Abstract: Bleed-fast, dyed cellulosics particularly absorbent papers have been obtained with a particular class of water-soluble, cationic dyes reacted with a water-soluble aldehyde, preferably formaldehyde, glyoxal or glutaraldehyde. An aqueous printing fluid containing the water-soluble cationic dye and the aldehyde, upon drying, produces a water-resistant dyestuff having improved bleed fastness upon cellulosic fibers.

Abstract: Disclosed is a release coating composition having acrylic functional materials which have been polymerized by electron beam radiation, about 15% to about 85% of the acrylic functional material being provided by one or more aliphatic noncyclic monofunctional acrylates and the remainder of the acrylic functional material being provided by one or more multi-functional acrylates.

Abstract: Disclosed is a unitary or integral laminate-like fibrous web having a first and second surface region and a central core region which has less fiber concentration than the first surface region. The first surface region has a surface disposition of bonding material disposed only in that region to form a strong, abrasion-resistant surface. The central core region has a penetrating disposition of bonding material extending through that region in a fine, spaced-apart pattern occupying less area in the plane of the web than the surface bonding material in the first surface region. The penetrating bonding material in the central core region penetrates entirely through that region and connects the first and second surface regions together by penetrating to at least within a fiber thickness of the web surface to provide abrasion-resistance for that surface region.

Abstract: Disclosed is a superior method of providing a desired surface effect in a release coating on a porous sheet-like substrate by applying a coating of an electron beam radiation curable composition or material directly to one side of a base coated paper web, pressing the coated side of the substrate against a replicative surface having the desired surface effect, irradiating the coating with electron beam radiation through the substrate to cure the coating at least sufficiently to permanently adhere it to the substrate and to enable it to be removed with the substrate from the replicative surface securely attached to the substrate and with the replicated surface effect in the coating bein maintained, the irradiation step taking place after sufficient time has passed to cause the coating to penetrate into the coated paper and to be in continuous intimate contact with the coated paper. Also disclosed is the apparatus for carrying out the method and the resulting product.

Abstract: The method of autogenously bonding a nonwoven web formed predominantly of thermoplastic fibers is characterized by the steps of directing heat into the web from only one surface thereof to preheat the web, and then directing the preheated web through a bonding nip formed between opposed rolls, one of said rolls being hotter than the other roll, being capable of heating the web surface it engages to a temperature above the melt point of the thermoplastic fibers and being positioned to engage the surface of the web opposite the one into which heat was directed during the preheating operation; said webs being preheated by means completely independent of the opposed rolls that form the bonding nip, and most preferably by infrared panels. The nonwoven product formed in accordance with this method also forms a part of the instant invention.

Abstract: A pan-type lighting fixture for mounting in association with an outlet box (3) in a ceiling is characterized by a heat-dissipating base (12) having a generally vertical sidewall section (18) and a generally horizontal planar wall (24) intermediate opposed ends (20 & 22) of the sidewall section. The horizontal wall divides the base into upper and lower compartments (26 & 28) and sockets (31) for receiving incandescent lamps are secured through mounting means (30) to the lower surface of the intermediate wall (24). A layer of insulating material (14) is disposed in the lower compartment of the base, and a layer of insulating material (15) is disposed in the upper compartment of the base. A mounting stud (13) includes a heat-insulating threaded plastic stem (38) passing through a central opening (39) in the horizontal wall of the base for connection with a threaded opening (40) associated with the outlet box. The lighting fixture complies with the UL temperature limit of 60.degree. C.

Abstract: An apparatus for testing the permeability of porous web materials. The porous web 12 is placed against a surface of a test head 10 of the apparatus. The test head 10 contains at least one aperture 28 and a vacuum source 87 connected to the test head 10 causes air to be drawn through the web 12 and then through the aperture 28. The test head 10 also includes at least one static port 32 that communicates with the aperture 28. The static port 32 is located very close to the web 12 and measures the static pressure within the aperture 28 before it leaves the aperture 28. A pressure transducer 46 is connected to the static port 32 and provides a measurement of the pressure drop across the web 12. If the volumetric flow rate of air through the web 12 is kept constant, the pressure transducer 46 output 52 is representative of the permeability of the web 12.

Abstract: Disclosed is a release coating provided by a coating composition having an acrylic functional component which has been polymerized by electron beam radiation. In a preferred embodiment the coating composition does not contain polysiloxane. In another preferred embodiment some of the acrylic functional component has one acrylic group per molecule and some has three or more acrylic groups per molecule before polymerization.

