WO2016111108A1 - Procédé antisalissures de surface de structure et ruban adhésif d'étanchéité - Google Patents

Procédé antisalissures de surface de structure et ruban adhésif d'étanchéité Download PDF

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Publication number
WO2016111108A1
WO2016111108A1 PCT/JP2015/084243 JP2015084243W WO2016111108A1 WO 2016111108 A1 WO2016111108 A1 WO 2016111108A1 JP 2015084243 W JP2015084243 W JP 2015084243W WO 2016111108 A1 WO2016111108 A1 WO 2016111108A1
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WIPO (PCT)
Prior art keywords
antifouling
layer
adhesive tape
sensitive adhesive
pressure
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PCT/JP2015/084243
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English (en)
Japanese (ja)
Inventor
鈴木　聡
太樹 末吉
内藤　友也
修 林
量子 浅井
平松　剛
倉田　直記
昌嗣 東
井上　徹雄
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日東電工株式会社
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Publication of WO2016111108A1 publication Critical patent/WO2016111108A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B59/00—Hull protection specially adapted for vessels; Cleaning devices specially adapted for vessels
    • B63B59/04—Preventing hull fouling
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J183/00—Adhesives based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Adhesives based on derivatives of such polymers
    • C09J183/04—Polysiloxanes
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J5/00—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B1/00—Equipment or apparatus for, or methods of, general hydraulic engineering, e.g. protection of constructions against ice-strains
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/24—Safety or protective measures preventing damage to building parts or finishing work during construction
    • E04G21/30—Safety or protective measures preventing damage to building parts or finishing work during construction against mechanical damage or dirt, e.g. guard covers of stairs

Definitions

  • the present invention relates to an antifouling method for a structure surface.
  • the present invention specifically includes, for example, aquatic organisms in underwater structures (such as ships, buoys, port facilities, offshore oilfield facilities, power plant cooling water channels, factory cooling water channels, water floating channels, etc.).
  • the present invention relates to an antifouling method for the surface of a structure for preventing adhesion and propagation.
  • this invention relates to the adhesive tape for sealing which can be preferably used for the antifouling method of the structure surface as mentioned above.
  • Underwater structures such as ships are in contact with seawater, and aquatic organisms such as barnacles, oysters, mussels, hydra, cell plastics, squirts, bryozoans, Aosa, Aonori, and attached diatoms grow and increase fluid resistance. It causes unfavorable conditions such as deterioration of machine performance such as deterioration of thermal conductivity and diffusion of attached aquatic organisms overseas. In addition, the work for removing the attached aquatic organisms requires a large amount of labor and enormous time, and suffers an economic loss.
  • antifouling paint In order to prevent such damage, antifouling paint has been conventionally applied to underwater structures. Antifouling paints have long contained toxic antifouling agents such as organotin compounds and now cuprous oxide. Adhesive growth of aquatic organisms can be almost suppressed by the toxicity of antifouling paints, but toxic antifouling agents such as organotin compounds and cuprous oxide have a considerable adverse effect on the human body and the environment. It becomes. Further, when the antifouling paint is dried after being applied, about 30% by weight of the organic solvent (VOC) is volatilized, which adversely affects the work environment and the surrounding environment. In spray painting, it is said that 10 to 20% by weight of the paint is scattered by the wind in addition to VOC emission into the atmosphere.
  • VOC organic solvent
  • antifouling paints so far have an adhesion inhibiting effect on aquatic organisms, but have a great adverse effect on the human body and the environment, and the current situation is that many problems have not been solved. .
  • an antifouling tape composed of two layers of silicone rubber and an adhesive
  • the silicone rubber layer responsible for the antifouling effect does not contain an antifouling agent such as oil, and is a silicone rubber itself.
  • the adhesion of aquatic organisms can be suppressed by its water repellency in the short term, but the antifouling effect cannot be sustained in the long term.
  • an antifouling tape is composed of two layers of silicone rubber and an adhesive, there is a great concern about strength.
  • silicone rubber has a very low strength at break, and therefore, when such an antifouling tape is peeled off after use, it is difficult to peel off as a tape state, which is not practical.
  • Patent Document 4 a sheet-like tape has been proposed in which a silicone elastomer is provided on a base material via a primer and an adhesive layer is provided on the opposite side of the base material (see Patent Document 4).
  • a silicone elastomer is provided on a base material via a primer and an adhesive layer is provided on the opposite side of the base material.
  • Patent Document 4 since there is no description about the use in water in patent document 4, when considering the use as an aquatic organism adhesion prevention adhesive tape, it is not realistic.
  • strength design is required so that the base material does not break in the middle, Patent Document 4 does not have such description at all, so that it is not realistic in considering use as an aquatic organism adhesion preventing adhesive tape.
  • Patent Document 5 an aquatic organism adhesion preventing adhesive tape having an antifouling layer on its surface has been reported.
  • a plurality of sheet-like aquatic organism adhesion preventing adhesive tapes are used for the antifouling property of the structure surface. Is laid down where required.
  • a boundary line or a gap is formed by the ends of adjacent aquatic organism adhesion preventing adhesive tapes. If such a boundary line or a gap exists, water such as seawater enters from there, causing a problem that the aquatic organism adhesion preventing adhesive tape is peeled off.
  • the gap portion has no antifouling property, when the gap portion exists, there is a problem that aquatic organisms easily adhere to the periphery.
  • a so-called touch-up operation in which a sealant or paint is applied to the boundary line or the gap portion to cover the boundary line or the gap portion can be considered.
  • the touch-up operation is an application operation by an operator, there is a problem that depending on the number and length of boundary lines and gaps, the operation is very burdensome for the operator.
  • the operation accuracy of accurately covering the boundary line and the gap portion without unevenness is lowered.
  • it is a sealant or paint application operation there is a problem of contamination during operation in which the application material is scattered during the operation.
  • An object of the present invention is to provide an antifouling method for a surface of a structure that can reduce a work load, increase work accuracy, reduce contamination during work, and exhibit excellent antifouling properties. Moreover, it is providing the adhesive tape for sealing which can be preferably used for the antifouling method of the surface of such a structure.
