Patent application number | Description | Published |
20080226905 | Method for Producing Low Anisotropy Pressure-Sensitive Adhesives - The invention relates to a method for producing pressure-sensitive adhesives that have low or no anisotropy, the process elements including an adhesive supply system, an application unit and a placement element. A melt strip of the pressure-sensitive adhesive is produced between the outlet of the application unit and the point of placement on the placement element and is stretched. The invention is characterized by controlling the stretching of the pressure-sensitive adhesive in the free melt strip by adjusting an effective ration G which is defined as the ratio of the effective time Δt of the stretching to the stretching rate R, and which is adjust to a value of not more that 0.008 s | 09-18-2008 |
20100010170 | PRESSURE-SENSITIVE ADHESIVES AND PROCESS FOR PREPARING THEM - The invention relates to a process for preparing a pressure-sensitive adhesive based on at least one polymer, in the course of which said at least one polymer is crosslinked, the polymer having functional groups Y and having been admixed, further, with at least one kind of functionalized particles which have at least one nonpolymeric base unit, wherein the particles having a surface modification of the base unit, the surface modification of the particles having at least one kind of functional groups Z, which can not undergo any reaction with the functional group Y and is converted into group X by thermal energy, electromagnetic radiation, particulate radiation and/or sound energy and the crosslinking of the polymer being brought about at least in part by a reaction of the functional groups X of the particles and the functional groups Y of the polymer, and further to pressure-sensitive adhesives based on at least one crosslinked polymer component, the crosslinking of the polymer component being brought about at least in part by incorporation of the functionalized particles, the particles having at least one nonpolymeric base unit and also a surface modification of this base unit, and the surface modification of the particles having at least one kind of functional groups Z which, after conversion to group X by way of thermal energy, electromagnetic radiation, particulate radiation and/or sound energy, are capable of reacting with functional groups Y present in the polymer component, and also to the use of surface-modified functionalized particles having a nonpolymeric base unit as crosslinking reagents for crosslinking polymers for preparing pressure-sensitive adhesives. | 01-14-2010 |
20100221532 | Method for Producing High Anisotropy Pressure-Sensitive Adhesives - The invention relates to a method for producing pressure-sensitive adhesives that have low or no anisotropy, the process elements including an adhesive supply system, an application unit and a placement element. A melt strip of the pressure-sensitive adhesive is produced between the outlet of the application unit and the point of placement on the placement element and is stretched. The invention is characterized by controlling the stretching of the pressure-sensitive adhesive in the free melt strip by adjusting an effective ratio G which is defined as the ratio of the effective time Δt of the stretching to the stretching rate R, and which is adjusted to a value of at least 0.006 s | 09-02-2010 |
20110039970 | PRESSURE-SENSTIVE ADHESIVES AND PROCESS FOR PREPARING THEM - The invention relates to a process for preparing a pressure-sensitive adhesive based on at least one polymer, in the course of which said at least one polymer is crosslinked, the polymer having functional groups Y and having been admixed, further, with at least one kind of functionalized particles which have at least one nonpolymeric base unit, wherein the particles having a surface modification of the base unit, the surface modification of the particles having at least one kind of functional groups X, and the crosslinking of the polymer being brought about at least in part by a reaction of the functional groups X of the particles and the functional groups Y of the polymer, and further to pressure-sensitive adhesives based on at least one crosslinked polymer component, the crosslinking of the polymer component being brought about at least in part by incorporation of the functionalized particles, the particles having at least one nonpolymeric base unit and also a surface modification of this base unit, and the surface modification of the particles having at least one kind of functional groups X which are capable of reacting with functional groups Y present in the polymer component, and also to the use of surface-modified functionalized particles having a nonpolymeric base unit as crosslinking reagents for crosslinking polymers for preparing pressure-sensitive adhesives. | 02-17-2011 |
