US 11,680,192 B2
Functionalized (co)polymers for adhesive systems
Thilo Dollase, Hamburg (DE); Markus Brodbeck, Stuttgart (DE); Alexander Fischer, Hamburg (DE); Marco Kupsky, Quickborn (DE); and Alexander Prenzel, Hamburg (DE)
Assigned to TESA SE, Norderstedt (DE)
Appl. No. 16/97,109
Filed by TESA SE, Norderstedt (DE)
PCT Filed Apr. 6, 2017, PCT No. PCT/EP2017/058295
§ 371(c)(1), (2) Date Oct. 26, 2018,
PCT Pub. No. WO2017/190911, PCT Pub. Date Nov. 9, 2017.
Claims priority of application No. 10 2016 207 550.0 (DE), filed on May 2, 2016.
Prior Publication US 2021/0222037 A1, Jul. 22, 2021
Int. Cl. C09J 133/06 (2006.01); C08F 220/32 (2006.01); C09J 7/38 (2018.01); C09J 7/30 (2018.01); B32B 7/12 (2006.01); C09J 133/08 (2006.01); C09J 133/10 (2006.01); C09J 133/12 (2006.01)
CPC C09J 133/068 (2013.01) [C08F 220/325 (2020.02); C09J 7/385 (2018.01); B32B 7/12 (2013.01); B32B 2333/08 (2013.01); B32B 2333/12 (2013.01); B32B 2405/00 (2013.01); C09J 7/30 (2018.01); C09J 133/08 (2013.01); C09J 133/10 (2013.01); C09J 133/12 (2013.01); C09J 2433/00 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A curable reactive adhesive system present on a substrate, and forming a reactive adhesive tape, the system comprising a polymer formed from a free-radical polymerization comprising one or more (meth)acrylate monomers, and optionally one or more vinylic comonomers,
where the said polymer has a weight-average molar mass Mw of at least 5,000 g/mol and at most 200,000 g/mol in which at least one of the (meth)acrylate monomers has been functionalized with at least one epoxy group to form epoxy-functionalized monomer(s), wherein all or some of the oxygen atoms in the at least one epoxy group bridges either an aliphatic C—C bond in at least one of the epoxy functionalized monomer(s), or a C—C bond that is part of an aliphatic hydrocarbon ring that is optionally hetero-substituted,
and,
the proportion of the epoxy functionalized monomer(s) is at least 30% by weight based on the total weight of all (meth)acrylic monomers and vinylic comonomers of the polymer, and the polymer's glass transition temperature in an uncured state is above 0° C. and below 120° C. and, the glass transition temperature of the polymer in its cured state is at least 40° C. higher than that of the polymer in its uncured state,
and further wherein,
the curable reactive adhesive system, when provided as a layer having diameter of 21 mm and a thickness of 100 microns between a circular polycarbonate substrate having a thickness of 1 mm and a diameter of 21 mm, and an anodized aluminum substrate having a thickness of 3 mm, the layer being prelaminated to the polycarbonate substrate at 70° C. for not in excess of 30 seconds, and when the polycarbonate substrate with the prelaminated layer is compressed against the aluminum substrate at 180° C., for 12 seconds at a pressure of 10 bar, the radial squeeze-out of the layer of the curable reactive adhesive system extending radially outwardly from the edge of the circular polycarbonate substrate does not exceed 1.5 mm.