Abstract:
The invention relates to a functionalised polymer or a contact adhesive mass containing at least one functionalised polymer or block polymer. In the event of a functionalised polymer, said functionalised polymer has a weight average of the molar mass distribution of between 5,000 g/mol and 200,000 g/mol, preferably between 10,000 g/mol and 100,000 g/mol, and a difference between Mp and Mmin which is lower than 25,000 g/mol, preferably lower than 15,000 g/mol. According to the invention, (a) Mp represents the peak molar mass of a monomodal polymer or the peak molar mass of the smallest mode in a bimodal or multimodal polymer, (b) Mmin represents the lowest molar mass in the molar mass distribution, defined at each point where the cumulative frequency of the molar mass distribution has a value of 0.05, (c) the functionalised polymer has a linear, branched, or star-shaped structure, (d) the functionalised polymer carries at least one type of functionalisation that can be used for a subsequent cross-linkage of the functionalised polymer, (e) at least 50 % of the polymer chains of the functionalised polymer carry at least two functionalisations, (f) at least 75 % of the polymer chains of the functionalised polymer carry at least one functionalisation; and (g) the at least one type of functionalisation of the functionalised polymer results from the use of at least one type of functionalised monomer during the production of the functionalised polymer.
Abstract:
Die Erfindung betrifft eine Haftklebemasse, ein Klebeband, einen verklebten Verbund, ein Verfahren zum elektrischen Lösen des verklebten Verbundes und die Verwendung der Klebemasse zur Verklebung von Bauteilen in elektronischen Geräten, Automobilen, medizinischen Geräten und zahnmedizinischen Geräten. Die Haftklebemasse enthält wenigstens ein Elektrolyt und eine Basismasse, wobei die Basismasse wenigstens ein Polydien-Blockcopolymer und wenigstens ein Klebharz enthält.
Abstract:
Die Erfindung betrifft eine Haftklebemasse umfassend a) mindestens 38 Gew.-% und höchstens 58 Gew.-% einer Elastomerkomponente, wobei, i) die Elastomerkomponente zumindest 60 Gew.-%, bezogen auf die Elastomerkomponente, hydriertes Polyvinylaromat-Polydien-Blockcopolymer mit einem Polyvinylaromatenanteil von mindestens 18 Gew.-% und einem Peak-Molekulargewicht von 80.000 bis 500.000 g/mol, bestimmt gemäß GPC (Test I), enthält; ii) die Polydien-Blöcke im Wesentlichen voll hydriert sind; und iii) das hydrierte Polyvinylaromat-Polydien-Blockcopolymer einen ABA-Aufbau, (AB) n Z-Aufbau mit n = 2 oder radialen (AB) n -Aufbau oder radialen (AB) n -Z-Aufbau mit n ≥ 3 aufweist, wobei A = Polyvinylaromat und B = Ethylen und Butylen oder Ethylen und Propylen, Z = Derivat einer Kopplungssubstanz ist, und wobei der Ethylen-Anteil in den B-Blöcken mindestens 50 Gew.-% beträgt; b) eine Klebharzkomponente; c) eine Weichmacherkomponente und d) optional weitere Zuschlagsstoffe, wobei sich der Anteil der Elastomerkomponente auf das Gesamtgewicht der Haftklebemasse bezieht.
Abstract:
The invention relates to an adhesive film strip comprising at least two, particularly three, layers, which adhesive film strip can be detached without residues and nondestructively by expansive stretching substantially in the adhesion plane, with a carrier on which a first external adhesive compound layer is present on at least one side, wherein • the adhesive compound layer consists of adhesive compound formed on the basis of vinyl aromatic block copolymers and adhesive resins, wherein at least 75% of the resin (relative to the overall resin content) is selected with a DACP (diacetone alcohol cloud point) of greater than -20°C, preferably greater than 0°C, and • the carrier has at least one layer made from a polyurethane with an elongation at break of at least 100% and a restoring power of more than 50%. A nonpolar hydrocarbon resin or a polyterpene resin is particularly used as the tackifier for the adhesive compound(s).
Abstract:
The invention relates to a double-sidedly pressure-sensitively adhesive product having a haze value (measured by test method B) of 5% or less, comprising a carrier having a first surface and a second surface, and also a first layer of pressure-sensitive adhesive, disposed on the first surface of the carrier, and a second layer of pressure-sensitive adhesive, disposed on the second surface of the carrier, characterized in that the carrier has a modulus of elasticity of 2.5 - 500 MPa.