Development and marketing of Q-T-polysiloxane hybrid resins as additives and co-raw materials for coatings, adhesives, composites and surface treatments
Siloxene AG
Brüttisellen (CH) · HeadquartersNew on Amplifa
About siloxene
siloxene AG is a chemical company founded in 2020 as a spin-off from Empa (Swiss Federal Laboratories for Materials Science and Technology) and headquartered in Brüttisellen near Zurich. The company develops and markets a proprietary platform of hybrid inorganic-organic polymer silanes (Q-T-polysiloxanes) in which T-functional silanes are grafted onto a dendritic Q-type ethyl silicate backbone. The products are used as additives, enablers and hybrid co-resins and are combined with commercially available polymer resins such as epoxy, STP, acrylate or isocyanate. Applications include coatings, adhesives and sealants, composites, surface pretreatments, fiber sizings as well as cement and mineral hydrophobization. The materials are PFAS-free, nano-free, low in VOCs and generally silicone-free. In addition to standard products, siloxene offers co-development with agile screening, formulation support, sample provision and guidance in test planning and scale-up.
- Site
- Brüttisellen
- Processes
- Coatings (additive/resin solutions for improved adhesion, durability, chemical and, Adhesives & sealants (additive/resin solutions for faster curing, stronger bonds,, Composites (fiber-matrix interface modification for strength, fatigue resistance,, Surface pretreatment / priming (conversion coating for improved adhesion on, Fiber sizing for inorganic and organic fibers, Hydrophobization (e.g. cement hydrophobization, surface protection), Co-development / formulation support (agile screening, test planning, evaluation, scale-up), Co-development and agile screening
- Materials
- XenCure™ Q-T-polysiloxane (reactive), XenSlick™ Q-T-polysiloxane (hydrophobic; methyl, propyl, iso-butyl, octyl, iso-octyl, phenyl), XenLink™ amphiphilic Q-T-polysiloxane (e.g. amino/octyl, mercapto/phenyl, glycidoxy/methyl), XenBlu™ water-dispersible Q-T-polysiloxane (CDC, CD, EDC, ED), XenRes™ E (epoxy resin hybrid), XenRes™ H (silane-terminated polymers / STP), XenRes™ U (acrylate/methacrylate hybrid), XenRes™ I (isocyanate hybrid)
- Certificates
- PFAS-free / nano-free / low-VOC, Silicone-free (Q-T-polysiloxanes), VOC-free (XenBlu™), ISO certification (documented)
- Founded
- 2020
- Industries
- Coatings, Adhesives & sealants, Composites, Surface treatments, Cosmetics, Construction materials / cement
- 01
Requirement definition with the customer
- 02
GHV agreement
- 03
Solution approach: selection of suitable Q-T-polysiloxane solutions
- 04
Sampling and dispatch of samples
- 05
Customer evaluation with accompanying analysis and optimization
- 06
Validation of performance data and scale-up
Product families & chemistry
XenCure™ – reactive Q-T-polysiloxanes
Reactive polysiloxanes for crosslinking, rapid curing, wetting and strong adhesion on metals and minerals.
XenSlick™ – hydrophobic Q-T-polysiloxanes
Hydrophobic polymers (methyl, propyl, iso-butyl, octyl, iso-octyl, phenyl) for slip/gloss properties, hydrophobization and emulsification.
XenLink™ – amphiphilic Q-T-polysiloxanes
Combinations of one reactive and one hydrophobic group (e.g. amino/octyl, mercapto/phenyl, glycidoxy/methyl) for balanced interface tuning.
XenBlu™ – water-dispersible Q-T-polysiloxanes
VOC- and surfactant-free resin concentrates or aqueous dispersions (CDC, CD, EDC, ED) for pretreatment, conversion coating and fiber sizing.
XenRes™ E – epoxy hybrid resin
Hybrid resin of Q-T-polysiloxane and epoxy resin with crosslinking capability, faster curing and adhesion promotion.
XenRes™ H – STP hybrid resin
Silane-terminated polymers with Q-T-polysiloxane technology for ultra-fast moisture curing and a tin-free composition.
XenRes™ U – acrylate/methacrylate hybrid resin
Hybrid resin with high crosslinking capability for radically curing binders and improved substrate adhesion.
XenRes™ I – isocyanate hybrid resin
Isocyanate-modified polysiloxanes with very low monomer content and integrated adhesion-promoter function.
Location
Brüttisellen
CHHeadquarters, R&D and scale-up
- Lot size
- Samples up to scale-up
- Materials
- Q-T-polysiloxanes, hybrid resins
- Testing and scale-up capacities (expanded in 2022)
Applications
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Coatings (additive/resin solutions for improved adhesion, durability, chemical andSurface | – | – | – | – | Metals, Minerals, Polymers |
| Adhesives & sealants (additive/resin solutions for faster curing, stronger bonds,Joining | – | – | – | – | Metals, Minerals, Polymers, Glass, Plastic |
| Composites (fiber-matrix interface modification for strength, fatigue resistance,Plastics | – | – | – | – | Fiber-reinforced plastics |
| Surface pretreatment / priming (conversion coating for improved adhesion onSurface | – | – | – | – | Aluminum, Steel, Copper, Cement, Ceramics, Oxides |
| Fiber sizing for inorganic and organic fibersSurface | – | – | – | – | Glass fiber, Organic fibers |
| Hydrophobization (e.g. cement hydrophobization, surface protection)Surface | – | – | – | – | Cement, Minerals |
| Co-development / formulation support (agile screening, test planning, evaluation, scale-up)Engineering | – | – | – | – | – |
Additional services
Quality & Compliance
The products are PFAS-free, nano-free, low in VOCs and generally silicone-free; XenBlu products are VOC-free, surfactant-free and label-free. XenRes resins offer defined properties such as ultra-fast moisture curing (H) and very low monomer content (I).
| Evidence | Brüttisellen |
|---|---|
| PFAS-free / nano-free / low-VOC | |
| Silicone-free (Q-T-polysiloxanes) | |
| VOC-free (XenBlu™) | |
| ISO certification (documented) |
History
- 2020
Founding of siloxene AG by Dr. Matthias Koebel as a spin-off to commercialize the Q-T-polysiloxane platform developed at Empa, with private and institutional investors.
- 2021
Operational start in January with a core team of three people and initial customer pre-projects.
- 2022
Team growth to ten specialists; expansion of testing and scale-up capacities.
- 2023
Introduction of the complete Xen product families XenCure™, XenSlick™, XenLink™, XenBlu™ and XenRes™.
- 2024
Scaling of applications in coatings, adhesives, elastomers and composites.
- 2026
Participation at WAC 2026 (London), ASC Annual Convention & EXPO 2026 (Nashville), JEC World 2026 (Paris) and in-adhesives 2026 (Munich).