyethylene bag having a latent fingerprint on the surface thereof was subjected to the same operation as in Example 13, and clear emission of the latent fingerprint could be observed by light irradiation. These results are shown in Table 2.
- Comparative Example 6 A uniform solution (composition for detecting latent fingerprints) comprising 3.7 parts by mass of ethyl-2-cyanoacrylate raw material, 96.3 parts by mass of acetone, and 187.5 ⁇ 10 ⁇ 6 parts by mass of anthraquinone dye was obtained. .
- the viscosity (25 ° C.) was 0.34 mPa ⁇ s.
- Comparative Example 7 A uniform solution (composition for detecting latent fingerprints) consisting of 3.7 parts by mass of ethyl-2-cyanoacrylate raw material, 96.3 parts by mass of methyl ethyl ketone, and 187.5 ⁇ 10 ⁇ 6 parts by mass of anthraquinone dye was obtained. .
- the viscosity (25 ° C.) was 0.4 mPa ⁇ s.
- Comparative Example 8 A uniform solution (composition for latent fingerprint detection) consisting of 3.7 parts by mass of ethyl-2-cyanoacrylate raw material, 96.3 parts by mass of benzene, and 187.5 ⁇ 10 ⁇ 6 parts by mass of anthraquinone dye was obtained. .
- the viscosity (25 ° C.) was 0.65 mPa ⁇ s.
- the latent fingerprint can be accurately detected by bringing the composition for latent fingerprint detection into contact with the surface of the specimen and then irradiating it with light.
- a latent fingerprint is formed on the surface of a convex portion in a fingerprint support member having a convex portion or a concave portion on the surface, it is difficult to detect with a known composition in the past.
- erosion (disappearance) or deformation of the latent fingerprint is suppressed, and its outline is maintained, so that detection can be performed efficiently. Therefore, it is suitable for a wide specimen in the field of identification.
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Abstract
Description