  • the antifouling method of the structure surface of the present invention is A method of imparting antifouling property to at least a part of the structure surface by spreading a plurality of sheets having the antifouling layer (A1) on at least a part of the structure surface, A pressure-sensitive adhesive tape including an antifouling layer (A2) and a pressure-sensitive adhesive layer (B) is applied so as to cover the ends of the adjacent sheets.
  • the pressure-sensitive adhesive layer (B) contains a silicone resin-based pressure-sensitive adhesive.
  • the antifouling layer (A2) contains a silicone resin.
  • the antifouling layer (A2) contains an antifouling agent.
  • the antifouling agent contains silicone oil.
  • a base material layer (C) is provided between the antifouling layer (A2) and the pressure-sensitive adhesive layer (B).
  • the sealing adhesive tape of the present invention is An adhesive tape for covering edges of adjacent sheets having an antifouling layer (A1) on the surface, An antifouling layer (A2) and an adhesive layer (B) are included.
  • the present invention it is possible to provide a structure surface antifouling method that can reduce the work load, increase the work accuracy, reduce contamination during work, and exhibit excellent antifouling properties.
  • the adhesive tape for sealing which can be preferably used for the antifouling method of such a structure surface can be provided.
  • the antifouling method for a structure surface according to the present invention provides antifouling property to at least a part of the structure surface by spreading a plurality of sheets having an antifouling layer (A1) on the surface of the structure. It is a method of granting.
  • the antifouling method for a structure surface according to the present invention applies a work load by applying an adhesive tape including an antifouling layer (A2) and an adhesive layer (B) so as to cover such boundary lines and gaps. Can be reduced, work accuracy can be increased, contamination during work can be reduced, and excellent antifouling properties can be exhibited.
  • any appropriate structure can be adopted as long as it is required to impart antifouling properties.
  • a structure for example, preferably, an underwater structure that aquatic organisms adhere and easily propagate is mentioned.
  • any appropriate sheet can be adopted as long as it can impart antifouling properties to the structure.
  • a sheet comprising an antifouling layer (A1) and an adhesive layer
  • a sheet comprising an antifouling layer (A1), a base material layer and an adhesive layer.
  • FIG. 1 and 2 are schematic views showing an example of the antifouling method for the surface of a structure of the present invention
  • FIG. 1 is a side view showing a state where a sheet and an adhesive tape are attached to a ship
  • FIG. It is an expanded sectional view of the pasting state shown in FIG.
  • the long sheets 10, 10, 10,... are continuously bonded to the surface of the ship 100 so that their longitudinal directions are substantially parallel.
  • the adjacent sheets 10 and 10 may be bonded so that the right end surface 11 of the sheet 10 and the left end surface 12 of the sheet 10 are adjacent to each other, or FIG.
  • the right end portion 10a of the sheet 10 may be bonded so that the left end portion 10b of the adjacent sheet 10 overlaps.
  • the clearance gap part 10c may be formed between the sheet
  • an adhesive tape is further applied to the ship surface.
  • the adhesive tape 20 is attached so as to cover the end portions 10a and 10b of the adjacent sheets 10 and 10.
  • the long adhesive tape 20 is attached so that the longitudinal direction thereof is aligned with the longitudinal direction of the sheet 10.
  • the width of the adhesive tape 20 is preferably 10% to 20% with respect to the width of the sheet 10.
  • the width of the sheet 10 is, for example, 100 mm to 3000 mm.
  • the width of the adhesive tape 20 is, for example, 10 mm to 600 mm.
  • the pressure-sensitive adhesive tape including the antifouling layer (A2) and the pressure-sensitive adhesive layer (B) is preferably the pressure-sensitive adhesive tape for sealing of the present invention described below. ⁇ Sealing adhesive tape ⁇
  • the sealing pressure-sensitive adhesive tape of the present invention is a pressure-sensitive adhesive tape for covering edges of adjacent sheets having an antifouling layer (A1) on the surface.
  • the sealing adhesive tape of the present invention includes an antifouling layer (A2) and an adhesive layer (B).
  • the thickness of the pressure-sensitive adhesive tape for sealing of the present invention is set to any appropriate thickness as long as the effects of the present invention are not impaired by the thickness of each layer included in the adhesive tape.
  • the thickness of the adhesive tape is preferably 10 ⁇ m to 2000 ⁇ m, more preferably 50 ⁇ m to 800 ⁇ m, and still more preferably 100 ⁇ m to 500 ⁇ m.
  • the sealing pressure-sensitive adhesive tape of the present invention may have any appropriate other layer as long as the antifouling layer (A1) and the pressure-sensitive adhesive layer are included, as long as the effects of the present invention are not impaired. .
  • the adhesive tape preferably has a base material layer between the antifouling layer (A1) and the adhesive layer.
  • FIG. 3 shows a schematic cross-sectional view of an example of the pressure-sensitive adhesive tape for sealing of the present invention.
  • the adhesive tape 20 for sealing of this invention contains the antifouling layer (A1) 2 and the adhesive layer 3 in this order.
  • the release film 1 may be provided on the surface of the antifouling layer (A1) 2 or the surface of the pressure-sensitive adhesive layer 3.
  • the antifouling layer (A1) 2 and the pressure-sensitive adhesive layer 3 are preferably laminated directly in this order.
  • FIG. 4 shows a schematic sectional view of an example of the pressure-sensitive adhesive tape for sealing of the present invention.
  • the adhesive tape 20 for sealing of this invention contains the antifouling layer (A1) 2, the base material layer 4, and the adhesive layer 3 in this order.
  • the release film 1 may be provided on the surface of the antifouling layer (A1) 2 or the surface of the pressure-sensitive adhesive layer 3.
  • the antifouling layer (A1) 2, the base material layer 4, and the pressure-sensitive adhesive layer 3 are preferably laminated directly in this order.
  • the antifouling layer (A1) preferably contains a silicone resin.
