Abstract: A cover for use in binding sheets without use of a machine comprises a sheet of cover with a central fold dividing the cover to a front cover portion and a back portion and a strip of pressure-sensitive adhesive along the fold has a moveable liner.

Abstract: A composition and method for the repair of an osseous defect comprising introducing into said defect a phosphophoryn calcium salt, preferably in combination with a matrix material such as type I collagen.

Abstract: An electrically conductive strap having a distal end adapted to be secured to an object and having a proximate end adapted to be coupled to electrical ground. The strap has an elongate strip of electrically conductive material being flexible in at least one dimension. The material has an object contacting portion at the distal end, a lead portion between the distal end of the proximate end and a ground contacting portion at the proximate end. An adhesive securing mechanism is provided at the object contacting portion of the elongate strip of electrically conductive material to secure the material in electrical contact with the object. A ground contacting mechanism is provided at the ground contacting portion of the material to be able to couple the electrically conductive strap to electrical ground.

Abstract: A thread-like continuous retroreflective fiber and method of making same, comprising the steps of laminating a thin film of retroreflective material to a supporting polyester film, and then slitting the laminate to form narrow strips of retroreflective material having sufficient strength to be combined with other fibers to form a composite yarn having retroreflective characteristics, which composite yarn may then be woven, knitted, or spun to provide a fabric having retroreflective characteristics.

Abstract: A method for minimizing false alarms and background electronic noise in an electronic article surveillance system operated in the vicinity of substantially closed electrical loops such as formed by metal door and window frames. If the conductance of such loops is variable, electric currents induced in such loops by electromagnetic fields produced by the system have been found to be discontinuous, and can both produce a false alarm and raise the background noise level. The method comprises connecting metal straps across all joints in such loops to ensure permanent, reliable electrical connections at all such joints, thus providing greatly reduced variations in conductance around the loop.

Abstract: A notepaper dispenser for holding and dispensing sheets singly from a pad of notepaper with the sheets held in the pad by a narrow band of adhesive on one side of each sheet and adjacent one end is disclosed which has a support surface for the pad, a clamp for holding the bottom sheet in an area spaced from the band of adhesive in fixed position in relationship to the support surface and an abutment for engaging an edge of the pad opposite the end of the sheets joined together by the adhesive for restricting peeling forces resulting from peeling the top sheet being transferred to the bottom sheet of the pad.

Abstract: Pressure sensitive adhesives comprise blends of polyamides with polyacrylates. The resultant blends are particularly suited for use in pressure sensitive adhesive tapes. Films, articles, and coated articles containing these pressure sensitive adhesives are also disclosed.

Abstract: A plurality of blades are supported for initially severing a continuous tubular core into a plurality of specialty cores and subsequently slitting a continuous sheet of paper as it is drawn from a bulk roll and wound about the specialty cores. Each blade is replaceably carried by an assembly which is selectively positionable along a bar to provide specialty rolls of coiled paper in predetermined widths. A mandrel upon which the core is carried is provided with a plurality of spaced annular grooves for receiving the cutting edge of each blade.

Abstract: A cartridge including a cylindrical hub attached to a housing, which hub has a central opening and a slot extending axially across the width of the hub and communicating with the central opening, and an endless length of magnetic tape having a major portion wrapped about the hub to form a coil and a minor portion extending from the innermost wrap of the coil, through the slot and around the side surface of the coil to the outermost wrap of the coil. Means on the housing define a tape path for the minor tape portion including a spring biased guide pin that is moved by changing tension in the minor portion, and is connected to a cam which upon movement of the guide pin will move a portion of the hub to adjust the length of and thereby the tension in the minor tape portion.

Abstract: A light-sensitive silver halide element for radiographic use with intensifying screens has coated on at least one side of a transparent base at least a spectrally sensitized silver halide emulsion layer and, coated between the base and a silver halide emulsion layer, a hydrophilic colloid layer containing a water-soluble acid dye capable of being decolorized during the photographic processing, said dye having its absorption in a region of the electromagnetic spectrum corresponding to the spectral sensitivity of the silver halide emulsion, associated with a basic polymeric mordant which comprises repeating units of formula: ##STR1## wherein R.sub.1 is hydrogen or a methyl group, A is a --COO-- or --COO--alkylene group, R.sub.2 is hydrogen or a lower alkyl group and X is an anion.The invention allows the use of low coverage weights of silver halide light-sensitive elements and provides x-ray images with a favorable image quality and sensitivity ratio.

