Abstract: Adhesive compositions based on 2-cyanoacrylate monomers in which viscosity is controlled by dissolved copolymers of an alkyl-2-cyanoacrylate and a styrene.

Abstract: Method and device for metering and dispensing viscous or partly fluid materials in which the fluid material is flowed downwardly as a column through a tube, is separated into portions by injecting gas into the column to form bubbles spaced along the length of the fluid column and discharging the separated portions from an outlet opening of the tube. The apparatus includes a tube together with a controlled fluid material supply, a gas supply, a gas inlet for generating bubbles to separate fluid passing through the tube into portions and an outlet from the tube for discharging separated portions of fluid. The fluid portions may be collected and maintained separate by deposition in a displaceable medium such as air, liquid or powder, or by separate containers for each portion. The portions deposited in powder may pick up powder in the form of a non-tacky coating.

Abstract: Heat softenable adhesive, particularly in film form, and based on polyurethane from reaction of a diisocyanate and a polyester glycol including terephthalic acid and hexane diol, 1,6 units, especially useful in a shoe making method in which a film of the adhesive is disposed between the attaching surface of a shoe upper and edge portions of a mold and hot molten plastic is injected into the mold to melt and activate the adhesive and to form a tread member strongly adhered to the shoe bottom with the aid of the adhesive.

Abstract: Adhesive compositions based on 2-cyanoacrylate monomers in which storage stability, cure speed and other properties are improved by inclusion of itaconic acid anhydride.

Abstract: Method of making a self-locking threaded element, e.g. a screw including a strongly adhered convexly curved plastic body on its threaded surface allowing smooth assembly and giving strong frictional engagement between the element and a mating threaded surface. In the method, a stream of fine particles of heat-softenable plastic is directed against a threaded surface portion of a heated metallic element. Contacting particles are caught on the heated surface and fused by heat from the element to form a continuous plastic body which is then hardened by cooling.