  • Arbitrary appropriate content rates can be employ
  • the content of the silicone resin in the antifouling layer (A1) is preferably 30% to 98% by weight, more preferably 40% to 97% by weight, and further preferably 45% to 96% by weight. Particularly preferred is 50 to 95% by weight.
  • any appropriate silicone resin can be adopted as long as the effects of the present invention are not impaired. Only one type of silicone resin may be used, or two or more types may be used. Such a silicone resin may be a silicone resin that is liquid at normal temperature, or may be a silicone resin that is solid at normal temperature. Such a silicone resin may be a condensation type silicone resin or an addition type silicone resin. Further, as such a silicone resin, a one-component silicone resin (for example, a one-component room temperature curable (RTV) resin) that is dried alone may be used, or a two-component silicone resin (for example, It may be a two-component room temperature curable (RTV) resin).
  • RTV room temperature curable
  • silicone resin examples include one-component RTV rubbers manufactured by Shin-Etsu Chemical Co., Ltd. (for example, KE-3423, KE-347, KE-3475, KE-3495, KE-4895, KE- 4896, KE-1830, KE-1884, KE-3479, KE-348, KE-4897, KE-4898, KE-1820, KE-1825, KE-1831, KE-1833, KE-1885, KE-1056, KE-1151, KE-1842, KE-1886, KE-3424G, KE-3494, KE-3490, KE-40RTV, KE-4890, KE-3497, KE-3498, KE-3466, KE-3466, KE- 3467, KE-1862, KE-1867, KE-3491, KE-3492, KE-341 KE-3418, KE-3427, KE-3428, KE-41
  • Two-component RTV rubber for example, KE-1800T-A / B, KE-66, KE-1031-A / B, KE-200, KE-118, KE-103, KE-108, KE-119, KE -109E-A / B, KE-1051J-A / B, KE-1012-A / B, KE-106, KE-1282-A / B, KE-1283-A / B, KE-1800-A / B / C, KE-1801-A / B / C, KE-1802-A / B / C, KE-1281-A / B, KE-1204-A / B, KE-1204-AL / BL, KE-1280 -A / B, KE-513-A / , KE-521-A / B, KE-1285-A / B, KE-1861-A / B, KE-12, KE-14, KE-17, KE
  • KEG-2000-40A / B KEG-2000-50A / B, KEG-2000-60A / B, KEG-2000-70A / B, KEG-2001-40A / B, KEG-2001-50A / B, KE-1950-10A B, KE-1950-20A / B, KE-1950-30A / B, KE-1950-35A / B, KE-1950-40A / B, KE-1950-50A / B, KE-1950-60A / B, KE-1950-70A / B, KE-1935A / B, KE-1987A / B, KE-1988A / B, KE-2019-40A / B, KE-2019-50A / B, KE-2019-60A / B, KE-2017-30A / B, KE-2017-40A / B, KE-2017-50A / B, KE-2090-40A / B, KE-2090-50A / B, KE-2090-50A
  • the silicone resin is particularly preferably a two-component heat addition type silicone resin.
  • two-component RTV rubber manufactured by Shin-Etsu Chemical Co., Ltd., LIMS (liquid silicone manufactured by Shin-Etsu Chemical Co., Ltd.) Rubber injection molding system
  • LR7665 series manufactured by Asahi Kasei Wacker Silicone Co., Ltd.
  • LR3033 series manufactured by Asahi Kasei Wacker Silicone Co., Ltd.
  • TSE3032 series manufactured by Momentive Co., Ltd. and the like.
  • KE-1950-10 A / B
  • KE-1950-20 A / B
  • KE-1950-30 A / B
  • KE-1950-35 manufactured by Chemical Industry Co., Ltd.
  • KE-1950-40 (A / B), KE-1950-50 (A / B), KE-1950-60 (A / B), KE-1950-70 (A / B) ), KE-1987 (A / B), KE-1988 (A / B), Wacker Asahikasei Silicone Co., Ltd. LR7665 series, LR3033 series, and the like TSE3032 series manufactured by Momentive Corporation.
  • the silicone resin is preferably a silicone resin having physical properties such that the resin surface is elastically deformed by water pressure at the time of removing with water.
  • a silicone resin has a 100% modulus (tensile stress) of the silicone resin of preferably 0.1 MPa to 10 MPa, more preferably 0.1 MPa to 6 MPa.
  • Such silicone resin is preferably soluble in an organic solvent.
  • the antifouling layer preferably contains an antifouling agent.
  • the sealing adhesive tape of the present invention preferably contains silicone oil as an antifouling agent.
  • the silicone oil preferably has no reactivity with the silicone resin or self-condensation.
  • silicone oil those that are incompatible to some extent with the organopolysiloxane contained in the silicone resin are preferable, and those that can maintain the antifouling effect for a long period of time are preferable.
  • examples of such silicone oil include terminal hydroxyl group-containing dimethyl silicone oil, dimethyl silicone oil, phenylmethyl silicone oil, higher fatty acid ester-based silicone oil, and the like.
  • the viscosity at 25 ° C. of the silicone oil is preferably 10 centistokes to 10000 centistokes, more preferably 50 centistokes to 5000 centistokes, still more preferably 80 centistokes to 1000 centistokes, and particularly preferably. Is between 100 centistokes and 500 centistokes.
  • the silicone oil is preferably a silicone oil represented by the general formula (I).
  • R 1 is the same or different and represents an alkyl group having 1 to 10 carbon atoms, an aryl group, an aralkyl group, a fluoroalkyl group, a polyether group, or a hydroxyl group
  • R 2 is the same or Differently, it represents an alkyl group having 1 to 10 carbon atoms, an aryl group, an aralkyl group, a polyether group or a fluoroalkyl group
  • n represents an integer of 0 to 150.
  • R 1 in the general formula (I) is preferably a methyl group, a phenyl group, or a hydroxyl group.
  • R 2 in the general formula (I) is preferably a methyl group, a phenyl group, or a 4-trifluorobutyl group.
