Abstract: The application describes a device in the form of a robot for performing operations on ship hulls. The robot comprises magnetic wheels enabling the robot to adhere to ferrous hulls via magnetic forces and a suspension arrangement for supporting the wheels on a body of the robot and for allowing the robot to travel over uneven surfaces. The wheels include a first pair of wheels and a second pair of wheels, with the pairs of wheels spaced apart from one another along a length of the robot. The suspension arrangement comprises a suspension pivot mechanism allowing a line extending between the centers of the first pair of wheels to rotate relative to a line extending between the centers of the second pair of wheels, along with a camber pivot mechanism for each wheel, with the camber pivot mechanism allowing the axis of rotation of the wheel to rotate relative to the axes of rotation of the other wheels in order that the wheel can align its axis of rotation with the surface of the hull.

Abstract: A method of controlling a robot configured to clean a hull of a vessel whilst travelling over said hull, the method comprising: receiving at least one signal indicative of a speed of the vessel; during cleaning being performed by the robot, detecting that cleaning being performed by the robot is to be paused based on (i) determining, from said at least one signal, that the speed of the vessel exceeds a predetermined speed threshold, or (ii) predicting, using said at least one signal, that the speed of the vessel will exceed the predetermined speed threshold within a predetermined time period; in response to said detecting that cleaning being performed by the robot is to be paused, outputting a pause cleaning signal indicating that said cleaning is to be paused; whilst said cleaning is paused, detecting that cleaning performed by the robot is to be restarted based on the determining that the speed of the vessel has dropped below the predetermined threshold, and in response, outputting a restart cleaning signal

Abstract: The present invention relates to an aqueous primer comprising: (A) a polysiloxanesol; and (B) 0.1 to 30 wt % of a water-soluble zinc salt having a solubility in deionised water of at least 0.5 g/L at 25° C.

Abstract: A method of network data transmission is implemented by a computer device, and includes: defining every data packet to be generated by a specific application program as belonging to a direct data packet; defining every data packet to be generated by other application programs as belonging to a controlled data packet; determining which one of the direct data packet and the controlled data packet a data packet belongs to; and when it is determined that the data packet belongs to the direct data packet, transmitting the data packet, and delaying transmission of another data packet which is determined as belonging to the controlled data packet and which is received later than the data packet that is determined as belonging to the direct data packet.

Abstract: An ultra-high solids content primer coating composition comprising: (i) 5.0 to 50 wt % of at least one bisphenol F epoxy resin; (ii) 1.5 to 12 wt % of at least one silane; (iii) 0 to 20 wt % of at least one hydrocarbon resin; (iv) 0 to 15 wt % of at least one reactive diluent; (v) at least one curing agent; wherein said composition has a solids content of at least 90 wt % according to ASTM D5201-05; wherein said composition has a viscosity of 200 to 800 cps at 23° C.

Abstract: An ultra-high solids content primer coating composition comprising: (i) 5.0 to 50 wt % of at least one bisphenol F epoxy resin; (ii) 1.5 to 12 wt % of at least one silane; (iii) 0 to 20 wt % of at least one hydrocarbon resin; (iv) 0 to 15 wt % of at least one reactive diluent; (v) at least one curing agent; wherein said composition has a solids content of at least 90 wt % according to ASTM D5201-05; wherein said composition has a viscosity of 200 to 800 cps at 23° C. and 50% RH (ASTM D4287); and wherein the ratio between hydrogen equivalents in the curing agent and epoxy equivalents of the coating composition is in the range 50:100 to 120:100.

Abstract: A particulate coating composition, and preferably a powder coating composition, comprising: (i) at least one polyester polymer; (ii) at least one hardener; (iii) at least 0.1 wt % of at least one metallic pigment; and (iv) at least one polyorganosiloxane.

Abstract: A binder for a marine coating composition comprising the reaction product of a polysiloxane unit A? and at least one second monomer B? that undergoes a polymerisation reaction with said polysiloxane unit A? so as to form a copolymer of structure -[ABAB]- wherein the backbone of said copolymer comprises a plurality of hydrolysable ester functional groups that will hydrolyse in the presence of seawater.

