Dry bonding acrylate adhesive layers

• Main Authors: Torres Cano Elisabeth, Bankmann Dennis, Pela Roberto, Leon Vincent, De Mendizabal Zalaikin Julen, Niembro Sandra
• Format: Patent
• Language: English
• Published: 17.10.2017
• Subjects: ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; ADHESIVES; CHEMISTRY; COMPOSITIONS BASED THEREON; DYES; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PERFORMING OPERATIONS; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; USE OF MATERIALS AS ADHESIVES

A radiation curable adhesive comprising (i) (meth)acrylic monomer(s) and/or oligomer(s), wherein said (meth)acrylic monomers or oligomers comprise 5 to 50 wt % of esters of (meth)acrylic acid with polyetherpolyols having the formula HO-((CH2)m-O)n-X wherein m=2, 3 or 4; n=2 to 50; X=H, linear, branched or aromatic C1 to C12-alkyl, the ester having a molecular weight from 150 to 2000 g/mol; (ii) non-reactive (co)polymer(s) based on unsaturated monomers, wherein said unsaturated monomers are selected from vinyl esters, (meth)acrylate esters and C2 to C8 unsaturated olefins, the (co)polymer having a molecular weight from 5000 g/mol to 500000 g/mol, such adhesive can form a solid adhesive layer after being cross-linked by radiation, the layer, has a non tacky surface but can be adhesively bonded under pressure to a second layer of the adhesive.