Abstract:
A pressure-sensitive adhesive comprising a blend of at least two components, one of which comprises a block copolymer having at least the unit P(A1)-P(B1)-P(A1) and the second of which comprises a block copolymer having at least the unit P(B2)-P(A2)-P(B2); the blend forming an at least two-phase system.
Abstract:
Self-adhesive tape comprising a laminate composed of at least two pressure-sensitive adhesive (PSA) layers A and B laminated directly to one another, one or both of the surfaces to be laminated to one another of the PSA layers A and B having been chemically and/or physically pretreated prior to lamination, and the shear strength tSA/B of the self-adhesive tape at 25° C., 40° C. and 70° C. under a weight load of 1000 g being at least 80% of the shear strength tSo of the PSA layer A and/or of the PSA layer B, where tSo represents the shear strength of the PSA layer having the lower shear strength.
Abstract:
Pressure-sensitive adhesive comprising an acrylate block copolymer having at least two chemically distinguishable, covalently interlinked acrylate polymer blocks P in microphase-separated regions and each having a softening temperature of between −125 and +20° C.
Abstract:
Redetachable, self-adhesive device having a plate, the sides and/or front side of which have fastening means, if appropriate, and the rear side of which has a strip of an adhesive film which is adhesive on both sides and is adhesively attached in such a way that one end of the adhesive film protrudes beyond the plate as a grip, the adhesive film being of such a kind that the adhesive bond achieved with it can be released again by pulling in the direction of the bonding plane, stretching the strip, characterized in that the front side of the plate (1) has a gripping aid (5), by means of which the plate (1) can be held when releasing the adhesive bond again by pulling the strip (7).
Abstract:
Piece of adhesive film for a temporary bond, a) comprising a double-sided adhesive film b) whose adhesive surfaces have been rendered non-adhesive in areas lying opposite one another in an offset manner, where c) the non-adhesive areas only overlap slightly, or not at all, and d) the adhesive bond produced therewith can be separated by pulling apart the non-adhesive areas, in particular by pulling in the direction of the bond plane.
Abstract:
The invention provides an acrylate-based pressure-sensitive adhesive comprising a polymer blend having (a) at least a first component Kc which comprises a first acrylate block copolymer having at least two chemically distinguishable, covalently interlinked acrylate polymer blocks P, the at least two polymer blocks P independently of one another each being a homopolymer block of a first monomer or a copolymer block of a second monomer and a comonomer, and the first monomer of the homopolymer block and the second monomer of the copolymer block can be identical or different from one another, and the at least two polymer blocks P being present under application conditions in microphase-separated regions and each having a softening temperature of between −125 and +20° C., and (b) at least one second component LD, which is a second acrylate block copolymer, distinguishable from component Kc, having at least two chemically distinguishable, covalently interlinked acrylate polymer blocks P, with the features specified under (a), or is an acrylate polymer PS, which is a homopolymer of a first monomer or a copolymer of a second monomer and a comonomer, the acrylate polymer PS and the acrylate polymer blocks P having softening temperatures of between −125 and +20° C.
Abstract translation:本发明提供了一种丙烯酸酯基压敏粘合剂,其包含聚合物共混物,其具有(a)至少第一组分K c C,其包含具有至少两个化学上可区分的,共价连接的丙烯酸酯的第一丙烯酸酯嵌段共聚物 聚合物嵌段P,所述至少两个聚合物嵌段P彼此独立地各自为第一单体的均聚物嵌段或第二单体和共聚单体的共聚物嵌段,并且均聚物嵌段的第一单体和 共聚物嵌段可以相同或不同,并且所述至少两个聚合物嵌段P在微相分离区域中存在于施加条件下,并且各自具有-125℃和+ 20℃之间的软化温度,和(b) 至少一个第二组分L D D,其是与组分K区别的第二丙烯酸酯嵌段共聚物,其具有至少两个化学上可区分的共价杂交 具有(a)中规定的特征的丙烯酸酯聚合物嵌段P或作为第一单体的均聚物或第二单体和共聚单体的共聚物的丙烯酸酯聚合物P S S, 丙烯酸酯聚合物P S S和丙烯酸酯聚合物嵌段P的软化温度在-125℃和+ 20℃之间。
Abstract:
Use of a prior-cleaning cloth for an adhesive bond brought about by means of an adhesive film which is rereleasable without damage by pulling in the direction of the bond plane and which has an adhesive composition based on polymers and/or copolymers of synthetic rubber and/or natural rubber, characterized in that the substrate to be bonded is rubbed with a prior-cleaning cloth of this kind which is impregnated with a moisture-reactive organosilane, the organosilane being dissolved in a solvent or solvent mixture and being present therein in a concentration of 0.1-3% by weight, whereupon, following a waiting time of a few minutes, the adhesive film is pressed onto the treated area and then an article, hook or the like is bonded to the other side of the adhesive film, or else in that, after a waiting time of a few minutes, the adhesive film is pressed onto the treated area, an article, hook or the like already being located in bonded-on form on the reverse of the adhesive film.
Abstract:
Redetachable, self-adhesive device having a plate, the sides and/or front side of which have fastening means, if appropriate, and the rear side of which has a strip of an adhesive film which is adhesive on both sides and is adhesively attached in such a way that one end of the adhesive film protrudes beyond the plate as a grip, the adhesive film being of such a kind that the adhesive bond achieved with it can be released again by pulling in the direction of the bonding plane, stretching the strip, characterized in that the rear side of the plate (1) has laterally alongside the adhesively attached adhesive film (5) spacers (3A, 3B), the height of which is less than the thickness of the adhesive film (5).
Abstract:
Use of a strip of an adhesive film for a re-releasable adhesive bond based on thermoplastic elastomer and tackifying resins, the adhesive film having high elasticity and low plasticity and the adhesion being lower than the cohesion, the adhesive strength largely disappearing during extension of the film, the ratio of peel strength to tear strength being at least 1:1.5, and an adhesive bond produced therewith being releasable by pulling on the adhesive film in the direction of the plane of adhesion, one end of the strip being provided on both sides with a UV-opaque covering which at the same time serves as a tab for pulling.
Abstract:
The present invention relates to a pressure-sensitive adhesive transfer tape, taking the form of a carrierless adhesive tape with an adhesive layer comprising a pressure-sensitive adhesive based on a poly(meth)acrylate copolymer with the following monomers: a1) acrylic acid and/or acrylic esters of the following formula: CH2═C(R1)(COOR2), where R1=H or CH3 and R2 is an alkyl chain with 1-30 C atoms, a2) olefinically unsaturated monomers with functional groups, with monomers of group a1) being present to an extent of at least 50% by weight, based on the total component (a), and with monomers of group a2) being present at 0%-30% by weight, based on the total component (a), and b) a photoinitiator with a fraction of 0%-5% by weight, based on the overall polymer mixture, the pressure-sensitive adhesive being crosslinked to differing extents on its top and bottom faces by actinic radiation, the crosslinking of the pressure-sensitive adhesive being such that on both its top face and its bottom face it has a PSTC-1 adhesion of at least 1 N/cm and a difference between the adhesion on the top face and on the bottom face of at least 30%, preferably of at least 50%, based on the lower of the two adhesions.