Abstract: An aqueous dispersion of a tertiary amine terminated polyether and a carboxylic acid functional polymer. The tertiary amine terminated polyether is the product of the reaction of the epoxy group of an epoxy resin with the hydroxy group of a hydroxy functional tertiary amine and the carboxylic acid functional polymer is present in an amount sufficient to render the combination water dispersible.A process for producing the aqueous dispersion is also described, together with coating compositions based on the dispersion. These coating compositions are particularly useful in the lining of metal containers for food and beverages.

Abstract: Marine anti-fouling compositions contain, in addition to the conventional resin, toxin, solvent, pigment and other additives, hollow particles, of size from 1 to 800 microns, in an amount to give a particle concentration in a dry paint film of 10 to 80% by volume. The hollow particles are preferably hollow microspheres or microballoons of glass or plastics material having an apparent bulk density of from 0.03 to 0.5 g/cc. The compositions can be applied at high film thicknesses in a single coat without crack-formation. The particles assist in maintaining a controlled slow release of toxin from the paint film, and can enhance the useful protective life thereof.

Abstract: A cartridge assembly for a fluent substance dispenser includes a cartridge having an elongate chamber containing a fluent substance to be dispensed and a piston mounted at one end of the chamber for movement along the chamber. The other end of the chamber is provided with an outlet for the fluent substance, and a valve member is mounted inside the cartridge over the inside of the outlet and is movable away from a closed position to an open position by a member, in the form of a nozzle, pressed against the valve member from outside the cartridge. In use the cartridge assembly is housed in a dispenser.

Abstract: Pigmented coating compositions having improved opacity and film strength comprise an aqueous latex of film-forming resin binder, a non-solvent for the resin binder of sufficiently low volatility to produce, upon first removing water from a film of the coating composition and secondly removing said non-solvent, a continuous non-porous microcellular film having minute discrete substantially closed voids, non-film-forming granules of a polymer which is not dissolved by the non-solvent, and pigment and/or extender, which may be present in the latex or the non-solvent or the polymer granules. The polymer granules may be spheroidal beads or aggregates. The non-solvent and the polymer granules alleged to act synergistically to improve the opacity of the paint.

Abstract: Random copolymers are derived from a variety of ethylenically unsaturated monomers and are characterised by containing a 1-olefine heat-reaction product which has been made by a free-radical polymerisation of a normally liquid 1-olefine having from 6 to 22 carbon atoms until the product has a non-volatile content of from 1% to 60%. The copolymers are useful in the field of surface coatings.