Abstract: A support matrix is described where a porous inorganic support is impregnated with an amine-bearing polymer whose backbone is polar and hydrophilic. The amino groups are cross-linked and themselves bear pendant aldehyde groups kept well away from the surface of the polymer-coated support.

Abstract: Pressure-sensitive adhesive tape, the adhesive layer of which is a copolymer of alkyl acrylate such as isooctyl acrylate and acid such as acrylic acid which differs from the prior art by including a small amount of lower-alkoxylated amino formaldehyde condensate as a latent crosslinking agent. The adhesive does not become crosslinked until it is heated. After the tape has been applied and heated to crosslink the adhesive, it exhibits excellent resistance to common organic solvents and also exceptional resistance to shear failure, especially at elevated temperatures. The adhesive has excellent electrical-insulating properties.

Abstract: A length composite member comprising a metallic sheet and a rigid synthetic resin coating is bent to be arcuate in transversal section. The thickness of the metallic sheet of such composite member as bent to be arcuate in transversal section is extremely small as compared with the radius of curvature of the desired arcuate sectional curve. A plurality of small arcuate sectional bent portions in transversal section are formed distributed in the transversal or width direction of the metallic sheet. The centers of the respective curvatures of these plurality of small arcuate sectional bent portions in transversal section are selected to exist on the same side as that of the center of curvature of the composite member bent to be arcuate. The metallic sheet is generally bent in advance to be arcuate in transversal section and both main surfaces of the metallic sheet thus bent are coated with rigid synthetic resin.

Abstract: A high pressure laminate (HPL) is disclosed for use on an access floor panel. The HPL is comprised of a rigid, moisture, impervious melamine plastic layer laminated under high pressure and heat to a substrate layer comprised of a resin paper element of multiple sheets of phenolic resin impregnated kraft paper. This resin paper element has at least one groove in it, wherein material has been removed to a depth sufficient to sever enough paper sheet grain lines of the resin paper element so that, after the HPL has been adhesively bonded to the HPL receiving surface of an access floor panel, vertical expansion or contraction of the resin paper element will note elongate the bond line in the area from the edge of the HPL to the groove that creates the pivot or hinge line. An access floor panel is also disclosed.

Abstract: An improved lining sheet product for lining tanks, hoppers, chutes and the like includes a castable elastomeric sheet, an expanded-metal meshwork sheet cast within the elastomeric sheet, and bolt-type fastening members mounted at spaced-apart locations within the meshwork sheet. The fastening members, preferably flat countersunk elevator bolts, include head portions which fixedly seat within the meshes of the meshwork so that the strands of the meshwork act against the heads to prevent rotation and so that elastomer covers and protects the head from chemical attack or mechanical abrasion. Preferably, the fastening members include cap portions integral of the heads of area sufficient to span several of the strands of the meshwork to prevent the fastening members from being pulled through the sheet when tension is applied, as when nuts are tightened onto the shanks of the bolts.

Abstract: An elastic leg disposable diaper is provided which, when worn, forms an absorbent pocket with planar sides in the crotch area. The pocket has flex regions in the crotch area of the diaper which define a bottom crotch profile and elastic edges which encircle the leg of the baby and semirigid absorbent-containing planar sides extending upward from the flex regions to the elastic edges. The diaper at its lowest profile in the crotch area is either planer or upwardly arcuate when the baby is standing. The stiffness of the sides is generally correlative of a Taber stiffness value of at least seven gm-cms for the absorbent material located thereon.

Abstract: A composite hair simulating fiber with characteristics similar to human hair which includes a metallic core member coated with a plastic material to form a fine strand, the core member and/or the coating member being flattened to provide a strand which will have a curling characteristic with a self-retaining form which can be readily styled by an operator to provide various curves and convolutions as desired similar to that capable in human hair but with greater extension and retention properties.