本発明の課題は、指頭分泌成分を含む潜在指紋が、平坦な指紋支持部材の表面に形成されている場合だけでなく、最表面に凸部又は凹部を有する指紋支持部材における凸部の表面のみに形成されている場合であっても、潜在指紋の変形又は消失が抑制されて、潜在指紋のパターンが保持され、光照射により潜在指紋の検出を効率よく行うことができる組成物を提供することである。
即ち、本発明は、2-シアノアクリレートと、シリコーンオイルとを含有し、シリコーンオイルの含有量は、2-シアノアクリレートの含有量を100質量部とした場合に700~9000質量部である潜在指紋検出用組成物である。
本発明の潜在指紋検出用組成物は、更に、蛍光染料、安定剤等を含有することができる。
本発明においては、指頭分泌成分を含む潜在指紋が、平坦な指紋支持部材の表面に形成されている場合だけでなく、微細な凸部及び凹部が連続した表面を有する指紋支持部材(多孔質部材等)における凸部の表面のみに形成されており、例えば、潜在指紋のパターンが途切れ途切れになっている場合であっても、シリコーンオイルによる指紋支持部材の溶解、膨潤及び変質がなく、残存する潜在指紋の変形又は消失が抑制される。従って、指紋支持部材の表面形状に依存することなく、潜在指紋のパターンが保持され、潜在指紋の検出を効率よく行うことができる。
本発明の潜在指紋検出用組成物は、2-シアノアクリレートと、シリコーンオイルとを、特定の割合で含有する液体組成物である。
上記シアノアクリル酸アリールエステルとしては、フェニル-2-シアノアクリレート、ベンジル-2-シアノアクリレート等が挙げられる。
上記シアノアクリル酸アルケニルエステルとしては、アリル-2-シアノアクリレート等が挙げられる。
上記シアノアクリル酸アルキニルエステルとしては、プロパルギル-2-シアノアクリレート等が挙げられる。
上記シアノアクリル酸アルコキシアルキルエステルとしては、メトキシメチル-2-シアノアクリレート、メトキシエチル-2-シアノアクリレート、メトキシブチル-2-シアノアクリレート、エトキシエチル-2-シアノアクリレート等が挙げられる。
上記シアノアクリル酸ハロアルコキシアルキルエステルとしては、2-クロロエチル-2-シアノアクリレート、2-クロロエトキシエチル-2-シアノアクリレート、2,2,2-トリフルオロエチル-2-シアノアクリレート等が挙げられる。
鎖状化合物としては、1,1,3,3-テトラメチルジシロキサン、1,3-ジエチルテトラメチルジシロキサン、1,1,3,3-テトライソプロピルジシロキサン、ペンタメチルジシロキサン、ヘキサメチルジシロキサン、ヘキサエチルジシロキサン、ペンタメチルヘキシルジシロキサン、1,3-ジオクチルテトラメチルジシロキサン、1,1,1,5,5,5-ヘキサメチルトリシロキサン、1,1,3,3,5,5-ヘキサメチルトリシロキサン、1,1,1,3,5,5,5-ヘプタメチルトリシロキサン、オクタメチルトリシロキサン、ヘプタメチルヘキシルトリシロキサン、ヘプタメチルヘプチルトリシロキサン、ヘプタメチルオクチルトリシロキサン、1,1,3,3,5,5,7,7-オクタメチルテトラシロキサン、デカメチルテトラシロキサン、ドデカメチルペンタシロキサン、テトラデカメチルヘキサシロキサン、ヘキサデカメチルヘプタシロキサン、オクタデカメチルオクタシロキサン、エイコサメチルノナシロキサン、ドコサメチルデカシロキサン、トリス(トリメチルシロキシ)シラン、トリス(トリメチルシロキシメチル)シラン、テトラキス(トリメチルシロキシ)シラン等のアルキルシロキサン;ヘキサビニルジシロキサン、(3-グリシドキシプロピル)ペンタメチルジシロキサン、1,1,3,3-テトラエトキシ-1,3-ジメチルジシロキサン、1,3-ビス(グリシドキシプロピル)テトラメチルジシロキサン、1,3-ビス(ヒドロキシブチル)テトラメチルジシロキサン、1,3-ビス(ヒドロキシプロピル)テトラメチルジシロキサン、1,3-ビス(トリメチルシロキシ)-1,3-ジメチルジシロキサン、1,3-ジアリルテトラキス(トリメチルシロキシ)ジシロキサン、1,3-ジアリルテトラメチルジシロキサン、1,3-ジエチルテトラメチルジシロキサン、1,3-ジエチニルテトラメチルジシロキサン、1,3-ジメチルテトラメトキシジシロキサン、1,3-ジオクチルテトラメチルジシロキサン、1,3-ジビニルテトラエトキシジシロキサン、1,3-ジビニルテトラメチルジシロキサン、1-アリル-1,1,3,3-テトラメチルジシロキサン、ジビニルテトラキス(トリメチルシロキシ)ジシロキサン、トリス(トリメチルシロキシビニル)シラン、1,5-ジビニルヘキサメチルトリシロキサン、2-[メトキシ(ポリエチレンオキシ)プロピル]ヘプタメチルトリシロキサン、3-[ヒドロキシ(ポリエチレンオキシ)プロピル]ヘプタメチルトリシロキサン、3-オクチルヘプタメチルトリシロキサン等の変性アルキルシロキサン等が挙げられる。