  • the silicone oil represented by the general formula (I) has a number average molecular weight of preferably 180 to 20000, more preferably 1000 to 10,000.
  • silicone oil represented by the general formula (I) specifically, for example, terminal hydroxyl group-containing dimethyl silicone oil R 1 at both ends or one end is a hydroxyl group, all of R 1 and R 2 is a methyl group And dimethyl silicone oils in which some of the methyl groups of these dimethyl silicone oils are substituted with phenyl groups.
  • silicone oil examples include silicone oils manufactured by Shin-Etsu Chemical Co., Ltd. (for example, KF96L series, KF96 series, KF69 series, KF99 series, KF50 series, KF54 series, KF410 series, KF412 series, KF414). Series, FL series, etc., silicone oils manufactured by Toray Dow Corning Co., Ltd. (eg BY16-846 series, SF8416 series, SH200 series, SH203 series, SH230 series, SF8419 series, FS1265 series, SH510 series, SH550 series, SH710 series FZ-2110 series, FZ-2203 series, etc.).
  • the content ratio of the silicone oil to the silicone resin is preferably 0.5% to 250% by weight, more preferably 1% to 200% by weight, still more preferably 10% to 150% by weight, and particularly preferably. Is 30% to 120% by weight, most preferably 50% to 100% by weight.
  • the antifouling layer may contain any appropriate antifouling agent other than silicone oil as long as the effects of the present invention are not impaired. Only one type of such antifouling agent may be used, or two or more types may be used. Examples of such an antifouling agent include an algal inhibitor, a dispersant, liquid paraffin, a surfactant, a liquid hydrocarbon, a fluorinated oil, an antibacterial agent, a herbicide and the like.
  • any appropriate algae-proofing agent can be adopted as long as the effects of the present invention are not impaired.
  • Such an algae is preferably a photosystem II inhibitor.
  • the photochemical II inhibitor include urea-type algae and triazine-type algae.
  • urea-type anti-algae examples include 3- (3,4-dichlorophenyl) -1,1-dimethylurea, 3- (3,4-dichlorophenyl) -1-methoxy-1-methylurea, and 1,1-dimethyl.
  • triazine-based anti-algae agents examples include 2-methyl-thio-4-tert-butylamino-6-cyclopropylamino-s-triazine, 2-n-octyl-4-isothiazoline, 2-chloro-4,6-bis (Ethylamino) -1,3,5-triazine, 2-[(4-Chloro-6-ethylamino-1,3,5-triazin-2-yl) amino] -2-methylpropionitrile It is done.
  • any appropriate dispersant can be adopted as long as the effects of the present invention are not impaired.
  • a dispersant is preferably a modified silicone oil.
  • the modified silicone oil include a side chain modified silicone oil, a both terminal modified silicone oil, a one terminal modified silicone oil, and a side chain both terminal modified silicone oil.
  • liquid paraffin any appropriate liquid paraffin can be adopted as long as the effects of the present invention are not impaired.
  • liquid paraffin include P-40, P-55, P-60, P-70, P-80, P-100, P-120, P-150, P-200, P manufactured by MORESCO. -260, P-350, hydrocarbon liquid paraffin manufactured by Wako Pure Chemical Industries, Ltd.
  • surfactant examples include an anionic surfactant, a nonionic surfactant, an amphoteric surfactant, and a cationic surfactant.
  • anionic surfactant any appropriate anionic surfactant can be adopted as long as the effects of the present invention are not impaired.
  • anionic surfactants include, for example, alkylbenzene sulfonates, alkyl or alkenyl ether sulfates, alkyl or alkenyl sulfates, ⁇ -olefin sulfonates, ⁇ -sulfo fatty acid or ester salts, alkane sulfonates, Examples thereof include saturated or unsaturated fatty acid salts, alkyl or alkenyl ether carboxylates, amino acid type surfactants, N-acyl amino acid type surfactants, alkyl or alkenyl phosphate esters or salts thereof. Only one type of anionic surfactant may be used, or two or more types may be used.
  • nonionic surfactant any appropriate nonionic surfactant can be adopted as long as the effects of the present invention are not impaired.
  • nonionic surfactants include polyoxyalkylene alkyl or alkenyl ether, polyoxyethylene alkyl phenyl ether, higher fatty acid alkanolamide or an alkylene oxide adduct thereof, sucrose fatty acid ester, alkyl glycoxide, fatty acid glycerin monoester. Examples thereof include esters and alkylamine oxides. Only one nonionic surfactant may be used, or two or more nonionic surfactants may be used.
  • amphoteric surfactant any appropriate amphoteric surfactant can be adopted as long as the effects of the present invention are not impaired.
  • amphoteric surfactants include carboxy type or sulfobetaine type amphoteric surfactants. Only one amphoteric surfactant may be used, or two or more amphoteric surfactants may be used.
  • any appropriate cationic surfactant can be adopted as long as the effects of the present invention are not impaired.
  • examples of such cationic surfactants include quaternary ammonium salts. Only one type of cationic surfactant may be used, or two or more types may be used.
  • liquid hydrocarbon any appropriate liquid hydrocarbon can be adopted as long as the effects of the present invention are not impaired.
  • liquid hydrocarbon any appropriate liquid hydrocarbon can be adopted as long as the effects of the present invention are not impaired. Examples thereof include hexane, heptane, benzene, toluene, xylene, 1-tetradecene and the like.
  • fluorinated oil any appropriate fluorinated oil can be adopted as the fluorinated oil as long as the effects of the present invention are not impaired.
  • fluorinated oils include perfluoropolyether, perfluorodecalin, perfluorooctane, and the like.
  • Perfluoropolyether is preferred in terms of chemical stability.
  • the perfluoropolyether for example, the structural formula: A- (C 3 F 6 O) x (CF 2 O) y (C 2 F 4 O) z-B (wherein the end group A is —F, —CF 3 , —C 2 F 5 , —C 3 F 7 , —CF (CF 3 ) OCF 3 , —OF, —OCF 3 , —OC 2 F 5 , —OC 3 F 7 , —OCF (CF 3 ) Any one of OCF 3 , the terminal group B is any one of —CF 3 , —C 2 F 5 , —C 3 F 7 , —CF (CF 3 ) OCF 3 , and x, y, and z are 0 Or a positive integer, x + y + z> 1, and a viscosity at 25 ° C.
