Abstract: A process for preparing a pressure-sensitive polyacrylate adhesive, characterized in that a polyacrylate composition including the atomic sequence C-S-C is admixed with at least one metal compound of type (L)yM where M=metal atom or metal ion L=counterion or ligand y=0 to 6.

Abstract: The invention relates to a pressure-sensitive adhesive tape, particularly for producing LCD displays, comprising two surfaces while also being provided with at least one support having two supporting surfaces and a pressure-sensitive layer on each of the two supporting surfaces. The invention is characterized in that at least one of the two surfaces of the pressure-sensitive adhesive tape has silvery reflective properties.

Abstract: The use of macromonomers which have a glass transition temperature of at least 20° C., have at least one oligomeric and/or polymeric structural unit which is incompatible with polyacrylates, and have at least one polymerizable double bond in the form of a vinyl, acrylate and/or methacrylate unit as comonomers in the preparation of oriented polyacrylate pressure sensitive adhesives.

Abstract: A pressure sensitively adhesive polyacrylate according to a composition known per se, characterized by crosslinked and functionalized polymer particles which on the basis of their chemical nature are suitable for assisting a crosslinking reaction of the pressure sensitive adhesive.

Abstract: The invention relates to a pressure-sensitive adhesive. It is envisaged that this pressure-sensitive adhesive comprises at least 50% by weight of at least one block copolymer formed from a comonomer composition comprising acrylic acid derivatives or methacrylic acid derivatives, the block copolymer comprising a unit P(A)-P(B)-P(A) comprising a polymer block P(B) and two polymer blocks P(A); the polymer blocks P(A) independently of one another representing homopolymer or copolymer blocks of monomers A, the polymer blocks P(A) each having a softening temperature in the range from +20° C. to +175° C.; P(B) representing a homopolymer or copolymer block of monomers B, the polymer block P(B) having a softening temperature in the range from ?130° C. to +10° C.; and the polymer blocks P(A) and P(B) being not homogeneously miscible with one another.

Abstract: Adhesive sheet, especially for adhesively bonding electrical modules in card bodies, composed at least of a layer of an adhesive system based on at least one heat-activable adhesive, characterized in that the softening temperature of the adhesive system is situated in the range from 65° C. to 165° C., electrically conductive particles are admixed with the adhesive system, the particles having on average a diameter of from 25 to 100 ?m, with the proviso that the average diameter of the conductive particles is greater than the layer thickness of the adhesive system, the conductive particles have a copper or nickel core.

Abstract: An initiator system for radical polymerization, which comprises a combination of compounds of the formulae:

Abstract: Process for preparing crosslinked pressure-sensitive adhesives at least partly based on block copolymers comprising at least one polyvalent thioether unit, characterized in that at least the following process steps are carried out: two-stage or multi-stage free-radical addition polymerization of at least two copolymerizable monomers in the presence of at least one polyvalent mercaptan, at least one of the monomers being functionalized such that on irradiation with ultraviolet rays it initiates a UV crosslinking, the polymerization producing block copolymers containing at least one polyvalent thioether unit, coating of the polymer from the melt onto a backing, crosslinking of the polymer on the backing by irradiation with ultraviolet radiation.

Abstract: An adhesive tape comprising at least a three-layer product structure having the following layers A, B, and C with the layer sequence ABC: Layer A: heat activatable adhesive having a characteristic activation temperature TA of at least +30° C., Layer B: crosslinked polyurethane carrier material, Layer C: polyacrylate PSAs having a static glass transition temperature TG,C of not more than +15° C.

Abstract: A process for preparing a pressure-sensitive adhesive, wherein first of all a hotmelt pressure-sensitive adhesive is prepared by a method known per se, characterized in that the hotmelt pressure-sensitive adhesive is foamed, the foamed hotmelt pressure-sensitive adhesive is placed onto a coolable roll, and crosslinking takes place on the coolable roll by exposure to actinic radiation.