また、環状化合物としては、ヘキサメチルシクロトリシロキサン、オクタメチルシクロテトラシロキサン、デカメチルシクロペンタシロキサン、ドデカメチルシクロヘキサシロキサン、テトラデカメチルシクロヘプタシロキサン、ヘキサデカメチルシクロオクタシロキサン、オクタデカメチルシクロノナシロキサン、エイコサメチルシクロデカシロキサン等のシクロアルキルシロキサン;ビス[(ビシクロへプテニル)エチル]テトラメチルジシロキサン、ビス-2-[3,4-(エポキシシクロヘキシル)エチル]テトラメチルジシロキサン等の変性シクロアルキルシロキサン等が挙げられる。
上記蛍光染料は、上記2-シアノアクリレートの単独重合体の粉末の中に分散させて得られた試料に、400~800nmの範囲の波長を有する電磁波(可視光線)を照射して蛍光を発するものであれば、特に限定されない。本発明においては、2-シアノアクリレートの重合体の中において安定であり、蛍光感度が高いことから、アントラキノン系染料、ナフタルイミド系染料等を用いることができる。本発明において用いられる蛍光染料は、1種のみであってよいし、2種以上の組み合わせであってもよい。
上記ナフタルイミド系染料としては、アルキルナフタルイミド、アルコキシナフタルイミド、アルコキシアルキルナフタルイミド、アミノナフタルイミド、アルキルアミノナフタルイミド、ニトロナフタルイミド、ハロゲン化ナフタルイミド、カルボニルナフタルイミド、フェニルチオナフタルイミド、シアノナフタルイミド、ヒドロキシナフタルイミド等が挙げられる。これらのうち、2-ブチル-6-(ブチルアミノ)-1H-ベンズ[de]イソキノリン-1,3(2H)-ジオン(SOLVENT YELLOW 43)等のアルキルアミノナフタルイミドが好ましい。
本発明の潜在指紋検出用組成物が安定剤を含有する場合、その含有量は、2-シアノアクリレートの含有量を100質量部とした場合に、0.0001~1質量部であり、好ましくは0.001~0.1質量部、より好ましくは0.001~0.05質量部である。
上記のように、2-シアノアクリレートの重合により形成された硬化部は、通常、白色であるため、指紋支持部材の色によっては、その色と異なる色に発光する蛍光染料を含有する潜在指紋検出用組成物を用いることが好ましい。
本発明においては、潜在指紋の検出に際して、組成物の使用量を少量とすることができるだけでなく、大面積の検体に対して好適であることから、噴霧によることが好ましい。
組成物を検体に噴霧する場合、機械式噴霧器、電気式噴霧器、ポンプ式スプレー、トリガー式スプレー、エアゾール等の噴霧器を用いることができる。尚、検体の同一表面に対する噴霧回数は、特に限定されず、2-シアノアクリレートの噴霧量が好ましくは0.000015~0.003ml/cm2の範囲となるものであればよい。尚、1回あたりの噴霧量は、好ましくは0.0005~1ml/cm2、より好ましくは0.001~0.1ml/cm2である。
また、検体を組成物に浸漬する場合、0℃~40℃の組成物において検体を静止状態として、0.1~5分間浸漬することが好ましい。
潜在指紋検出用組成物の製造に用いた原料は、以下の通りである。
安定剤として、亜硫酸ガス200質量ppm及びハイドロキノン600質量ppmを、予め、添加したエチル-2-シアノアクリレート(以下、「エチル-2-シアノアクリレート原料」という)を用いた。
1-2.蛍光染料
下記の2種の製品を精製処理に供したものを用いた。
(1)アントラキノン系染料
日本化薬社製2-フェノキシ-1-アミノ-4-ヒドロキシアントラセン-9,10-ジオン「Kayaset Red B」(商品名)
(2)ナフタルイミド系染料
日本化薬社製2-ブチル-6-(ブチルアミノ)-1H-ベンズ[de]イソキノリン-1,3(2H)-ジオン「Kayaset Flavine FG」(商品名)
<精製方法>
蛍光染料5gを、撹拌下の1質量%メタンスルホン酸のメタノール溶液50gに、徐々に添加して、添加完了後、更に5分間撹拌を継続した。次いで、濾別して、50℃で24時間減圧乾燥した。
(1)ヘキサメチルジシロキサン(1気圧における沸点:100℃)
(2)デカメチルテトラシロキサン(1気圧における沸点:194℃)
(3)デカメチルシクロペンタシロキサン(1気圧における沸点:210℃)
