Abstract: As a conventional antifouling measure to prevent adherence of aquatic organisms to a submersible sensor unit, a grease containing a stimulant, such as mustard, capable of repelling aquatic organisms is applied onto a sensing part thereof, thereby preventing adherence of the aquatic organisms. However, the irritant-containing grease applied onto the sensing part will come off within one to two months, resulting in disappearance of its effect. Thus, it is necessary to perform work of pulling up the submersible sensor unit and re-applying the grease, in each case. The present invention provides a water flow resistant submersible sensor unit which comprises an aquatic organism adherence preventive film capable of preventing adherence of aquatic organisms even when used in the submersible sensor unit for about half a year, almost without involving any underwater movement, and capable of, after use, being easily peeled off from the submersible sensor unit.

Abstract: A film contains a ?-1,3-glucan derivative obtained by introducing an acyl group into a ?-1,3-glucan and at least one resin selected from the group consisting of a rosin-based resin, a terpene-based resin, and a petroleum-based resin. The acyl group is represented by RCO—, and the R is a hydrocarbon group having 1 or more and 5 or less carbon atoms. Parts by weight of the resin with respect to 100 parts by weight of the ?-1,3-glucan derivative are 90 parts by weight or less. A pressure-sensitive adhesive tape includes the film and a pressure-sensitive adhesive layer.

Abstract: An adhesive composition contains a ?-1,3-glucan derivative having a degree of substitution of the acyl group of 2.6 or more and less than 3.0, and an isocyanate-based crosslinking agent. A pressure-sensitive adhesive tape includes a pressure-sensitive adhesive layer formed from the adhesive composition.

Abstract: An adhesive composition contains a ?-1,3-glucan derivative obtained by introducing an acyl group into ?-1,3-glucan; and a terpene-based resin. An adhesive tape includes an adhesive layer formed from the adhesive composition.

Abstract: An adhesive composition contains a ?-1,3-glucan derivative obtained by introducing an acyl group into ?-1,3-glucan; and a petroleum-based resin. An adhesive tape includes an adhesive layer formed from the adhesive composition.

Abstract: An adhesive composition contains a ?-1,3-glucan derivative obtained by introducing an acyl group into ?-1,3-glucan; and a rosin-based resin. An adhesive tape (1) includes an adhesive layer (3) formed from the adhesive composition.

Abstract: The present invention relates to a composition for peelable-coating-film formation including an elastomer and an amino-modified silicone oil, wherein a film formed from the composition for peelable-coating-film formation has a breaking strength of FB (N/20 mm) in a tensile test and a coating film formed from the composition for peelable-coating-film formation on a surface of an SUS304 plate has a peel adhesive force of FG (N/20 mm) in peeling from the SUS304 plate, FB/FG being 1.5 or larger.

Abstract: The present invention relates to a method for peeling off a strippable coating film formed on a surface of an adherend, including: a first step of preliminarily putting a trigger part in contact with at least a part of the surface of the adherend between the strippable coating film and the adherend; a second step of removing the trigger part so as to break at least a part of the strippable coating film; and a third step of peeling off the strippable coating film by using, as a trigger, a broken portion of the strippable coating film.

Abstract: Conventional aquatic organism adherence preventive films are designed for an underwater structure (mainly, a boat/ship or the like) capable of moving through water at relatively high speeds. That is, there has been no film capable of adequately preventing adherence of aquatic organisms to a sensor over a long period of time, and capable of being easily peeled off from a submersible sensor unit while preventing a pressure-sensitive adhesive from remaining on a housing of the submersible sensor unit. The present invention provides an aquatic organism adherence preventive film capable of preventing adherence of aquatic organisms even when used in an underwater structure receiving almost no a water flow resistance, e.g., an underwater structure involving almost no underwater movement, for about half a year, and capable of being easily peeled off from a submersible sensor unit while preventing a pressure-sensitive adhesive from remaining on a housing of the submersible sensor unit.

Abstract: The current disclosure describes a polymer composite which can comprise a polyurethane and a functionalized polyalkyl-siloxane. Polymer composites described herein can be useful for having and/or enhancing antifouling activity.

Abstract: A coating film capable of being peeled off in the shape of sheet to facilitate a coating film removal work, and is less likely to peel even after long periods of use on an underwater structure is provided. The coating film comprises an undercoat layer to be bonded to an underwater structure, and an antifouling layer bonded to the undercoat layer, wherein: a 100-gram underwater constant load peeling degree of the coating film is less than 5; a ratio of a tensile breaking strength of the coating film to an adhesive force of the coating film with respect to the underwater structure, as measured after immersing the coating film in pure water at 60° C. for 5 weeks is 1.5 or more; and a 1-mm square cross-cut stretching-caused peeling degree of the antifouling layer with respect to the undercoat layer is 0.05 or less.

Abstract: An object of the present invention is to provide a coating film that can be peeled in a sheet form, facilitates removal work and is less likely to be peeled even if used for a long period of time, and an undercoat layer-forming composition for forming an undercoat layer of the coating film. The present invention relates to an undercoat layer-forming composition for forming an undercoat layer of a coating film including the undercoat layer and an antifouling layer adhered to the undercoat layer, wherein the undercoat layer-forming composition comprises a base polymer and a silicone polymer, and a polar group-containing substituent is bonded to at least a part of the silicone polymer.