  • perfluoropolyether examples include, for example, CF 3 O— (CF 2 CF (CF 3 ) O) x (CF 2 O) y —CF 3 (wherein x and y are as described above). ), CF 3 O- (CF 2 O) y (C 2 F 4 O) z-CF 3 (wherein, y, z are as defined above), CF 3 O- (CF 2 CF (CF 3) O) x-CF 3 (wherein x is as described above) and F- (CF 2 CF 2 CF 2 O) x-C 2 F 5 (wherein x is as described above) Etc.
  • antibacterial agent any appropriate antibacterial agent can be adopted as long as the effects of the present invention are not impaired.
  • antibacterial agents include so-called antibacterial agents and herbicides.
  • antibacterial agents include, for example, azoxystrobin, benalaxyl, benomyl, viteltanol, bromconazole, captahol, captan, carbendazim, quinomethionate, chlorothalonil, clozolinate, cyprozinyl, diclofluanide, diclofene, diclomedin, dichlorane, Dietofencarb, dimethomorph, diniconazole, dithianon, epoxiconazole, famoxadone, fenarimol, fenbuconazole, fenfram, fenpiclonil, fentin, fluazinam, fludioxonil, fluorimide, fluquinconazole, fursulfamide, flutolanil, holpet, hexachlorobenzene, hexaconazole, imi Benconazole, Ipoconazole, Iprodi
  • examples of natural antibacterial agents include Chinese herbal ingredients such as Soso bamboo extract, hinokitiol, garlic extract and licorice.
  • inorganic antibacterial agents such as silver, copper, zinc, tin, lead, and gold, are mentioned.
  • zeolites, hydroxyapatite, calcium carbonate, silica gel, aluminum calcium silicate, polysiloxane compounds, zirconium phosphate, zirconium sulfate, ion exchangers, zinc oxide, etc. are used as carriers for these inorganic antibacterial agents as necessary. it can.
  • Examples of the synthetic antibacterial agent include 2-pyridinethiol-1-oxide, p-chloro-m-cresol, polyhexamethylene hyguanide, hydrochloride, benzethonium chloride, alkylpolyaminoethylglycine, benzisothiazoline, 5- And chloro-2-methyl-4-isothiazolin-3-one, 1,2-benzisothiazolin-3-one, 2,2′-dithio-bis- (pyridine-1-oxide), and the like.
  • herbicides for example, bensulfuron methyl, pyrazosulfuron ethyl, imazosulfuron, cyclosulfamuron, ethoxysulfuron, flucetosulfuron, azimusulfuron, primissulfuron, prosulfuron, rimsulfuron, halosulfuron methyl, nicosulfuron , Thifensulfuron methyl, tritosulfuron, foramsulfuron, amidosulfuron, chlorosulfuron, iodosulfuron, metsulfuron methyl, sulfosulfuron, flazasulfuron, chlorimuron ethyl, triflusulfuron methyl, oxas Ruflon, sulfometuron methyl, trifloxysulfuron sodium, flupirsulfuron ethyl sodium, imazamox, imazetapill, imazaquin
  • the antifouling layer may employ any other appropriate antifouling agent as long as the effects of the present invention are not impaired.
  • antifouling agents include waxes, petrolatum, animal fats, fatty acids, diatom adhesion inhibitors, agricultural chemicals, pharmaceuticals (such as medetomidine), enzyme activity inhibitors (such as alkylphenols and alkylresorcinols), biological repellents, and the like. Is mentioned.
  • these antifouling agents By using these antifouling agents, the adhesion preventing effect of aquatic organisms such as diatoms and barnacles is further improved.
  • the antifouling layer may contain any appropriate other additive as long as the effects of the present invention are not impaired.
  • examples of such other additives include a UV absorber as a weathering agent.
  • Specific examples of such ultraviolet absorbers include TINUVIN571, TINUVIN460, TINUVIN213, TINUVIN234, TINUVIN329, and TINUVIN326 made by BASF.
  • the addition amount of such an ultraviolet absorber is preferably 0.5% by weight or more and less than 10% by weight with respect to the silicone resin.
  • the filler can be added to the antifouling layer in order to improve the strength.
  • the filler include silica particles and diatomaceous earth.
  • grains by which the surface was hydrophobized from a dispersible viewpoint are preferable.
  • examples of such a surface treatment method include a surface treatment method using dimethylpolysiloxane, dimethyldichlorosilane, hexamethylenedisilazane, cyclic dimethylsiloxane, and the like.
  • the average particle size is preferably 5 nm to 300 nm.
  • the amount of such particles whose surface has been subjected to hydrophobic treatment is preferably 0.1% by weight to 20% by weight, more preferably 0.2% by weight to 15% by weight, based on the silicone resin. More preferably, it is 0.4 to 10% by weight.
  • the antifouling layer can be provided with sufficient strength, and the viscosity of the antifouling layer forming material can be suppressed.
  • the added material such as a soiling agent can be uniformly dispersed, and when applied on the base material layer, it can be applied precisely.
  • examples of such particles whose surface has been subjected to hydrophobic treatment include hydrophobic fumed silica manufactured by Nippon Aerosil Co., Ltd., specifically, trade name “AEROSIL (registered trademark) RX” manufactured by Nippon Aerosil Co., Ltd.
  • the antifouling layer may contain a crosslinking agent.
  • the antifouling layer contains a cross-linking agent, the antifouling effect of the antifouling layer can be expressed more fully, the mechanical properties of the antifouling layer can be expressed more fully, and when the base material layer exists Can express more excellent adhesion between the antifouling layer and the base material layer. Only one type of crosslinking agent may be used, or two or more types may be used.
