Montageklebebänder

• Main Authors: POSSEL, ESTHER VON, PRENZEL, ALEXANDER, HEINS, MATTHIAS, BRANDES, KAY
• Format: Patent
• Language: German
• Published: 07.04.2011
• Subjects: ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; ADHESIVES; CHEMISTRY; DYES; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; PAINTS; POLISHES; USE OF MATERIALS AS ADHESIVES

Die Erfindung betrifft ein doppelseitiges Klebeband, umfassend eine viskoelastische, erste Polymerschicht, eine zweite Polymerschicht auf der Ober- und eine dritte Polymerschicht auf der Unterseite der viskoelastischen, ersten Polymerschicht, wobei die viskoelastische, erste Polymerschicht auf einem Polymer basiert, das erhältlich ist durch Polymerisation einer Monomerzusammensetzung von 65 bis 97 Gew.-% Ethylhexylacrylat und/oder Butylacrylat, 0 bis 30 Gew.-% Methylacrylat, 3 bis 15 Gew.-% Acrylsäure, wobei die viskoelastische Zwischenschicht vernetzt ist, die zweite Polymerschicht auf einem Polymer basiert, das erhältlich ist durch Polymerisation einer Monomerzusammensetzung von 85 bis 95 Gew.-% Ethylhexylacrylat und/oder Butylacrylat, 5 bis 15 Gew.-% Acrylsäure, wobei diese zweite Polymerschicht unter Einsatz zumindest eines Epoxycyclohexylderivats in Abwesenheit von Beschleunigern thermisch vernetzt ist. Double-sided adhesive tape comprises a viscoelastic first polymer layer, a second polymer layer on the top side and a third polymer layer on the bottom side of the viscoelastic first polymer layer respectively. The viscoelastic first polymer layer based on a polymer, is obtainable by polymerization of a monomer composition comprising ethylhexyl acrylate and/or butyl acrylate, methyl acrylate and acrylic acid. The second polymer layer based on a polymer, is obtainable by polymerization of a monomer composition comprising ethylhexyl acrylate and/or butyl acrylate, acrylic acid. Double-sided adhesive tape comprises a viscoelastic first polymer layer, a second polymer layer on the top side and a third polymer layer on the bottom side of the viscoelastic first polymer layer respectively. The viscoelastic, first polymer layer based on a polymer, is obtainable by polymerization of a monomer composition comprising ethylhexyl acrylate and/or butyl acrylate (65-97 wt.%), methyl acrylate (0-30 wt.%) and acrylic acid (3-15 wt.%). The viscoelastic intermediate layer is cross-linked. The second polymer layer based on a polymer, is obtainable by polymerization of a monomer composition comprising ethylhexyl acrylate and/or butyl acrylate (85-95 wt.%), acrylic acid (5-15 wt.%). The second polymer layer is thermally cross-linked using at least one epoxycyclohexyl derivative in the absence of accelerators. Independent claims are also included for: (1) at least one sided adhesive tape, preferably at least two-layer adhesive tape comprising the first viscoelastic polymer layer exhibiting an elastic component of less than 80%, and a second polymer layer exhibiting an elastic component of more than 80%, provided on the top side of the first polymer layer; (2) producing a crosslinked acrylate pressure sensitive adhesive comprising polymerizing a monomer mixture comprising acrylic acid to at least 5 wt.% with epoxycyclohexyl derivative used as a crosslinker at least in the absence of accelerators; and (3) producing a double-sided adhesive tape, comprising the viscoelastic first polymer layer and the second polymer layer on the top side and the intermediate layer on the bottom side, comprising thermal crosslinking of at least one pressure sensitive layer based on the polymer, obtainable by polymerizing a monomer composition comprising ethylhexyl acrylate (58-65 wt.%), butyl acrylate (28-35 wt.%) and acrylic acid (5-15 wt.%), using at least one epoxycyclohexyl derivative as cross-linkers in the absence of accelerators.