摘要:
The present disclosure relates to a curable precursor of an adhesive composition, the curable precursor comprising a first part and a second part, wherein the first part comprises: (a) a radically (co) polymerizable (meth) acrylate-based component comprising (i) C1-C 32 (meth) acrylic acid ester monomers; and wherein the second part comprises (b) an initiator; and (c) a vinyl aromatic compound. The present disclosure further relates to a process for making a cured composition from said curable precursor and to the use of said curable precursor for adhesive applications and/or for thermal management applications in the automotive industry.
摘要:
Pressure sensitive adhesives having high shear failure temperatures are made by reacting a curable pressure sensitive adhesive composition comprising: a. a pre-polymer having a structure according to Formula (I) R1—[Polymer]—R2, wherein the [Polymer] is a linear or branched polymer backbone derived from the reaction of farnesene and at least one other monomer; and R1 is a (C1-C12) alkyl group or R2, and R2 comprises a (meth)acrylate group having a structure according to Formula (II), wherein Z is selected from the group consisting of hydrogen and methyl; b. at least one functional (meth)acrylate monomer; and c. at least one photo-initiator.
摘要:
An anaerobically curable composition in dry to touch form formed from: a) a liquid anaerobically curable component; b) a thermoplastic polyurethane ("TPU") component in an amount of about 10% to about 35%, for example from about 20% to about 30%, by weight based on the total weight of the composition; and c) a curing component for curing the liquid anaerobically curable component.
摘要:
An aqueous adhesive layer comprising a first and a second binder, characterized in that the first binder includes a polyurethane-acrylate hybrid polymer wherein the polyurethane part has a glass transition temperature (Tg) between -75°C and 20°C and the acrylate part has a Tg between 65°C and 200°C, and the second binder is an aliphatic polyurethane.
摘要:
Curable compositions include a urethane (meth)acrylate oligomer having a number- average molecular weight of at least 6000 g/mol; at least one mono(meth)acrylate monomer; a multifunctional crosslinking monomer chosen from acrylate monomers, methacrylate monomers, or combinations thereof; and an ethylene–vinyl acetate grafted terpolymer. The mono(meth)acrylate monomers may include a first mono(meth)acrylate with Tg between 50 °C and 175 °C and a second mono(meth)acrylate with Tg between −50 °C and 30 °C. The curable compositions may be applied onto a surface of a substrate then cured to form a low-tack adhesive layer on the surface. The curable compositions may be cured by exposure to visible radiation, UV radiation, LED radiation, laser radiation, electron-beam radiation, peroxide, accelerator, or heat. Methods for bonding substrates include contacting a second substrate to a low-tack adhesive layer on a first substrate, then heating the low-tack adhesive layer to bond the substrates and form a laminate.
摘要:
Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung von zur Herstellung von Polymeren, insbesondere Polyhydroxyurethanen (PHU), aus Alkenyletherpolyolen bzw. Präpolymeren, die von solchen Alkenyletherpolyolen abgeleitete Monomereinheiten enthalten, und Polythiolverbindungen sowie ein Verfahren zur Vernetzung von Alkenylethergruppen-haltigen Verbindungen mit Polythiolverbindungen. Des Weiteren richtet sich die Erfindung auf die Polymere und vernetzten Polymere, die mittels des erfindungsgemäßen Verfahrens erhältlich sind.
摘要:
The invention provides reactive resins compounds and compositions made from renewable materials, such as plant and animal oils. The reactive resins compounds and compositions may include an accelerator as part of their structure and are made from renewable materials containing a variety of functional groups. The compositions provide excellent adhesion and sealing capability.
摘要:
Die vorliegende Erfindung betrifft vinylterminierte Prepolymere auf Basis von Polyethern, die durch Umsetzung eines Polyethers mit einer gegenüber Isocyanat reaktiven funktionellen Gruppe mit mindestens einem Polyisocyanat, das eine mittlere Isocyanatfunktionalität im Bereich von 2,4 bis 3,5 aufweist, und mindestens einer Vinylverbindung, die eine gegenüber Isocyanat reaktive funktionelle Gruppe aufweist, erhältlich sind, wobei das Molverhältnis von Polyether zu Vinylverbindung im Bereich von 3:1 bis 1:3 liegt und das Verhältnis der Sunnnne der Molmengen von Polyether und Vinylverbindungen zu Isocyanatgruppen im Bereich von 1,5:1 bis 1:1,5 liegt. Entsprechende vinylterminierte Prepolymere weisen den Vorteil einer geringen Viskosität bei gleichzeitig guter Wasserlöslichkeit auf und können damit mit Vorteil für Anwendungen wie Injektionsmittel eingesetzt werden.