Patent classifications
C09J175/00
Adhesive based on a special polyurethaneurea with adjustable bonding force, and production and use thereof
The present invention relates to an adhesive producible from an aqueous polyurethaneurea dispersion comprising an amorphous polyurethaneurea (V1) obtainable by reacting at least A) one aliphatic, cycloaliphatic or araliphatic polyisocyanate component having an average isocyanate functionality of 1.8 and 2.6, B) one polyetherpolyol component, C) one amino-functional chain extender component having at least 2 isocyanate-reactive amino groups, containing at least one amino-functional compound C1) that does not have any ionic or ionogenic groups and/or an amino-functional compound C2) that has ionic or ionogenic groups, D) optionally further hydrophilizing components different than C2), E) optionally hydroxy-functional compounds having a molecular weight of 62 to 399 mol/g, F) optionally further polymeric polyols that are different than B), G) optionally one compound having exactly one isocyanate-reactive group or one compound having more than one isocyanate-reactive group, where only one of the isocyanate-reactive groups reacts with the isocyanate groups present in the reaction mixture under the reaction conditions chosen, and H) optionally one aliphatic, cycloaliphatic or araliphatic polyisocyanate component having an average isocyanate functionality of >2.6 and 4, where components B) and F) together contain 30% by weight of component F), based on the total mass of components B) and F) and a hydrophilic polyisocyanate (V2) preparable at least from the components of I) an aliphatic, cycloaliphatic or araliphatic polyisocyanate component having an average isocyanate functionality of preferably 2.0 and 3.6, J) a polymeric, hydrophilic and monofunctional polyalkylene oxide component, K) optionally further hydrophilizing components different than J), L) optionally admixtures and auxiliaries. The invention likewise provides an adhesive layer and a product including the adhesive, a process for producing the adhesive layer, a specific polyurethaneurea, and the use of the adhesive and a kit having components (V1) and (V2).
One-component epoxy-modified polyurethane and/or polyurea adhesives having high elongation and excellent thermal stability, and assembly processes using same
A one-component epoxy-modified polyurethane and/or urea adhesive includes very high levels of reactive urethane group- and/or urea group-containing tougheners, an epoxy resin and epoxy hardener. These adhesives are formulated to cure at high temperatures and surprisingly provide high elongations, excellent thermal stability and good adhesive properties.
CRASH DURABLE EPOXY ADHESIVE HAVING IMPROVED LOW-TEMPERATURE IMPACT RESISTANCE
A one component epoxy adhesive composition is comprised of an epoxy resin, a polyurethane based toughener, an epoxy capped toughener comprised of a polymer backbone capped with an epoxy, wherein the polymer backbone is at least partially immiscible in the epoxy resin; and an epoxy curing agent. The one component adhesive composition may have improved impact resistance at low temperatures, such as 40 C. or less. The epoxy based toughener may be formed by reacting the hydroxyls of a polyol with a stoichiometric excess of cyclic anhydride to form a carboxylic acid capped polymer. The carboxylic acid capped polymer is then reacted with a stoichiometric excess of an epoxy resin having at least two epoxides to form the epoxy capped toughener having epoxide end groups.
METHOD FOR BONDING RUBBER AND ADHESIVE FOR BONDING RUBBER
The invention relates to a high-strength and permanently elastic curable adhesive for bonding at least two surfaces, of which at least one surface is a surface of a permanently elastic plastic wherein the adhesive is an adhesive that cures in at least two different hardening mechanisms, wherein the first hardening mechanism comprises a chemical reaction to form a chemical bond including a sulphur atom, and the second hardening mechanism comprises the formation of crystalline structures from amorphous polymers. The invention also relates to a method for high-strength and permanently elastic bonding of at least two surfaces to one another, of which at least one surface is that of a permanently elastic plastic, by means of such an adhesive, said method comprising the steps of: applying the adhesive to at least a first of the surfaces to be connected, ensuring conditions under which at least the first hardening mechanism of the adhesive can take place, bringing the first surface into contact with the second surface, and ensuring conditions under which the second hardening mechanism of the adhesive can take place.
Adhesive, laminate, cell case packaging, cell, high-alkali solution packaging, alcohol-containing solution packaging, and package
An adhesive includes a modified olefin polymer (A) allowing a polymer of a C2 to C20 -olefin having a structural unit derived from a C4 to C20 -olefin to be modified with a monomer having a functional group capable of reacting with an isocyanate group and having a heat of fusion measured in accordance with JIS K7122 of 0 J/g or more and 50 J/g or less and a polyisocyanate (B).
CYANATE ESTER BASED ADHESIVE AND METHOD FOR PRODUCING CYANATE ESTER BASED ADHESIVE
A cyanate ester based adhesive comprising component A which has at least one cyanate ester with at least two OCN groups, and component B which comprises at least one catalyst for the trimerisation reaction of OCN groups to form a triazine ring. The catalyst is retained releasably on a carrier, particularly a pyrogenic silica.
CYANATE ESTER BASED ADHESIVE AND METHOD FOR PRODUCING CYANATE ESTER BASED ADHESIVE
A cyanate ester based adhesive comprising component A which has at least one cyanate ester with at least two OCN groups, and component B which comprises at least one catalyst for the trimerisation reaction of OCN groups to form a triazine ring. The catalyst is retained releasably on a carrier, particularly a pyrogenic silica.
METHOD FOR PRODUCING BLOCK MOUNTINGS AND APPLICATION DEVICE
A method for producing block mountings and an associated application device. The method for producing block mountings of windows (1) comprises the following steps: providing a frame made up of frame profiles (2) with one or more panes (3) arranged therein, wherein a gap (4) can be formed between at least one frame profile (2) and the one or more panes (3), fitting one or more, in particular adaptable, coverings (7) for covering an application region. The application region is delimited by the one or more coverings (7) in the peripheral direction, the frame profile (2) and the one or more panes (3). The one or more coverings has or have at least one opening, and the curable polymer (6) is introduced through the opening of the one or more coverings into the application region.
METHOD FOR PRODUCING BLOCK MOUNTINGS AND APPLICATION DEVICE
A method for producing block mountings and an associated application device. The method for producing block mountings of windows (1) comprises the following steps: providing a frame made up of frame profiles (2) with one or more panes (3) arranged therein, wherein a gap (4) can be formed between at least one frame profile (2) and the one or more panes (3), fitting one or more, in particular adaptable, coverings (7) for covering an application region. The application region is delimited by the one or more coverings (7) in the peripheral direction, the frame profile (2) and the one or more panes (3). The one or more coverings has or have at least one opening, and the curable polymer (6) is introduced through the opening of the one or more coverings into the application region.
DIPPING BATH COMPOSITIONS FOR TREATING REINFORCING INSERTS
The present invention relates to an aqueous, solids-containing dipping bath composition for treating reinforcing inserts for rubber products comprising the following components or consisting of these components, (A) at least one blocked MDI mixture, the MDI mixture comprising MDI oligomers of formula (I), n being a whole number from 1 to 8, and MDI monomers; (B) at least one latex; (C) at least one compound selected from the group consisting of polyacrylates, lignin derivatives and mixtures hereof; and (D) possibly at least one additive; the dipping bath composition being essentially free of epoxides, and the dipping bath composition being essentially free of resorcinol, formaldehyde and the reaction products thereof.
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