Abstract: An object of the present invention is to provide a coating film that can be peeled in a sheet form, facilitates removal work and is less likely to be peeled even if used in an underwater structure for a long period of time, and an undercoat layer-forming composition for forming an undercoat layer of the coating film. The present invention relates to an undercoat layer-forming composition for forming an undercoat layer of a coating film including the undercoat layer and an antifouling layer which contains a silicone oil and is adhered to the undercoat layer, wherein the undercoat layer-forming composition contains a base polymer and a tackifying resin.

Abstract: As a conventional antifouling measure to prevent adherence of aquatic organisms to a submersible sensor unit, a grease containing a stimulant, such as mustard, capable of repelling aquatic organisms is applied onto a sensing part thereof, thereby preventing adherence of the aquatic organisms. However, the irritant-containing grease applied onto the sensing part will come off within one to two months, resulting in disappearance of its effect. Thus, it is necessary to perform work of pulling up the submersible sensor unit and re-applying the grease, in each case. The present invention provides a water flow resistant submersible sensor unit which comprises an aquatic organism adherence preventive film capable of preventing adherence of aquatic organisms even when used in the submersible sensor unit for about half a year, almost without involving any underwater movement, and capable of, after use, being easily peeled off from the submersible sensor unit.

Abstract: An object of the present invention is to provide a coating film forming composition that can form a coating film stably exhibiting an inhibiting effect on the adhesion of aquatic organisms even in the presence of physical factors, for example, water flow in the water. The present invention relates to a coating film forming composition for forming a coating film, the coating film forming composition containing a silicone resin and a silicone oil, wherein a coating film formed of the coating film forming composition satisfies the following (1) and (2). (1) A water contact angle of the coating film after the elapse of 5 minutes after dropping water on the coating film is 80° or less. (2) A water contact angle of the coating film after the elapse of 5 minutes after bringing the coating film into contact with methanol for 3 hours, followed by dropping water on the coating film is 80° or less.

Abstract: The present invention provides a pressure-sensitive adhesive tape for preventing adhesion of aquatic organisms, which includes an antifouling layer, a base material layer and a pressure-sensitive adhesive layer in this order, which has the base material layer composed of an inexpensive material, and which has high adhesion between the antifouling layer and the base material layer without performing the easy adhesion treatment, for example, a primer treatment or a corona treatment. A pressure-sensitive adhesive tape for preventing adhesion of aquatic organisms of the present invention comprises an antifouling layer, a base material layer and a pressure-sensitive adhesive layer in this order, wherein the base material layer contains an ionomer resin.

Abstract: The present invention provides an anti-fouling pressure-sensitive adhesive sheet and anti-fouling treatment method capable of preventing peeling from overlapping portions when adjacent anti-fouling pressure-sensitive adhesive sheets are attached by allowing end portions thereof to overlap each other. The anti-fouling pressure-sensitive adhesive sheet of the present invention includes a base material layer; a pressure-sensitive adhesive layer provided on one side of the base material layer; and an anti-fouling layer provided on another side of the base material layer, wherein the anti-fouling pressure-sensitive adhesive sheet has, at an end portion thereof, a bonding margin including parts of the base material layer and the pressure-sensitive adhesive layer, the parts extending beyond the anti-fouling layer.

Abstract: The present invention provides a pressure-sensitive adhesive tape for preventing adhesion of aquatic organisms, which includes an antifouling layer, a base material layer and a pressure-sensitive adhesive layer in this order, which has the base material layer composed of an inexpensive material, and which has high adhesion between the antifouling layer and the base material layer without performing the easy adhesion treatment, for example, a primer treatment or a corona treatment. A pressure-sensitive adhesive tape for preventing adhesion of aquatic organisms of the present invention comprises an antifouling layer, a base material layer and a pressure-sensitive adhesive layer in this order, wherein the base material layer contains an ionomer resin.

Abstract: Provided is a pressure-sensitive adhesive tape for preventing adhesion of aquatic organisms, which can express good adhesion even in water, has good mechanical characteristics, facilitates its peeling operation, can maintain an antifouling effect over a long time period, has a small load on a human body or an environment, has a light weight, can maintain stable quality, and can effectively prevent adhesion of aquatic organisms. The pressure-sensitive adhesive tape for preventing adhesion of aquatic organisms of the present invention includes an antifouling layer, a base material layer, and a pressure-sensitive adhesive layer in the stated order, in which: the antifouling layer includes a silicone resin; the antifouling layer includes an antifouling agent; the antifouling agent essentially includes a silicone oil and a liquid paraffin; and the antifouling agent includes at least one kind selected from a surfactant, a liquid hydrocarbon, a fluorinated oil, and an antimicrobial agent.

Abstract: A laminated optical film according to an embodiment of the present invention includes a polarizing plate and a retardation layer formed of a water dispersible pressure-sensitive adhesive composition containing an inorganic laminar compound.