  • a crosslinking agent having a functional group capable of reacting with a hydroxyl group is preferable, and examples thereof include an isocyanate compound, an epoxy compound, a melamine compound, a metal chelate compound, an oxazoline compound, an aziridine compound, and an ethyleneimine. It is done.
  • an isocyanate compound is preferable because the effects of the present invention can be further exhibited.
  • a polyfunctional isocyanate compound can be preferably used as the isocyanate compound.
  • examples of such polyfunctional isocyanate compounds include polyfunctional aliphatic isocyanate compounds, polyfunctional alicyclic isocyanate compounds, and polyfunctional aromatic isocyanate compounds.
  • polyfunctional aliphatic isocyanate compound examples include trimethylene diisocyanate, tetramethylene diisocyanate, hexamethylene diisocyanate, pentamethylene diisocyanate, 1,2-propylene diisocyanate, 1,3-butylene diisocyanate, dodecamethylene diisocyanate, 2,4,4 Examples include 4-trimethylhexamethylene diisocyanate.
  • polyfunctional alicyclic isocyanate compound examples include 1,3-cyclopentene diisocyanate, 1,3-cyclohexane diisocyanate, 1,4-cyclohexane diisocyanate, isophorone diisocyanate, hydrogenated diphenylmethane diisocyanate, hydrogenated xylylene diisocyanate, Examples include hydrogenated tolylene diisocyanate and hydrogenated tetramethylxylylene diisocyanate.
  • polyfunctional aromatic diisocyanate compound examples include phenylene diisocyanate, 2,4-tolylene diisocyanate, 2,6-tolylene diisocyanate, 2,2 ′ monodiphenylmethane diisocyanate, 4,4′-diphenylmethane diisocyanate, 4,4 Examples include '-toluidine diisocyanate, 4,4'-diphenyl ether diisocyanate, 4,4'-diphenyl diisocyanate, 1,5-naphthalene diisocyanate, and xylylene diisocyanate.
  • polyfunctional isocyanate compound examples include trimethylolpropane adducts of various polyfunctional isocyanate compounds as described above, burettes reacted with water, and trimers having an isocyanurate ring. These may be used in combination.
  • polyfunctional isocyanate compound examples include trade names “Coronate HK”, “Coronate HX”, “Coronate 2096”, “Coronate L”, “Coronate HL” (manufactured by Nippon Polyurethane Industry Co., Ltd.), trade names “Duranate TPA-100” (manufactured by Asahi Kasei Chemicals Corporation).
  • the thickness of the antifouling layer any appropriate thickness can be adopted depending on the application or use environment of the sealing tape of the present invention.
  • the thickness of the antifouling layer is preferably 5 ⁇ m to 500 ⁇ m.
  • a base material layer As a base material layer, arbitrary appropriate base material layers can be employ
  • Such a material for the base material layer is preferably excellent in water resistance, strength, flexibility and tearability.
  • the material for the base material layer include polyurethane resin, polyurethane acrylic resin, rubber resin, vinyl chloride resin, polyester resin, silicone resin, elastomers, fluororesin, polyamide resin, polyolefin resin (polyethylene, polypropylene, etc.) ) And the like.
  • the material of such a base material layer may be only one type or two or more types.
  • the elongation of the base material layer is preferably 100% or more, more preferably 120% or more, and further preferably 150% or more.
  • the sealing pressure-sensitive adhesive tape of the present invention can satisfactorily follow the shape of various adherends, and can be well affixed to a flat surface. Can be satisfactorily affixed to curved surface portions, 90 ° angle portions, acute angle portions, and the like.
  • the upper limit of the elongation of the base material layer is preferably 2000% or less from the viewpoint of the strength of the base material layer.
  • the base material layer has a breaking stress of preferably 10 MPa or more, more preferably 12 MPa or more, and further preferably 15 MPa or more.
  • the upper limit of the breaking point stress of the base material layer is preferably 200 MPa or less from the viewpoint of the handleability of the base material layer.
  • the elastic modulus of the base material layer is preferably 4000 MPa or less, more preferably 1000 MPa or less, still more preferably 100 MPa or less, and particularly preferably 50 MPa or less.
  • the lower limit of the elastic modulus of the base material layer is preferably 0.1 MPa or more from the viewpoint of handleability of the base material layer.
  • the base material layer may contain any appropriate additive as long as the effects of the present invention are not impaired.
  • additives include olefin resins, silicone polymers, liquid acrylic copolymers, tackifiers, anti-aging agents, hindered amine light stabilizers, ultraviolet absorbers, antioxidants, and antistatic agents. , Polyethyleneimine, fatty acid amide, fatty acid ester, phosphate ester, lubricant, surfactant, filler and pigment (for example, calcium oxide, magnesium oxide, silica, zinc oxide, titanium oxide, carbon black, etc.).
  • the base material layer preferably contains an ultraviolet absorber.
  • the weather resistance of the sealing adhesive tape of the present invention can be improved.
  • the thickness of the base material layer is preferably 1 ⁇ m to 1000 ⁇ m, more preferably 10 ⁇ m to 800 ⁇ m, and still more preferably 20 ⁇ m to 500 ⁇ m.
  • the pressure-sensitive adhesive tape for sealing of the present invention can be easily attached to a portion other than a flat surface such as a curved surface or an acute angle surface with good workability.
  • An advantage that appearance defects such as wrinkles and floats are unlikely to occur on the subsequent surface can also be expressed.
  • a primer may be applied to the base material layer in advance, or a silane coupling agent may be added in advance.
  • silane coupling agent Only one type of silane coupling agent may be used, or two or more types may be used. Specific examples of commercially available silane coupling agents include KBM5103, KBM1003, KBM903, KBM403, and KBM802 manufactured by Shin-Etsu Chemical Co., Ltd.
  • the content ratio of the silane coupling agent in the base material layer is preferably 0.01% by weight to 10% by weight.
  • any appropriate pressure-sensitive adhesive layer can be adopted as the pressure-sensitive adhesive layer as long as the effects of the present invention are not impaired.
