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Wacker to show Geniosil polymers at ECS 2017 expo
27 Jan '17
2 min read
Wacker, Germany’s Munich-based technology leader in chemical industry, is set to showcase two new silane-terminated polymers, Geniosil XM 20 and Geniosil XM 25, at the European Coatings Show (ECS) 2017, the industry’s leading tradefair for paints and coatings, to be held from April 4 to 6, 2017, in Nuremberg, Germany, in hall 1, booth 1-510.
The polymers can be used as binders in adhesives and sealants, where they can modify the mechanical properties, in particular impacting modulus. This allows adhesives and sealants manufacturers to compound without the need of conventional plasticizers. In plasticizer-free adhesives, the new grades additionally enhance the bonding properties. In low-modulus sealants, they ensure high elastic recovery.
The new grades complement the portfolio of silane-terminated polyethers that the Munich-based chemical group markets under its Geniosil brand. As all silane-terminated polymers, Geniosil XM cures at room temperature under the influence of atmospheric humidity via silane cross-linking. In contrast to the other polymers, Geniosil XM 20 and Geniosil XM 25 only have one silane group at one of their chain ends, meaning they are crosslinkable only at that end.
Geniosil XM can be blended with other silane-terminated polymers in the desired ratio. On curing, the new polymers are firmly integrated into the resulting three-dimensional polymer network, reducing the crosslink density. This leads to a relatively wide-meshed network. Geniosil XM, thereby, modifies the elasticity of the cured material, resulting in a low modulus system with high elastic recovery.
Geniosil XM 20 is an alpha-silane-terminated polyether. This grade opens the door to plasticizer-free adhesives with extremely high elasticity. At the same time, these possess high ultimate strength and also adhere well to difficult substrates. Furthermore, the product can extend skin-over time. This provides the user with sufficient adhesive tooling time. Typical applications include wood-flooring adhesives and all-round adhesive sealants.
Geniosil XM 25, a gamma-silane-terminated polyether, allows the formulation of low-modulus sealants with exceptionally high elastic recovery. Should sealant manufacturers use this grade as a co-binder, low-modulus construction sealants that exceed ISO 11600 specifications are possible. Potential applications include sealants for expansion joints in buildings made of industrially prefabricated concrete parts and for connection joints between window frames and walls. (GK)
The polymers can be used as binders in adhesives and sealants, where they can modify the mechanical properties, in particular impacting modulus. This allows adhesives and sealants manufacturers to compound without the need of conventional plasticizers. In plasticizer-free adhesives, the new grades additionally enhance the bonding properties. In low-modulus sealants, they ensure high elastic recovery.
The new grades complement the portfolio of silane-terminated polyethers that the Munich-based chemical group markets under its Geniosil brand. As all silane-terminated polymers, Geniosil XM cures at room temperature under the influence of atmospheric humidity via silane cross-linking. In contrast to the other polymers, Geniosil XM 20 and Geniosil XM 25 only have one silane group at one of their chain ends, meaning they are crosslinkable only at that end.
Geniosil XM can be blended with other silane-terminated polymers in the desired ratio. On curing, the new polymers are firmly integrated into the resulting three-dimensional polymer network, reducing the crosslink density. This leads to a relatively wide-meshed network. Geniosil XM, thereby, modifies the elasticity of the cured material, resulting in a low modulus system with high elastic recovery.
Geniosil XM 20 is an alpha-silane-terminated polyether. This grade opens the door to plasticizer-free adhesives with extremely high elasticity. At the same time, these possess high ultimate strength and also adhere well to difficult substrates. Furthermore, the product can extend skin-over time. This provides the user with sufficient adhesive tooling time. Typical applications include wood-flooring adhesives and all-round adhesive sealants.
Geniosil XM 25, a gamma-silane-terminated polyether, allows the formulation of low-modulus sealants with exceptionally high elastic recovery. Should sealant manufacturers use this grade as a co-binder, low-modulus construction sealants that exceed ISO 11600 specifications are possible. Potential applications include sealants for expansion joints in buildings made of industrially prefabricated concrete parts and for connection joints between window frames and walls. (GK)
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