20120264903 | MULTIMODAL COPOLYMERS, PRODUCTION OF SAME, AND USE THEREOF IN BULK CONTACT ADHESIVE - Radical copolymerization method comprising the steps of (a) providing a monomer or monomer mixtures having unsaturated C═C double bonds; (b) starting the radical (co)polymerization by means of a first addition of an initiator, and then (c) adding at least one amino acid as a regulating substance, wherein the addition of the regulating substance takes place after reaching a conversion of 50% relative to the unsaturated C═C double bonds of the monomer or monomer mixture provided in step (a) | 10-18-2012 |
20130052435 | Double-Sided Self-Adhesive Products with High Optical Quality - 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. | 02-28-2013 |
20130183471 | LINER FOR PROTECTION OF ADHESIVES - In the case of a liner for the protection of adhesives, the protective effect is to be enhanced in respect of permeates originating from the environment and also permeates included during winding or stacking and other processing steps. This enhancement is accomplished through provision of a liner which comprises at least one adhesive release layer and at least one layer of a getter material capable of sorbing at least one permeable substance. | 07-18-2013 |
20140315016 | ADHESIVE SUBSTANCE, IN PARTICULAR FOR ENCAPSULATING AN ELECTRONIC ASSEMBLY - An adhesive and method for encapsulating an electronic arrangement with respect to permeants, wherein the adhesive and method have (a) at least one copolymer comprising at least isobutylene or butylene as comonomer kind and at least one comonomer kind which, considered as hypothetical homopolymer, has a softening temperature of greater than 40° C., (b) at least one kind of an at least partly hydrogenated tackifier resin, (c) at least one kind of a reactive resin based on cyclic ethers having a softening temperature of less than 40° C., preferably less than 20° C., and (d) at least one kind of a photoinitiator for initiating cationic curing | 10-23-2014 |
20140322526 | Adhesive Substance, in Particular for Encapsulating an Electronic Assembly - The invention relates to an adhesive substance, in particular for encapsulating an electronic assembly against permeates, said substance comprising: (a) at least one copolymer containing at least isobutene or butene as comonomer types and at least one comonomer type which, when regarded as a hypothetical homopolymer, has a softening temperature greater than 40° C.; (b) at least one type of an at least partially hydrogenated adhesive resin; (c) at least one acrylate- or methacrylate-based type of reactive resin with a softening temperature less than 40° C., preferably less than 20° C.; and (d) at least one type of photoinitiator for initiating radical curing. | 10-30-2014 |
20140363603 | LINER FOR PROTECTING ADHESIVE COMPOUNDS - Liner for protecting adhesives with respect to permeates originating from the surroundings or included during winding, stacking or other process steps, having at least one non-stick release layer and at least one getter material that is able to absorb at least one substance capable of permeation, the getter material being contained as a dispersed phase in at least one layer of the liner. | 12-11-2014 |
20150017452 | USE OF A LATENTLY REACTIVE ADHESIVE FILM FOR ADHESIVE BONDING OF ELOXATED ALUMINUM TO PLASTIC - Adhesive bonding of eloxated aluminum to plastic, with a product having at least one layer of a latently reactive adhesive film which has a thermoplastic component having a melting point T(melting) where 35° C.≦T(melting)≦90° C. and contains functional groups that can react with isocyanate and an isocyanate-containing component dispersed in particulate form in the thermoplastic and is essentially deactivated in the region of the particle surface, the particles having a start temperature T(start) where 40° C.≦T(start)≦100° C. and where T(start)≦T(melting). | 01-15-2015 |
20150037559 | PRESSURE-SENSITIVE ADHESIVE - Pressure-sensitive adhesive having high bond strengths to polar substrates as well as to non-polar substrates, comprising:
| 02-05-2015 |
20150037560 | Pressure-sensitive adhesive - A pressure-sensitive adhesive is to achieve good bond strengths at both high and low temperatures. This aim is accomplished by the adhesive comprising the following components: | 02-05-2015 |