  • the material for such an adhesive layer include acrylic resin adhesives, epoxy resin adhesives, amino resin adhesives, vinyl resin (vinyl acetate polymers, etc.) adhesives, and curable acrylic resin adhesives. Examples thereof include a pressure-sensitive adhesive and a silicone resin-based pressure-sensitive adhesive.
  • the material of the pressure-sensitive adhesive layer may be only one type or two or more types.
  • the pressure-sensitive adhesive layer preferably contains a silicone resin-based pressure-sensitive adhesive.
  • the pressure-sensitive adhesive layer contains a silicone resin-based pressure-sensitive adhesive, the adhesion reliability to the sheet having the antifouling layer (A1) of the sealing pressure-sensitive adhesive tape of the present invention on the surface can be increased.
  • silicone resin adhesive examples include KR-100, KR101-10, KR130, KR-3700, KR3701, X-40-3237-1, X-40-3240, X, manufactured by Shin-Etsu Chemical Co., Ltd. -3291-1 etc .; SD 4580 PSA, SD 4584 PSA, SD 4585 PSA, SD 4587 L PSA, SD 4560 PSA, SD 4570 PSA, SD 4600 FC PSA, SD 4593 PSA, DC manufactured by Toray Dow Corning Co., Ltd.
  • the content ratio of the silicone resin-based pressure-sensitive adhesive in the pressure-sensitive adhesive layer is preferably 50% by weight to 100% by weight, more preferably 60% by weight to 100% by weight, and still more preferably 70% by weight to 100% by weight. %, Particularly preferably 80% to 100% by weight, and most preferably 90% to 100% by weight.
  • the pressure-sensitive adhesive layer has a 180-degree peel adhesive strength at 23 ° C. and a tensile speed of 300 mm / min, preferably 30 N / 20 mm or less, more preferably 20 N / 20 mm or less, and further preferably 15 N / 20 mm or less. .
  • the pressure-sensitive adhesive layer can be easily peeled off from the adherend by adjusting the 180-degree peel adhesive strength at 23 ° C. and a tensile speed of 300 mm / min within the above range.
  • the lower limit of the 180-degree peel adhesive force at 23 ° C. and a tensile speed of 300 mm / min of the pressure-sensitive adhesive layer is preferably 3 N / 20 mm or more from the viewpoint of maintaining sufficient adhesive force.
  • the compression elastic modulus of the portion of the pressure-sensitive adhesive layer in contact with seawater is preferably 1. It is 1 time or more, More preferably, it is 1.2 times or more, More preferably, it is 1.5 times or more.
  • the compression elastic modulus of the portion of the pressure-sensitive adhesive layer in contact with seawater is adjusted within the above range with respect to the compression elastic modulus in the pressure-sensitive adhesive layer before seawater contact. By doing so, good adhesiveness can be expressed even in water.
  • the upper limit of the magnification of the compression elastic modulus of the portion of the pressure-sensitive adhesive layer that is in contact with seawater with respect to the compression elastic modulus of the pressure-sensitive adhesive layer before seawater contact is From the viewpoint, it is preferably 100 times or less.
  • seawater as used in this specification means commercially available simulated seawater (artificial seawater). More specifically, it is an aqueous solution close to a seawater component that contains sodium chloride as a main component, contains inorganic salts, a pH adjuster, and the like and has a specific gravity of 1.02 to 1.04 at room temperature.
  • SeaWater Jex Corporation
  • SeaWater was dissolved in distilled water at 36 g / L.
  • the thickness of the pressure-sensitive adhesive layer is preferably 10 ⁇ m or more. By adjusting the thickness of the pressure-sensitive adhesive layer within the above range, the shape of the adherend can be sufficiently followed, the adhesion area can be secured, and sufficient adhesive strength can be expressed.
  • the upper limit of the thickness of the pressure-sensitive adhesive layer is preferably 100 ⁇ m or less from the viewpoint of handleability.
  • the sealing pressure-sensitive adhesive tape of the present invention can be produced by any appropriate method.
  • a method for example, a method of attaching the antifouling layer (A2) and the pressure-sensitive adhesive layer, and after applying the pressure-sensitive adhesive layer and the base material layer, the antifouling layer (A2) forming material is applied onto the base material layer.
  • the method for forming an antifouling layer (A2) applying an adhesive layer forming material on one surface of the base material layer to form an adhesive layer, and forming the antifouling layer on the other surface of the base material layer ( A2)
  • A2 After forming the base material layer / adhesive layer laminate by coextruding the base material layer forming material and the adhesive layer forming material by applying the forming material to form the antifouling layer (A2)
  • Examples include a method of forming the antifouling layer (A2) by applying the antifouling layer (A2) forming material on the base material layer.
  • Examples of the method for applying the antifouling layer forming material on the base material layer include spraying, brushing, roller, curtain flow, roll, dip, and coater.
  • the antifouling layer-forming material is applied onto the base material layer by these methods, and the antifouling layer is formed, for example, by drying at a temperature from room temperature to 250 ° C. (preferably from room temperature to 180 ° C.). can do.
  • a fine coater such as a comma coater is used to apply the antifouling layer forming material on the base material layer.
  • Example 1 Adhesive layer SD4592 (PSA, manufactured by Toray Dow Corning), BY24-741 (crosslinking agent, manufactured by Toray Dow Corning), SRX212 (catalyst, manufactured by Toray Dow Corning) and toluene were used at 100: 0.6: 0.54: 53. 3 was mixed and stirred to prepare a silicone adhesive solution. Thereafter, the above solution was applied onto a cover separator (PET liner, fluorine-treated, manufactured by Nipper) using an applicator, dried and cured at 150 ° C. for 3 minutes, and an adhesive layer having a thickness of 50 ⁇ m was obtained.