Abstract: A composition for use in the manufacture of a fouling release coating, e.g. at least one layer of a fouling release coating, comprising at least one curable or crosslinkable polysiloxane and at least one silane terminated polyurethane.

Abstract: An aqueous shop primer comprising: (A) 25 to 80 wt % of a polysilane sol; (B) 0.5 to 15 wt % of an accelerator selected from at least one of zinc phosphate, zinc oxide, calcium strontium zinc phosphosilicate, zirconium hydrogen phosphate, iron phosphide, calcium zirconate, barium zirconate, zirconium nitride, zinc titanate and iron(II) titanate; (C) 15 to 40 wt % of at least one anticorrosive pigment; (D) 0.5 to 10 wt % microspheres.

Abstract: An ultra-high solids content primer coating composition comprising: (i) 5.0 to 50 wt % of at least one bisphenol F epoxy resin; (ii) 1.5 to 12 wt % of at least one silane; (iii) 0 to 20 wt % of at least one hydrocarbon resin; (iv) 0 to 15 wt % of at least one reactive diluent; (v) at least one curing agent; wherein said composition has a solids content of at least 90 wt % according to ASTM D5201-05; wherein said composition has a viscosity of 200 to 800 cps at 23° C. and 50% RH (ASTM D4287); and wherein the ratio between hydrogen equivalents in the curing agent and epoxy equivalents of the coating composition is in the range 50:100 to 120:100.

Abstract: The present invention relates to the use of polyoxalates as binders for antifouling coating compositions and antifouling coating compositions comprising the polyoxalates.

Abstract: A particulate coating composition, preferably a powder coating composition comprising at least one epoxy containing compound, at least one polycarboxyl polymer, at least one organic Lewis acid and at least one organic Lewis base.

Abstract: A particulate coating composition, preferably a powder coating composition comprising at least one epoxy containing compound, at least one polycarboxyl polymer, at least one organic Lewis acid and at least one organic Lewis base.

Abstract: The present invention relates to the use of polyoxalates as binders for antifouling coating compositions and antifouling coating compositions comprising the polyoxalates.

Abstract: The present invention relates to the use of polyoxalates as binders for antifouling coating compositions and antifouling coating compositions comprising the polyoxalates.

Abstract: A binder for an antifouling composition comprising a mixture of: (i) at least one organic monofunctional acid or a salt thereof; (ii) at least one organic polyfunctional acid having a molecular weight of 300 to less than 1000 or a salt thereof, e.g. a dimerised, trimerised or oligomerised fatty acid or resin acid; and (iii) at least one metal compound.

Abstract: The present invention relates to silyl ester copolymers useful as binders in antifouling coating compositions and antifouling coating compositions comprising the silyl ester copolymers. The silyl ester copolymers comprise repeating units of monomers A, B and optionally C. A is one or more monomers selected from the group consisting of triorganosilyl esters of polymerisable ethylenically unsaturated carboxylic acids. B is one or more monomers selected from the group consisting of lactone modified hydroxyalkyl (meth)acrylates, and C is one or more monomers selected from the group consisting of polymerisable ethylenically unsaturated compounds.

Abstract: The present invention relates to the use of polyoxalates as binders for antifouling coating compositions and antifouling coating compositions comprising the polyoxalates.

Abstract: The invention relates to a branched silyl ester copolymer comprising repeating units of (A) one or more monomers containing one polymerisable ethylenically unsaturated bond, of which at least one monomer is containing silyl ester functionality, (B) one or more monomers containing two or more polymerisable ethylenically unsaturated bonds, and (C) one or more chain transfer agents. Furthermore, the invention relates to the use of said branched silyl ester copolymer as a component in an antifouling coating composition, as well as to an antifouling coating composition comprising said branched silyl ester copolymer and one or more other components.