Abstract: Disclosed are nanocomposite oxygen-generating cryogels and their uses in reducing hypoxia in a biological tissue, such as a tumor. Methods of treating cancer with the disclosed cryogels are also provided.

Abstract: Hot melt pressure sensitive adhesives useful in a wide range of end-use applications may be formulated without the use of isoprene-containing polymers using combinations of different styrene/butadiene copolymers including at least one S-B-S triblock copolymer.

Abstract: A hot melt pressure sensitive adhesive (HMPSA) is obtained by combining a linear A-B-A block copolymer, wherein the B component is polyisoprene and the A component is polystyrene (S-I-S), at least one compatible tackifying resin, at least one plasticizer, antioxidant(s) and stabilizer(s) and optionally a wax, wherein the A-B-A block copolymer contains 0 to 10% by weight residual A-B diblock. The HMPSA is suitable as a positioning adhesive for disposable articles like plasters, bandages, sanitary napkins, e.g. feminine napkins, adult incontinent pads or diapers. The HMPSA has a viscosity from 3,500 mPas to 25,000 mPas at 140° C. and exhibits adhesion values from 1.0 to 3.0 N/cm at coat weights of 10 to 25 grams per square meter.

Abstract: A hot melt pressure sensitive adhesive (HMPSA) is obtained by combining a linear A-B-A block copolymer, wherein the B component is polyisoprene and the A component is polystyrene (S-I-S), at least one compatible tackifying resin, at least one plasticizer, antioxidant(s) and stabilizer(s) and optionally a wax, wherein the A-B-A block copolymer contains 0 to 10% by weight residual A-B diblock. The HMPSA is suitable as a positioning adhesive for disposable articles like plasters, bandages, sanitary napkins, e.g. feminine napkins, adult incontinent pads or diapers. The HMPSA has a viscosity from 3,500 mPas to 25,000 mPas at 140° C. and exhibits adhesion values from 1.0 to 3.0 N/cm at coat weights of 10 to 25 grams per square meter.

Abstract: A hotmelt adhesive is provided in the form of a granulate comprising at least one compact outer layer (shell) made up of at least one component which is not pressure sensitive up to 45° C. and which surrounds a core made up of other components of the hotmelt adhesive. The hotmelt adhesive granulates are free flowing even after storage at a high temperature under pressure.

Abstract: The invention relates to a hot-melt contact adhesive, containing at least one unsaturated polymer and a particulate inorganic compound which has an average particle diameter d50 of between 0.05 and 300 &mgr;m. The invention also relates to a method for producing the same and to the use of inorganic particulate compounds of this type for producing a hot-melt contact adhesive. In addition, The invention relates to adhesive objects which are produced using a hot-melt contact adhesive of this type.

Abstract: Hot melt adhesive masses are provided with a tackless surface by a process which comprises the steps of: a) extruding the hot melt adhesive through an appropriate die orifice; b) spraying the surface of the extruded adhesive with a molten film forming low molecular weight polymer or formulated polymeric material, the material being selected so that it will not appreciably detract from the properties of the adhesive composition when remelted therewith; c) heating the surface of the coated adhesive at a temperature and for a period of time sufficient to re-melt the film forming polymer so as to form a continuous coating thereof yet insufficient to appreciably melt the adhesive; and d) cooling the thus coated adhesive mass to a temperature suitable for handling.

Abstract: A non-blocking hot melt adhesive mass is prepared by (a) lining a rigid mold with a plastic film, said film being meltable together with the adhesive composition and blendable into said molten adhesive composition, and said mold being a heat sink or being in contact with a heat sink; (b) pouring molten hot melt adhesive into the lined mold; and (c) allowing the molten hot melt adhesive to solidify.

Abstract: A non-blocking hot melt adhesive mass is packaged by directly pouring or pumping the molten adhesive into a cylindrical plastic tube, the cylindrical tube being in contact with a heat sink. The resultant adhesive package is provided in a readily handable cartridge form which may be produced in a continuous line operation.