Abstract: The invention relates to a pressure-sensitive adhesive. Provision is made for this pressure-sensitive adhesive to comprise (a) a first layer of a first polyacrylate pressure-sensitive adhesive containing at least 50% by weight, based on the first polyacrylate pressure-sensitive adhesive, of an acrylic and/or methacrylic ester of the formula CH2?CH(R1)(COOR2); (b) a second layer comprising (b1) a polyacrylate containing at least 50% by weight, based on the polyacrylate, of an acrylic and/or methacrylic ester of the formula CH2?CH(R1)(COOR2, and (b2) at least 15% by weight, based on the second layer, of chalk; and (c) a third layer of a second polyacrylate pressure-sensitive adhesive containing at least 50% by weight, based on the second polyacrylate pressure-sensitive adhesive, of an acrylic and/or methacrylic ester of the formula CH2?CH(R1)(COOR2) in each formula R1 is H or CH3 and R2 is an alkyl chain having 1 to 20 carbon atoms.

Abstract: A process for crosslinking a coating of pressure-sensitive adhesive systems on a backing material, characterized in that the pressure-sensitive adhesive system present on the backing material is irradiated with accelerated electrons by means of an irradiation means, the backing material coated with the pressure-sensitive adhesive system to be irradiated runs via a roller, there is a contact medium between the roller and the backing material during irradiation.

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: A pressure-sensitive adhesive composition composed of a polymer formed from acrylic and methacrylic acid derivatives and functionalized vinyl compounds, and PMMA spheres.

Abstract: The invention relates to a bilayer pressure-sensitive adhesive. Provision is made for the bilayer pressure-sensitive adhesive to comprise an apolar layer and a polar layer, the apolar layer and the polar layer each comprising a polyacrylate pressure-sensitive adhesive having a static glass transition temperature of not more than +15° C., and the surface energy of the apolar layer differing from the surface energy of the polar layer by at least 5 mN/m.

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.

Abstract: A process for preparing pressure sensitive adhesives based on acrylate hotmelt, in which a monomer mixture including at least the following monomers (a) 70 to 100% by weight of compounds from the group of (meth)acrylic acid and the derivatives thereof corresponding to the following general formula is free-radically polymerized in solution wherein I. the polymerization is initiated using at least one dissociating photoinitiator and by irradiation with ultraviolet light, the photoinitiator being added to the monomer mixture before the beginning of the polymerization and/or to the reaction mixture in the course of the polymerization, II. the polyacrylate is freed from the solvent, III. the polyacrylate is processed further in the melt.

Abstract: The invention relates to a process for preparing acrylic hotmelt pressure-sensitive adhesives. Provision is made here for this process to comprise the steps of (a) providing a pressure-sensitive adhesive polyacrylate and a difunctional or polyfunctional reactive resin, the pressure-sensitive adhesive polyacrylate having at least one functional group which enables it to react with the difunctional or polyfunctional reactive resin; (b) preparing a mixture comprising the pressure-sensitive adhesive polyacrylate and the difunctional or polyfunctional reactive resin by mixing the pressure-sensitive adhesive polyacrylate in the melt with the difunctional or polyfunctional reactive resin; (c) coating the mixture onto a backing material; and (d) thermally curing the mixture on the backing material.

Abstract: A pressure sensitive adhesive comprised of P(A)-P(B)-P(A) block copolymers, wherein P(A) has a glass transition temperature of 0° C. or below, P(B) has a glass transition temperature of 20° C. or above, and P(A) and P(B) are immiscible.

Abstract: In a continuous two-stage process for preparing solvent-free polyacrylate hotmelt pressure sensitive adhesives which is gentle on the polymer and redeploys the solvent used in the process the following steps are carried out: polymerizing a self-adhesive pressure sensitive adhesive in solution, the solvent having a low vapor pressure; continuously mixing the polymer solution with antioxidants and preheating the mixture under superatmospheric pressure without boiling it; concentrating the polymer solution to a residual solvent content of less than 0.