Abstract: A manufacture for orthodontic bracket application and removal, employing an orthodontic bracket adhesive containing a non-toxic, inorganic filler which is insoluble in mouth fluids and has a Mohs hardness less than about 4.5, together with an abrasive for removal of the adhesive. The abrasive is a non-toxic, inorganic material having a Mohs hardness greater than that of the adhesive filler but less than about 5.

Abstract: A biomedical electrode comprising a backing, a biocompatible pressure sensitive adhesive (PSA), a bonding sheet, an electrical conductor, and an electrolyte composition is shown. The biocompatible PSA coats one surface of the backing. The bonding sheet has first and second faces smaller in surface area then the backing. The first face is bonded to the biocompatible PSA. The electrical conductor has a top face with first and second surfaces. The first surface spans a portion of the bonding sheet and the second surface adheres to the biocompatible PSA. The electrical conductor has a bottom face with a third surface opposing the first surface and a fourth surface opposing the second surface. In electrical contact with the third surface is the electrolyte composition. The electrolyte composition is also, adhered to a portion of bonding sheet. A continuous high speed and low cost method of manufacture is also shown.

Abstract: A bulk polymerization process for free radical polymerization of vinyl monomers and alkenyl azlactones or macromolecular monomers (e.g. functionalized polystyrene), in a wiped surface reactor is disclosed. Referring to FIG. 1; monomer streams 5 (after purification and silica gel column 2), and 7 and macromer or azlactone 8 are combined with free radical initiator 9 to form a premix 16. Pump 18 transfers the premix stream 22 through static mixer 24 into a wiped surface reactor 27. The reactor can be a counter rotating twin screw extruder which produces polymer stream 36 without the need of solvent and using residence times much shorter than prior art solution or emulsion processes.Some unique pressure sensitive adhesive acrylate polymers have been produced. They are believed to have a relatively high degree of branching. The bulk polymerization process permits the manufacture of pressure sensitive adhesive articles by extruding directly from the twin screw extruder onto a substrate.

Abstract: A skin adhesive coated sheet material is provided which is coated with a polymer that exhibits an enhanced level of initial adhesion when applied to skin but resists objectionable adhesion build up over time. The skin adhesives are comprised of a macromer reinforced acrylate copolymer which has a creep compliance value at least about 1.2.times.10.sup.-5 cm.sup.2 /dyne.

Abstract: A novel, one-pot procedure for the preparation of N-acryloyl-.alpha.-amino acids involves the steps of:(i) reacting a ketone, an ammonium salt, and a cyanide salt in water, optionally in the presence of ammonium hydroxide and a co-solvent, to form an aminonitrile;(ii) acryloylating the aminonitrile in aqueous media to afford an acrylamidonitrile; and(iii) hydrolyzing with aqueous acid the acrylamidonitrile to provide the N-acryloyl-.alpha.-amino acid.

Abstract: Flexible magnetic recording media such as videotapes based on ferromagnetic oxide particles can provide high carrier-to-noise ratios previously available only with metal powder tapes when the recording layer has a high loading (at least 74% by weight) of oxide particles which have a high surface area (at least 40 m.sup.2 /g) and includes free monobasic fatty acid comprising more than 1.5% by weight of the ferromagnetic oxide particles. The free fatty acid provides a coefficient of friction not exceeding 0.3. A preferred monobasic fatty acid is myristic acid. By incorporating into the binder a lubricant-adsorption inhibitor such as citric acid, a greater proportion of the fatty acid remains free.

Abstract: This invention provides pressure sensitive adhesive (PSA) compositions comprising a copolymer having a vinyl polymeric backbone having grafted thereto polysiloxane moieties. The compositions may contain other ingredients such as tackifier and/or plasticizer. An exposed surface of the PSA composition is initially positionable on a substrate to which it will be adhered but, once adhered, builds adhesion to form a strong bond. The PSA compositions may be used alone or in blends with unsiliconized PSA compositions. The invention also provides sheet materials coated with the PSA composition such as tape, labels, etc.