1-4.安定剤
亜硫酸ガス及びハイドロキノンを用いた。
1-5.有機溶剤
比較例のために、シリコーンオイルに代えて、アセトン、メチルエチルケトン、ベンゼン、ヘキサン又はクロロホルムを用いた。
上記の各原料を分割混合して、25℃で撹拌することにより、潜在指紋検出用組成物を製造した。得られた組成物の粘度を、JIS K 6833-1 5.4.1 b)方法2に準ずる方法により、温度25℃で測定した。
そして、市販のレンガの表面、市販のポリエチレン製袋の表面、及び、磁気切符の裏面(磁気面)に、手洗い後の指の腹を押し当てたものを検体とし、その表面全体に組成物を噴霧し、光照射により潜在指紋の検出が可能かどうかを調べた。
実施例1
エチル-2-シアノアクリレート原料3.7質量部と、ヘキサメチルジシロキサン96.3質量部と、アントラキノン系染料281.3×10-6質量部とからなる均一溶液(潜在指紋検出用組成物)を得た。粘度(25℃)は、0.65mPa・sであった。
次に、得られた潜在指紋検出用組成物を、その表面に潜在指紋を有するレンガ(図1)に噴霧(噴霧量0.01~0.02ml/cm2)した。これにより、組成物が指頭分泌成分に接触すると、エチル-2-シアノアクリレートの硬化による白色化が観察された。その後、噴霧した組成物を乾燥させ、Horiba Scientific社製犯罪捜査用光源装置「CRIMESCOPE CS-16-500」(商品名)により、白色固化部に波長415~575nmの光を照射したところ、図2に示すように、潜在指紋の鮮明な発光を観察することができた。これらの結果を表1に示す。
エチル-2-シアノアクリレート原料5.5質量部と、ヘキサメチルジシロキサン94.5質量部と、アントラキノン系染料368.1×10-6質量部とからなる均一溶液(潜在指紋検出用組成物)を得た。粘度(25℃)は、0.65mPa・sであった。
その後、実施例1と同様の操作を行い、光照射により、潜在指紋の鮮明な発光を観察することができた。これらの結果を表1に示す。
エチル-2-シアノアクリレート原料5.5質量部と、ヘキサメチルジシロキサン94.5質量部と、アントラキノン系染料36.8×10-6質量部とからなる均一溶液(潜在指紋検出用組成物)を得た。粘度(25℃)は、0.65mPa・sであった。
その後、実施例1と同様の噴霧を7回行った後、光照射することにより、潜在指紋の鮮明な発光を観察することができた。これらの結果を表1に示すが、組成物の噴霧を複数回に渡って行った後、潜在指紋を検出したことから、判定を「△」とした。
エチル-2-シアノアクリレート原料3.7質量部と、オクタメチルトリシロキサン96.3質量部と、アントラキノン系染料281.3×10-6質量部とからなる均一溶液(潜在指紋検出用組成物)を得た。粘度(25℃)は、1.0mPa・sであった。
その後、実施例1と同様の操作を行い、光照射により、潜在指紋の鮮明な発光を観察することができた。これらの結果を表1に示す。
エチル-2-シアノアクリレート原料5.5質量部と、オクタメチルトリシロキサン94.5質量部と、アントラキノン系染料368.1×10-6質量部とからなる均一溶液(潜在指紋検出用組成物)を得た。粘度(25℃)は、1.0mPa・sであった。
その後、実施例1と同様の操作を行い、光照射により、潜在指紋の鮮明な発光を観察することができた。これらの結果を表1に示す。
エチル-2-シアノアクリレート原料5.5質量部と、デカメチルテトラシロキサン94.5質量部と、アントラキノン系染料368.1×10-6質量部とからなる均一溶液(潜在指紋検出用組成物)を得た。粘度(25℃)は、1.5mPa・sであった。
その後、実施例1と同様の操作を行い、光照射により、潜在指紋の鮮明な発光を観察することができた。これらの結果を表1に示す。
エチル-2-シアノアクリレート原料5.5質量部と、デカメチルシクロペンタシロキサン94.5質量部と、アントラキノン系染料368.1×10-6質量部とからなる均一溶液(潜在指紋検出用組成物)を得た。粘度(25℃)は、4.0mPa・sであった。
その後、実施例1と同様の操作を行い、光照射により、潜在指紋の鮮明な発光を観察することができた。これらの結果を表1に示す。
エチル-2-シアノアクリレート原料3.7質量部と、ヘキサメチルジシロキサン96.3質量部と、ナフタルイミド系染料140.6×10-6質量部とからなる均一溶液(潜在指紋検出用組成物)を得た。粘度(25℃)は、0.65mPa・sであった。