  • PAT liner fluorine-treated, manufactured by Nipper
  • Anti-fouling layer Addition-type silicone elastomer (KE-1950, manufactured by Shin-Etsu Chemical Co., Ltd.) and silicone oil (KF96-100Cs, manufactured by Shin-Etsu Chemical Co., Ltd.) on a cover separator (PET liner, fluorine-treated, manufactured by Nipper) A mixed solution mixed at 100: 90 (weight ratio) was applied with an applicator and cured at 150 ° C. for 5 minutes to obtain an antifouling layer. (Adhesive tape) The obtained adhesive layer and antifouling layer were bonded together to obtain an adhesive tape. The structure of the obtained adhesive tape was an antifouling layer (thickness: 100 ⁇ m) / adhesive layer (thickness: 50 ⁇ m).
  • Example 2 A pressure-sensitive adhesive layer was obtained in the same manner as in Example 1. (Adhesive tape) The obtained pressure-sensitive adhesive layer and the base material layer (Esmer URS PXII, carbonate polyurethane film, manufactured by Nihon Matai) were bonded together with a hand roller to obtain a laminate. 100: 90 (weight) of addition type silicone elastomer (KE-1950, manufactured by Shin-Etsu Chemical Co., Ltd.) and silicone oil (KF96-100Cs, manufactured by Shin-Etsu Chemical Co., Ltd.) on the base material layer of this laminate. Ratio) was applied with an applicator to form a syrup layer having a thickness of 100 ⁇ m.
  • silicone elastomer KE-1950, manufactured by Shin-Etsu Chemical Co., Ltd.
  • silicone oil KF96-100Cs, manufactured by Shin-Etsu Chemical Co., Ltd.
  • the structure of the obtained adhesive tape was antifouling layer (thickness: 100 ⁇ m) / base material layer (thickness: 100 ⁇ m) / adhesive layer (thickness: 50 ⁇ m).
  • Example 3 Adhesive layer SD4593 (PSA, manufactured by Toray Dow Corning), BY24-741 (crosslinking agent, manufactured by Toray Dow Corning), SRX212 (catalyst, manufactured by Toray Dow Corning) and toluene were used at 100: 0.6: 0.54: 53. 3 was mixed and stirred to prepare a silicone adhesive solution. Thereafter, the above solution was applied onto a cover separator (PET liner, fluorine-treated, manufactured by Nipper) using an applicator, dried and cured at 150 ° C. for 3 minutes, and an adhesive layer having a thickness of 50 ⁇ m was obtained.
  • PAT liner fluorine-treated, manufactured by Nipper
  • Anti-fouling layer Addition-type silicone elastomer (KE-1950, manufactured by Shin-Etsu Chemical Co., Ltd.) and silicone oil (KF96-100Cs, manufactured by Shin-Etsu Chemical Co., Ltd.) on a cover separator (PET liner, fluorine-treated, manufactured by Nipper) A mixed solution mixed at 100: 90 (weight ratio) was applied with an applicator and cured at 150 ° C. for 5 minutes to obtain an antifouling layer. (Adhesive tape) The obtained adhesive layer and antifouling layer were bonded together to obtain an adhesive tape. The structure of the obtained adhesive tape was an antifouling layer (thickness: 100 ⁇ m) / adhesive layer (thickness: 50 ⁇ m).
  • Example 4 A pressure-sensitive adhesive layer was obtained in the same manner as in Example 3.
  • the obtained pressure-sensitive adhesive layer and the base material layer (Esmer URS PXII, carbonate polyurethane film, manufactured by Nihon Matai) were bonded together with a hand roller to obtain a laminate.
  • the structure of the obtained adhesive tape was antifouling layer (thickness: 100 ⁇ m) / base material layer (thickness: 100 ⁇ m) / adhesive layer (thickness: 50 ⁇ m).
  • the antifouling method for the structure surface of the present invention is, for example, antifouling on the surface of ships, buoys, harbor facilities, offshore oilfield facilities, waterways for power plant cooling water, waterways for factory cooling water, water floating passages, etc. Can be suitably used for imparting.

Abstract

Cette invention concerne un procédé antisalissures de surface de structure capable d'alléger la charge de travail, d'accroître la précision du travail et de réduire la contamination pendant le travail, de façon qu'une excellente propriété antisalissures puisse s'exercer. Un ruban adhésif d'étanchéité qui peut être utilisé de préférence pour ledit procédé antisalissures de surface de structure est en outre décrit. Le procédé antisalissures de surface de structure est un procédé consistant à tapisser au moins une partie d'une surface de structure avec une pluralité de feuilles, portant chacune sur leur surface une couche antisalissures (A1), pour conférer ainsi une propriété antisalissures à au moins une partie de la surface de structure, le procédé comprenant le collage d'un ruban adhésif contenant une couche antisalissures (A2) et une couche adhésive sensible à la pression (B) de façon à couvrir en même temps les parties de bords des feuilles qui sont adjacentes. Ce ruban adhésif d'étanchéité est un ruban adhésif qui contient la couche antisalissures (A2) et la couche adhésive sensible à la pression (B), et couvre en même temps les parties de bords des feuilles qui sont adjacentes et portent chacune sur leur surface la couche antisalissures (A1).
PCT/JP2015/084243 2015-01-05 2015-12-07 Procédé antisalissures de surface de structure et ruban adhésif d'étanchéité WO2016111108A1 (fr)

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EP3330326A1 (fr) * 2016-12-02 2018-06-06 PPG Coatings Europe B.V. Système de revêtement de libération d'obstruction
WO2019189412A1 (fr) 2018-03-28 2019-10-03 中国塗料株式会社 Film de revêtement antisalissure et procédé pour le fabriquer, structure de contact avec l'eau avec film de revêtement antisalissure, et bande antisalissure et procédé pour la fabriquer
WO2020105630A1 (fr) 2018-11-19 2020-05-28 中国塗料株式会社 Film de revêtement antisalissure ayant un film de revêtement, procédé permettant de produire ce dernier, ruban antisalissure et procédé permettant de produire une structure qui comporte un film de revêtement antisalissure et qui est en contact avec de l'eau
CN116323188A (zh) 2020-09-29 2023-06-23 中国涂料株式会社 防污涂料组合物

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JPH0427076B2 (fr) * 1988-02-18 1992-05-08 Nichiban Kk
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