Abstract: A three component adhesive is used for a nonwoven web in combination with a water based lotion containing borate ions. The adhesively bonded web has substantial tensile strength while saturated with the lotion for extended periods of time (e.g., months) and is water dispersible when exposed to a large volume of water. The three component adhesive system provides the tensile strength for the web during prolonged exposure to the water based lotion even under extreme temperature conditions. The components of the adhesive composition applied to the web are polyvinyl alcohol, a non-self-cross-linking, thermosetting, polymer emulsion and a self-cross-linking thermosetting polymer emulsion. An organic acid capable of complexing with borate, such as .alpha.-hydroxy acids or o-aromatic hydroxy acids, when in combination with borate ions in the lotion produces a synergistic effect upon the PVA adhesive in the web.

Abstract: Disclosed is a coated sheet material comprising a release medium having thereon a gluable coating for use in making a decorative heat-and-pressure consolidated laminate. The gluable coating is transferred during the consolidation step from the release medium to the back side of the laminate, and the laminate can then be glued to a reinforcing substrate with conventional glues and without sanding the back of the laminate. The transferable gluable coating comprises a linear copolymer of (A) maleic anhydride or maleic acid or maleic acid salt and (B) ethylene or a vinyl monomer having a side chain of an aliphatic group with up to four carbon atoms or an alkoxy group with up to four carbon atoms.

Abstract: Disclosed is a superior method of providing a desired surface effect in a release coating on a substrate by providing a coating of an electron beam radiation curable composition or material between one side of the substrate and a replicative surface having the desired surface effect, and irradiating the coating with electron beam radiation through the substrate to cure the coating at least sufficiently to permanently adhere it to the substrate and to enable it to be removed with the substrate from the replicative surface. Also disclosed is the apparatus for carrying out the method and the resulting product.

Abstract: Disclosed is an improved pressure-sensitive adhesive composition comprising an unvulcanized elastomer component comprising at least one block copolymer of styrene and either isoprene or butadiene with a polystyrene block on at least one end of the block copolymer, a tackifying resin component compatible with the elastomer component, a plasticizer component, and a modifier component of unvulcanized cis-1,4-polybutadiene. Also disclosed is the pressure-sensitive adhesive structure comprising a web of material, such as paper, upon which is coated a layer of the above-described composition.

Abstract: Disclosed is a release sheet having on at least one of its outer surfaces a dried and cured coating composition comprising a release agent, a cross-linkable thermoplastic resin, and a water dispersible organic compound containing polyoxyethylene, polyoxypropylene, or a block copolymer of polyoxyethylene and polyoxypropylene.

Abstract: Aqueous coating compositions for use in the preparation of decorative sheets employed in heat and pressure consolidated decorative laminates, comprising a pigment, a pigment binder, and a dispersion of a urea-formaldehyde resin condensate or a melamine-formaldehyde resin condensate; such coating compositions comprising, as an additional component in the preferred embodiment, a thermoplastic resin which is non-film-forming at drying temperatures.

Abstract: Sodium sulfate crystals, also known as salt cake, are obtained as a side stream in the manufacture of chlorine dioxide by the reduction of sodium chlorate with chloride ions in an aqueous, acidic medium containing sulfate ions. The sodium sulfate crystals are contained in a mother liquor saturated with sodium sulfate and contaminated with chloride ions. The process provided by the present invention purifies the salt cake crystals by separating the crystals from the mother liquor without evaporation of the mother liquor until a critical dryness level is achieved and then the remaining mother liquor is evaporated to result in purified salt cake crystals having substantially reduced chloride ion content.

Abstract: Decorative, heat-and-pressure consolidated laminates comprising a decorative sheet impregnated with a thermosetting resin which does not undergo color deterioration during the consolidation step and a backing sheet, the outer surface of which has been coated prior to consolidation with a composition containing an inert filler, a non-thermoplastic adhesive, and a water-soluble thermosetting resin selected from the class consisting of urea-formaldehyde resin condensates and melamine-formaldehyde resin condensates; and processes for making such laminates.

Abstract: Disclosed is a method of detecting a cured silicone coating applied to a paper substrate or the like in web form, comprising adding an effective amount of a fluorescent pigment to the silicone coating formulation to be applied to the substrate, applying the coating to the substrate, curing the silicone coating, scanning the coated surface of the substrate with a UV light source, and detecting the fluorescence of the coating. Also disclosed is the coated paper product with which the method of the invention can be employed.