Abstract:
An adhesive resin composition comprising, based on the total weight of the composition, a first resin component having one or more glass transition temperatures of about −15 to about 50° C.; optionally, up to about 49 weight percent of a second resin component having one or more glass transition temperatures greater than about 100° C.; and up to about 50 weight percent of a particulate inorganic filler; wherein a tan δ value of the adhesive resin composition is greater than about 0.2 over a temperature range of about −15 to about 50° C. when measured at a frequency of 1 Hz. The adhesive resin compostions are of particular utility in suspension assemblies.
Abstract:
A pressure sensitive adhesive comprising an aqueous dispersion of a polymer, said dispersion comprising, besides the polymer, silicon compounds selected from polymeric silicates, water-soluble alkali metal silicates (waterglass), silanes, and silicones obtainable from the silanes by condensation.
Abstract:
Hot-curing structural adhesives with multiphase polymer morphology, wherein the binder matrix of the cured chemically reactive adhesive displays (a) a continuous phase containing a polymer P1 having a glass transition temperature of over 100° C.; (b) a heterodisperse phase consisting of individual continuous domains of a thermoplastic or elastomeric polymer P2 having a glass transition temperature of below −30° C. and an average particle size of between 0.5 and 50 μm, which itself contains separate phases of another thermoplastic or elastomeric polymer P3 having a glass transition temperature of below −30° C. and a size of between 1 nm and 100 nm, parts of which can be in aggregated form as larger agglomerates; and (c) another heterodisperse phase embedded in the continuous phase and consisting of domains of the polymer P3, at least parts of which have an average particle size of between 1 nm and 50 nm, wherein P3 is not identical to P2; are suitable as high-strength, impact resistant structural adhesives, for internal stiffeners for cavities in automobile construction and for the production of reinforcing coatings for thin-wall sheet components.
Abstract:
A fluid-absorbing, composite material that is pressure sensitive adhesive and which is made of a mixture comprising a continuous phase formed from a pressure sensitive adhesive matrix, and a discontinuous phase substantially comprised of one or more natural or synthetically derived water soluble and/or water insoluble absorbents, characterised in that the continuous phase contains trans-polyoctenamer polymer, which material serves to elevate the shear strength of the composite. Because of its low melting point, compositions containing trans-polyoctenamer polymer are very easy to process. Formulations can be prepared that have only weakly adhesive properties, also formulations that are suitable as primary dressings for various hard-to-heal and chronic wounds. The pressure sensitive adhesive can also be combined with a non-adhesive, water impervious film, or other backing material, and can be used as the protective adhesive skin barrier component of ostomy pouches.
Abstract:
The invention is directed toward a hot melt adhesive composition and processes for producing the same. The hot melt adhesive composition comprises: at least one non-thermoplastic hydrocarbon elastomer; at least one thermoplastic additive, wherein a ratio of melt viscosity of the at least one thermoplastic additive to melt viscosity of the at least one non-thermoplastic hydrocarbon elastomer is less than about 1:20 when measured at a shear rate of 100 seconds−1 at a particular hot melt processing temperature; and at least one modifier.
Abstract:
The adhesive composition (34) in accordance with the invention for the hot bonding of substrates (32, 33), polymers or metals, comprises at least one polymer material, at least one plasticiser and wetting agent, and, possibly, at least one solvent, and its operating temperature is lower than the temperature at which the substrates (32, 33) degrade and lower than the melting temperature of polymer material. Application for making aeronautical quality sandwich structures, particularly for helicopter rotors.
Abstract:
The present invention discloses a water-dispersion type pressure-sensitive adhesive composition, a method for producing the same, and a pressure-sensitive adhesive product employng the same. With the present invention, the hydrophilic nature of dispersant (C) can be nullified by reacting a compound (B), containing a metal having a valence of at least two or having a specific functional group having reactivity, with the functional groups of dispersant (C), with the result that while being a water dispersion type pressure-sensitive adhesive composition, it displays excellent water resistance properties on a par with pressure-sensitive adhesives made from solvent type pressure-sensitive adhesive compositions.
Abstract:
A method for producing a fast drying high solids adhesive wherein a water based polymer emulsion (latex) is modified with unemulsified elasticizing oils and reinforcing-tackifying resins to produce a stable emulsion of polymer, oil and resin without the use of additional emulsifiers or volatile organic solvents. When packaged in pressurizable canisters along with a suitable propellant, the adhesive may be sprayed through a suitable nozzle and deposited in a thin layer to form an adhesive film which has excellent bonding characteristics for many laminates such as fabric or textiles, wood, plastics, metals and rubber, and for adhering flooring materials such as carpet, linoleum, tiles and artificial grass to a variety of substrates.
Abstract:
The electrically conductive, barium sulfate-containing composition consists of BaSO.sub.4 particles having a surface area of from 0.1 to 150 m.sup.2 /g. The BaSO.sub.4 particles each are provided with a SnO.sub.2 coating having a thickness of 2 to 80 nm and containing from 1 to 15% by weight of the Sb.sub.2 O.sub.3. The electrically conductive, barium sulfate-containing composition is made by a method including the steps of adding a first acidic solution containing 1 to 95% by weight SnCl.sub.4 and a basic solution to an aqueous dispersion from 50 to 800 g/l of BaSO.sub.4 to make a basic mixture having a pH from 9 to 15; then adding an acid to the basic mixture to form an acidic mixture having a pH from 4 to 1; then adding a second acid solution containing 0.5 to 60% by weight of SbCl.sub.3 to the acidic mixture; separating the electrically conductive, barium sulfate-containing composition from the acidic mixture; and drying and igniting the separated electrically conductive, barium sulfate-containing composition at 300 to 800.degree. C.