その後、実施例1と同様の操作を行い、光照射により、潜在指紋の鮮明な発光を観察することができた。これらの結果を表1に示す。
エチル-2-シアノアクリレート原料5.5質量部と、ヘキサメチルジシロキサン94.5質量部と、ナフタルイミド系染料184.0×10-6質量部とからなる均一溶液(潜在指紋検出用組成物)を得た。粘度(25℃)は、0.65mPa・sであった。
その後、実施例1と同様の操作を行い、光照射により、潜在指紋の鮮明な発光を観察することができた。これらの結果を表1に示す。
エチル-2-シアノアクリレート原料5.5質量部と、ヘキサメチルジシロキサン94.5質量部と、ナフタルイミド系染料18.4×10-6質量部とからなる均一溶液(潜在指紋検出用組成物)を得た。粘度(25℃)は、0.65mPa・sであった。
その後、実施例1と同様の噴霧を5回行った後、光照射することにより、潜在指紋の鮮明な発光を観察することができた。これらの結果を表1に示すが、組成物の噴霧を複数回に渡って行った後、潜在指紋を検出したことから、判定を「△」とした。
エチル-2-シアノアクリレート原料3.7質量部と、オクタメチルトリシロキサン96.3質量部と、ナフタルイミド系染料140.6×10-6質量部とからなる均一溶液(潜在指紋検出用組成物)を得た。粘度(25℃)は、1.0mPa・sであった。
その後、実施例1と同様の操作を行い、光照射により、潜在指紋の鮮明な発光を観察することができた。これらの結果を表1に示す。
エチル-2-シアノアクリレート原料5.5質量部と、オクタメチルトリシロキサン94.5質量部と、ナフタルイミド系染料184.0×10-6質量部とからなる均一溶液(潜在指紋検出用組成物)を得た。粘度(25℃)は、1.0mPa・sであった。
その後、実施例1と同様の操作を行い、光照射により、潜在指紋の鮮明な発光を観察することができた。これらの結果を表1に示す。
エチル-2-シアノアクリレート原料5.5質量部と、アセトン94.5質量部と、アントラキノン系染料368.1×10-6質量部とからなる均一溶液(潜在指紋検出用組成物)を得た。粘度(25℃)は、0.34mPa・sであった。
その後、実施例1と同様の操作を行い、光照射により、発光が観察されず、潜在指紋を検出することができなかった。これらの結果を表1に示す。
エチル-2-シアノアクリレート原料5.5質量部と、メチルエチルケトン94.5質量部と、アントラキノン系染料368.1×10-6質量部とからなる均一溶液(潜在指紋検出用組成物)を得た。粘度(25℃)は、0.4mPa・sであった。
その後、実施例1と同様の操作を行い、光照射により、発光が観察されず、潜在指紋を検出することができなかった。これらの結果を表1に示す。
エチル-2-シアノアクリレート原料5.5質量部と、ベンゼン94.5質量部と、アントラキノン系染料368.1×10-6質量部とからなる均一溶液(潜在指紋検出用組成物)を得た。粘度(25℃)は、0.65mPa・sであった。
その後、実施例1と同様の操作を行い、光照射により、発光が観察されず、潜在指紋を検出することができなかった。これらの結果を表1に示す。
エチル-2-シアノアクリレート原料5.5質量部と、ヘキサン94.5質量部と、アントラキノン系染料368.1×10-6質量部とからなる均一溶液(潜在指紋検出用組成物)を得た。粘度(25℃)は、0.33mPa・sであった。
その後、実施例1と同様の操作を行い、光照射により、発光が観察されず、潜在指紋を検出することができなかった。これらの結果を表1に示す。
エチル-2-シアノアクリレート原料5.5質量部と、クロロホルム94.5質量部と、アントラキノン系染料368.1×10-6質量部とからなる均一溶液(潜在指紋検出用組成物)を得た。粘度(25℃)は、0.57mPa・sであった。
その後、実施例1と同様の操作を行い、光照射により、発光が観察されず、潜在指紋を検出することができなかった。これらの結果を表1に示す。
実施例13
エチル-2-シアノアクリレート原料2.3質量部と、ヘキサメチルジシロキサン97.7質量部と、アントラキノン系染料133.2×10-6質量部とからなる均一溶液(潜在指紋検出用組成物)を得た。粘度(25℃)は、0.65mPa・sであった。
