Abstract: Pipe insulation sleeve and adhesive construction therefor, having a reduced amount of stress applied to the adhesive. A flexible foamed elastomeric tubular pipe insulation sleeve has a longitudinally extending slit which enables the sleeve or jacket to be placed around a pipe or portion thereof. An adhesive is applied to opposite walls of the slit, forming an adhesive joint, in order to hold the construction together after the insulation sleeve has been placed around a section of pipe. Stress on the adhesive joint is minimized or reduced in either of two ways. First, the tubular sleeve is formed with a V-shaped slit in which the opposite faces or walls of the slits intersect at an acute angle. In a preferred embodiment, the V is inverted (i.e., the open end of the V faces inwardly) and formed essentially along the minor axis of the elliptical shape which the sleeve assumes over time.

Abstract: The present invention relates to an adhesive closure system. More specifically, this invention relates to an adhesive closure system with an abridged release liner. Initially, the abridged release liner allows partial exposure of the single adhesive layer to achieve a temporary bond. When desired, the release liner can be removed exposing the remainder of the adhesive to achieve a permanent bond. This type of closure system has numerous applications including the closure system for pipe insulation sleeves.

Abstract: The present invention relates to a combination of an A and B adhesive reacting together through a scrim material in a laminated combination, and wherein the B adhesive has great adherence characteristics to a vinyl nitrile foam, and the A adhesive has great adherence characteristics to itself. Thus a laminate of the A adhesive/scrim/B adhesive to each side of a slit in a vinyl nitrile foam tubular insulation, with appropriate release liners covering the outside A adhesive, has been found to be particularly effective. When the release liners are removed and the A adhesives pressed together, a very strong bond is created closing the slit in the vinyl nitrile foam insulation holding the tubular vinyl nitrile foam in place on the tubular member to be insulated. Normally, this is utilized in an air conditioning application with the piping or tubes running from the compressor to the air conditioning unit, and wherein vinyl nitrile foam insulation has proven to be the best insulating material for this application.

Abstract: A sandwich type composite adhesive construction in a simpler form, composed of a central release liner having a permanent adhesive layer on one side thereof and a pressure sensitive adhesive layer on the other side preferably separated therefrom by a release coat or member, and at least one release member on said adhesive layers but in a more complex form containing additional carrier layers or strengthening members including at least one or more support layers between two layers of permanent pressure sensitive adhesive. This adhesive construction provides a product, such as a pipe insulation that has unique properties and is cost effective.

Abstract: An improved shelf life composition useful as adhesives and, especially, pressure sensitive adhesives is made by mixing an acrylic composition with a catalyst of the tin type and a non-reactive silicone composition essentially free of hydroxyl and hydrogens on the silicon atoms and of the formula shown hereinafter.

Abstract: A sandwich type composite adhesive construction in a simpler form, composed of a central release liner having a permanent adhesive layer on one side thereof and a pressure sensitive adhesive layer on the other side preferably separated therefrom by a release coat or member, and at least one release member on said adhesive layers but in a more complex form containing additional carrier layers or strengthening members including at least one or more support layers between two layers of permanent pressure sensitive adhesive. This adhesive construction provides a product, such as a pipe insulation that has unique properties and is cost effective.

Abstract: An improved shelf life composition useful as adhesives and, especially, pressure sensitive adhesives is made by mixing an acrylic composition with a catalyst of the tin type and a non-reactive silicone composition essentially free of hydroxyl and hydrogens on the silicon atoms and of the formula shown hereinafter.

Abstract: Room-temperature-curable silicon-terminated organic sealant compositions having improved cure speeds, and metal and glass primer compositions for use therewith. These sealant compositions comprise a blend of a small amount of N-beta-aminoethyl, gamma - aminopropyl trimethoxy silane with an organosilicon-capped, isocyanate-terminated polyurethane polymer. The composition further comprises a carbon black filler containing less than 0.05% of water and preferably further comprises a moisture-curing catalyst such as dibutyl tin diacetate.