The invention relates to foam materials that are resistant to high temperatures, to the production of same from aromatic polyisocyanates and polyepoxides, and to the use of said foam materials.

The present disclosure relates to a pressure sensitive adhesive foam comprising a rubber-based elastomeric material, at least one hydrocarbon tackifier and a crosslinking additive selected from the group of multifunctional (meth)acrylate compounds. The present disclosure also relates to a method of manufacturing such a pressure sensitive adhesive foam and uses thereof.

The present invention relates to a method for producing a flexible adhesive tape for structural bonding, more particularly for clearance compensation, of diverse materials, such as metal, wood, glass and/or plastic, for example.

The present application relates to a thermally expandable composition containing at least one peroxide cross-linking polymer, at least one peroxide and at least one endothermic, chemical blowing agent, the blowing agent comprising at least one solid, optionally functionalized, polycarboxylic acid or the salt thereof and at least one urea derivative according to the formula (I) as defined herein; as well as shaped bodies containing the composition and to a method for sealing and filling voids in components, for strengthening or reinforcing components, in particular hollow components, and for bonding mobile components using shaped bodies of this type.

A method for sealing a substrate having one or a number of electrically conductive surface regions, including the (i) arranging of a sealing membrane, having a plastic layer and an outer adhesive layer made of a melt adhesive, on the substrate, wherein the adhesive layer is facing towards the substrate, (ii) the positioning of an induction heating device over the sealing membrane, and (iii) heating the melt adhesive for the fusion or partial melting thereof by means of the inductive heating of the electrically conductive surface regions with the induction heating device, in order to adhere the sealing membrane to the substrate after cooling. The method facilitates the sealing of substrates with sealing membranes. Same is suitable, in particular, for sealing floors or ceilings or parts thereof.

A tetrafluoroethylene (TFE) copolymer film having a first endotherm between about 50 C. and about 300 C., a second endotherm between about 320 C. and about 350 C., and a third endotherm between about 350 C. and about 400 C. is provided. In exemplary embodiments, the third endotherm is approximately 380 C. In some embodiments, the second endotherm is between about 320 C. and about 330 C. or between about 330 C. and about 350 C. TFE copolymer films have a methane permeability less than about 20 g*micron/cm.sup.2/min. In addition, the dense articles have a void volume of less than about 20%. Methods for dense articles from core shell tetrafluoroethylene copolymers are also provided. The dense articles exhibit improved physical and mechanical properties such as adhesion and barrier properties.

Provided is a package comprising: a space to store contents; and an opening by which the space and an outside communicate, wherein the opening is repeatedly openable and sealable by a self-adhesive (E) that is made by cross-linking a resin composition (C) containing a (meth)acrylic acid ester copolymer resin (A), and a crosslinking agent (B), the package being repeatedly sealable after opened first time.

In an embodiment, an adhesive sheet has an expandable adhesive layer 2 on one side or both sides of a base 1, wherein the expandable adhesive layer 2 contains an epoxy resin including a polyfunctional epoxy resin, a phenol resin as a curing agent, an imidazole-based compound as a curing catalyst, and a temperature-sensitive foaming agent. The adhesive sheet has properties in good balance, such as fast curability, heat resistance, and adhesiveness, and also excellent properties such as thermal conductivity attributed to a good filling property.

The present invention relates to self-foaming hot melt adhesive compositions and methods of making and using the same. Self-foaming hot melt adhesive compositions are formed by admixing a dispersion concentrate including a chemical blowing agent and a compatible carrier (liquid or molten) with a molten base hot melt adhesive composition at a temperature below the decomposition temperature of the chemical blowing agent. The resolidified material is processed through a device that heats the material above the decomposition temperature of the chemical agent and cools it below such temperature before being dispensed. The device preferably includes sensors and a controller configured to prevent the material from accumulating an adverse thermal history during processing.

A thermally expandable rubber composition, including at least one solid rubber, at least one processing oil, at least one vulcanization system, at least one filler G, 1.6-2.8 mM of 4,4-oxybis(benzenesulfonyl hydrazide) and 7.0-12.5 mM of an aliphatic urea-derivative with a molecular weight of less than 250 g/mol, both based on 100 g of the rubber composition.