次に、得られた潜在指紋検出用組成物を、その表面に潜在指紋を有する磁気切符の磁気面(図3)及びポリエチレン製袋(図5)の表面に噴霧(噴霧量0.01~0.02ml/cm2)した。これにより、組成物が指頭分泌成分に接触すると、エチル-2-シアノアクリレートの硬化による白色化が観察された。その後、噴霧した組成物を乾燥させ、Horiba Scientific社製犯罪捜査用光源装置「CRIMESCOPE CS-16-500」(商品名)により、白色固化部に波長415~575nmの光を照射したところ、図4及び図6に示すように、潜在指紋の鮮明な発光を観察することができた。これらの結果を表2に示す。
エチル-2-シアノアクリレート原料3.7質量部と、ヘキサメチルジシロキサン96.3質量部と、アントラキノン系染料187.5×10-6質量部とからなる均一溶液(潜在指紋検出用組成物)を得た。粘度(25℃)は、0.65mPa・sであった。
その後、その表面に潜在指紋を有するポリエチレン製袋に対して、実施例13と同様の操作を行い、光照射により、潜在指紋の鮮明な発光を観察することができた。これらの結果を表2に示す。
エチル-2-シアノアクリレート原料3.7質量部と、ヘキサメチルジシロキサン96.3質量部と、アントラキノン系染料18.8×10-6質量部とからなる均一溶液(潜在指紋検出用組成物)を得た。粘度(25℃)は、0.65mPa・sであった。
その後、その表面に潜在指紋を有するポリエチレン製袋に対して、実施例13と同様の噴霧を3回行った後、光照射することにより、潜在指紋の鮮明な発光を観察することができた。これらの結果を表2に示すが、組成物の噴霧を複数回に渡って行った後、潜在指紋を検出したことから、判定を「△」とした。
エチル-2-シアノアクリレート原料2.3質量部と、オクタメチルトリシロキサン97.7質量部と、アントラキノン系染料133.2×10-6質量部とからなる均一溶液(潜在指紋検出用組成物)を得た。粘度(25℃)は、1.0mPa・sであった。
その後、その表面に潜在指紋を有するポリエチレン製袋に対して、実施例13と同様の操作を行い、光照射により、潜在指紋の鮮明な発光を観察することができた。これらの結果を表2に示す。
エチル-2-シアノアクリレート原料3.7質量部と、オクタメチルトリシロキサン96.3質量部と、アントラキノン系染料187.5×10-6質量部とからなる均一溶液(潜在指紋検出用組成物)を得た。粘度(25℃)は、1.0mPa・sであった。
その後、その表面に潜在指紋を有するポリエチレン製袋に対して、実施例13と同様の操作を行い、光照射により、潜在指紋の鮮明な発光を観察することができた。これらの結果を表2に示す。
エチル-2-シアノアクリレート原料3.7質量部と、デカメチルテトラシロキサン96.3質量部と、アントラキノン系染料187.5×10-6質量部とからなる均一溶液(潜在指紋検出用組成物)を得た。粘度(25℃)は、1.5mPa・sであった。
その後、その表面に潜在指紋を有するポリエチレン製袋に対して、実施例13と同様の操作を行い、光照射により、潜在指紋の鮮明な発光を観察することができた。これらの結果を表2に示す。
エチル-2-シアノアクリレート原料3.7質量部と、デカメチルシクロペンタシロキサン96.3質量部と、アントラキノン系染料187.5×10-6質量部とからなる均一溶液(潜在指紋検出用組成物)を得た。粘度(25℃)は、4.0mPa・sであった。
その後、その表面に潜在指紋を有するポリエチレン製袋に対して、実施例13と同様の操作を行い、光照射により、潜在指紋の鮮明な発光を観察することができた。これらの結果を表2に示す。
エチル-2-シアノアクリレート原料2.3質量部と、ヘキサメチルジシロキサン97.7質量部と、ナフタルイミド系染料66.6×10-6質量部とからなる均一溶液(潜在指紋検出用組成物)を得た。粘度(25℃)は、0.65mPa・sであった。
その後、その表面に潜在指紋を有するポリエチレン製袋に対して、実施例13と同様の操作を行い、光照射により、潜在指紋の鮮明な発光を観察することができた。これらの結果を表2に示す。
エチル-2-シアノアクリレート原料3.7質量部と、ヘキサメチルジシロキサン96.3質量部と、ナフタルイミド系染料93.8×10-6質量部とからなる均一溶液(潜在指紋検出用組成物)を得た。粘度(25℃)は、0.65mPa・sであった。
その後、その表面に潜在指紋を有するポリエチレン製袋に対して、実施例13と同様の操作を行い、光照射により、潜在指紋の鮮明な発光を観察することができた。これらの結果を表2に示す。
エチル-2-シアノアクリレート原料3.7質量部と、ヘキサメチルジシロキサン96.3質量部と、ナフタルイミド系染料9.4×10-6質量部とからなる均一溶液(潜在指紋検出用組成物)を得た。粘度(25℃)は、0.65mPa・sであった。
