Abstract: The present invention relates to a process for the separation of at least one metal from a slag, comprising that at least one metal and further components, comprising at least step (A) grinding the slag, (B) if appropriate, contacting the ground slag of step (A) with at least one surface-active substance and/or at least one magnetic particle, if appropriate in the presence of at least one dispersant, resulting in formation of agglomerates of the at least one metal and the at least one magnetic particle, (C) if appropriate, addition of at least one dispersant to the mixture obtained in step (B) to give a dispersion having a suitable concentration, and (D) separation of the agglomerates from the mixture of step (B) or (C) by application of a magnetic field, and to the use of at least one magnetic particle for the separation of slag.

Abstract: The present invention relates to a process for separating at least one first substance from a mixture comprising this at least one first substance and at least one second substance, comprising the steps of (A) bringing the mixture comprising at least one first substance and at least one second substance into contact with at least one surface-active substance, (B) if required, addition of at least one dispersing medium to the mixture obtained in step (A) in order to obtain a dispersion, and (C) separation of the adduct of at least one first substance and at least one surface-active substance from the dispersion from step (A) or (B), for example by means of flotation, at least one additive which is either a monomolecular compound comprising amino and carboxyl groups or derivatives thereof or a polymeric compound obtainable by reaction of alkylene oxides and/or aziridines, or mixtures thereof, being added to the mixture comprising at least one first substance and at least one second substance.

Abstract: The present invention is directed to a method for the high throughput tack-free packaging of a hot-melt thermoplastic or thermosetting pressure sensitive adhesive composition. The method provides for the conveyorized packaging of a continuous stream of a molten hot-melt adhesive composition in a non-tack thermoplastic film wherein the stream is converted into two or more rows of tack-free packaged hot-melt blocks.

Abstract: The present invention is directed to a method for the waste-free packaging for a hot-melt pressure sensitive adhesive that comprises extruding a hot-melt pressure sensitive adhesive into a continuous tubular film, wherein the film is compatible with being integrated into the composition of the hot-melt adhesive composition; and crimping the continuous tubular film at a predetermined distance such that a predetermined amount of the hot-melt pressure sensitive adhesive is isolated between at least two of the crimps to produce a compatibly packaged hot-melt adhesive composition. By melting the compatibly packaged hot-melt adhesive composition in a glue pot, the compatible packaging becomes compatibly integrated into the molten hot-melt adhesive composition.

Abstract: The present invention is directed to a low viscosity, high tensile strength adhesive of the hot melt pressure sensitive type composition comprising:(a) from about 15 to about 30% by weight of an A-B-A block or A-B-A-B-A-B- multi-block copolymer containing from about 35 to about 55 parts styrene per 100 parts polymer where polymer blocks A are styrene blocks and polymer blocks B are butadiene or hydrogenated butadiene;(b) 70 to about 85% by weight to a composition tackifying resin; and(c) 0.1 to about 1.5% by weight of a stabilizer. Because the adhesive of the present invention has low viscosity and high tensile strength at both high and low temperatures, the adhesive formulation of the present invention is particularly well-suited to disposable diaper construction, hinge binding in books, PET bottle labeling, and attaching base cups to PET beverage bottles.

Abstract: The present invention is directed to a release package, a preform, of the release package, and a method for releasably packaging a hot-melt pressure sensitive adhesive.

Abstract: The present invention is directed to a rubber based non-pressure sensitive hot melt adhesive composition and disposable diapers of the two or three ply type that are constructed using the adhesive. The rubber based non-pressure sensitive hot melt of the present invention comprises:(A) from about 15% to about 39% of A-B-A or A-B-A-B-A-B multi-block copolymer wherein polymer blocks A are styrene blocks and polymer blocks B are butadiene blocks or hydrogenated butadiene blocks and wherein said polymer blocks A comprise from about 15 parts to about 60 parts per 100 parts polymer;(b) from about 50% to about 75% by weight of one or more compatible tackifying resins having a composite Ring and Ball softening point from about 25.degree. C. to about 50.degree. C.;(c) from about 2.5% to about 10% by weight of one or more waves; and(d) from about 0.1% to about 1.5% by weight of one or more antioxidant type stabilizers.

Abstract: The present invention is directed to both a water dispersible hot melt adhesive composition and to repulpable books bound using the water dispersible adhesive of the present invention. The adhesive composition of the present invention comprises:a) from about 40% to 95% by weight of a water dispersible ionically substituted polyester resin having a molecular weight from about 10,000 to about 20,000 daltons;b) from about 60% to about 5% by weight of one or more compatible plasticizers; andc) from about 0.1% to about 1.5% of one or more compatible stabilizers of the anti-oxidant type.Optionally, the adhesive composition may further include one or more compatible tackifiers in a total amount up to 30% of the weight of the adhesive composition.

Abstract: The present invention relates to an improvement in the alpha-amylase method of hydrolyzing a heated slurry of raw starch into starch fragments, the improvement comprising adding a hydrolytically effective amount of the enzyme, glucoamylase, to the reaction slurry.The present invention further relates to a method for the production of high solids dextrim adhesives from raw starch. In carrying out the invention, an aqueous slurry containing raw starch is subjected to hydrolysis at an elevated temperature by the action of two thermally stable enzymes, alpha-amylase and glucoamylase. Once the viscosity of the reaction slurry is reduced to 1000-2000 centipoise as determined by a Brookfield viscometer at 20 rpm, 100.degree. F., and at 45-55% solids (approximately 2.5 hrs.), the enzymes are then inactivated and the reaction is complete. The rheological properties of the resulting slurry can be adjusted as needed.

Abstract: Temporarily bonded constructions, i.e., credit cards attached to paper stock for mailing to customers, may be prepared utilizing a non-pressure sensitive hot melt adhesive comprising 5-40% of specific A-B.A block copolymers and 95-60% plasticizing oil.