その後、その表面に潜在指紋を有するポリエチレン製袋に対して、実施例13と同様の噴霧を5回行った後、光照射することにより、潜在指紋の鮮明な発光を観察することができた。これらの結果を表2に示すが、組成物の噴霧を複数回に渡って行った後、潜在指紋を検出したことから、判定を「△」とした。
エチル-2-シアノアクリレート原料2.3質量部と、オクタメチルトリシロキサン97.7質量部と、ナフタルイミド系染料66.6×10-6質量部とからなる均一溶液(潜在指紋検出用組成物)を得た。粘度(25℃)は、1.0mPa・sであった。
その後、その表面に潜在指紋を有するポリエチレン製袋に対して、実施例13と同様の操作を行い、光照射により、潜在指紋の鮮明な発光を観察することができた。これらの結果を表2に示す。
エチル-2-シアノアクリレート原料3.7質量部と、オクタメチルトリシロキサン96.3質量部と、ナフタルイミド系染料93.8×10-6質量部とからなる均一溶液(潜在指紋検出用組成物)を得た。粘度(25℃)は、1.0mPa・sであった。
その後、その表面に潜在指紋を有するポリエチレン製袋に対して、実施例13と同様の操作を行い、光照射により、潜在指紋の鮮明な発光を観察することができた。これらの結果を表2に示す。
エチル-2-シアノアクリレート原料3.7質量部と、アセトン96.3質量部と、アントラキノン系染料187.5×10-6質量部とからなる均一溶液(潜在指紋検出用組成物)を得た。粘度(25℃)は、0.34mPa・sであった。
その後、その表面に潜在指紋を有するポリエチレン製袋に対して、実施例13と同様の操作を行い、光照射により、発光が観察されず、潜在指紋を検出することができなかった。これらの結果を表2に示す。
エチル-2-シアノアクリレート原料3.7質量部と、メチルエチルケトン96.3質量部と、アントラキノン系染料187.5×10-6質量部とからなる均一溶液(潜在指紋検出用組成物)を得た。粘度(25℃)は、0.4mPa・sであった。
その後、その表面に潜在指紋を有するポリエチレン製袋に対して、実施例13と同様の操作を行い、光照射により、発光が観察されず、潜在指紋を検出することができなかった。これらの結果を表2に示す。
エチル-2-シアノアクリレート原料3.7質量部と、ベンゼン96.3質量部と、アントラキノン系染料187.5×10-6質量部とからなる均一溶液(潜在指紋検出用組成物)を得た。粘度(25℃)は、0.65mPa・sであった。
その後、その表面に潜在指紋を有するポリエチレン製袋に対して、実施例13と同様の操作を行い、光照射により、発光が観察されず、潜在指紋を検出することができなかった。これらの結果を表2に示す。
Claims (6)
- 2-シアノアクリレートと、シリコーンオイルとを含有し、前記シリコーンオイルの含有量は、前記2-シアノアクリレートの含有量を100質量部とした場合に700~9000質量部であることを特徴とする潜在指紋検出用組成物。
- 前記シリコーンオイルが、ケイ素原子数が2~5のアルキルシロキサンである請求項1に記載の潜在指紋検出用組成物。
- 更に、蛍光染料を含有する請求項1に記載の潜在指紋検出用組成物。
- 前記蛍光染料が、アントラキノン系染料及びナフタルイミド系染料から選ばれた少なくとも1種である請求項3に記載の潜在指紋検出用組成物。
- 更に、安定剤を含有する請求項1に記載の潜在指紋検出用組成物。
- 前記安定剤が、亜硫酸ガス、メタンスルホン酸、エタンスルホン酸、HBF4、BF3エーテル錯塩、BF3酢酸錯塩、ハイドロキノン、ハイドロキノンモノメチルエーテル、2,6-ジ-tert-ブチル-p-クレゾール、トリフルオロメタンスルホン酸及び二硫化炭素から選ばれた少なくとも1種である請求項5に記載の潜在指紋検出用組成物。
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CN201680043083.XA CN107847188B (zh) | 2015-07-29 | 2016-07-25 | 潜在指纹检测用组合物 |
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US4477607A (en) * | 1983-08-31 | 1984-10-16 | Loctite Corporation | Thixotropic cyanoacrylate compositions |
JPS61288836A (ja) * | 1985-06-17 | 1986-12-19 | 田岡化学工業株式会社 | 指紋の検出方法 |
US4837260A (en) * | 1986-05-23 | 1989-06-06 | Toagosei Chemical Industry Co., Ltd. | Cyanoacrylate compositions |
JPH0415004A (ja) * | 1990-05-07 | 1992-01-20 | Matsushita Electric Ind Co Ltd | 毛髪乾燥機 |
JPH06165771A (ja) * | 1992-09-10 | 1994-06-14 | Toagosei Chem Ind Co Ltd | 指紋検出液および指紋検出方法 |
IL109155A0 (en) * | 1993-05-11 | 1994-06-24 | Minnesota Mining & Mfg | Fluorescent dye/cyanoacrylate compositions useful in latent fingerprint development kit |
US5902443A (en) * | 1997-01-28 | 1999-05-11 | Toagosei America, Inc. | Method for bonding with cyanoacrylate adhesive |
US6183593B1 (en) * | 1999-12-23 | 2001-02-06 | Closure Medical Corporation | 1,1-disubstituted ethylene adhesive compositions containing polydimethylsiloxane |
CA2619886C (en) * | 2005-08-17 | 2016-01-19 | Ann Beal Salamone | Conformable solvent-based bandage and coating material |
JP5051134B2 (ja) * | 2006-10-06 | 2012-10-17 | 東亞合成株式会社 | 指紋検出用重合体、その製造方法及び指紋検出用組成物、並びにこれらを用いた指紋検出方法 |
GB2522152B (en) * | 2012-10-25 | 2018-05-23 | Earth Chemical Co | Latent fingerprint detection method, thermal evaporation device for latent fingerprint detection, latent fingerprint device, and composition |
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JPS63108010A (ja) * | 1986-05-23 | 1988-05-12 | Toagosei Chem Ind Co Ltd | シアノアクリレ−ト系組成物 |
JPS63275609A (ja) * | 1987-05-07 | 1988-11-14 | Toagosei Chem Ind Co Ltd | シアノアクリレ−ト系組成物 |
JPH0415044A (ja) * | 1990-05-09 | 1992-01-20 | Badlands Trust Org | 検証のために物体に標識を付ける方法 |
JP2010213837A (ja) * | 2009-03-16 | 2010-09-30 | Sky Science Co Ltd | 指紋検出方法 |
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TWI682953B (zh) | 2020-01-21 |
EP3329846B1 (en) | 2021-07-14 |
EP3329846A4 (en) | 2019-03-06 |
US20180368740A1 (en) | 2018-12-27 |
KR20180030910A (ko) | 2018-03-26 |
EP3329846A1 (en) | 2018-06-06 |
JP6525056B2 (ja) | 2019-06-05 |
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