UV protection films, bird protection films, laminated glass K410, UV and NIR absorbers as well as custom syntheses up to 1000 kg
sema Gesellschaft für Innovationen mbH
Coswig (Anhalt) · Industriestraße 12 · 6000 m² industrial siteNew on Amplifa
About sema GmbH
sema Gesellschaft für Innovationen mbH was founded in 1998 in Wolfen and has been based since 2000 in Coswig (Anhalt) on a 6000 m² industrial site. The company develops and produces functional films, laminated glass solutions and specialty chemicals for protection against UV and NIR radiation. The product range includes self-adhesive, transparent UVA solar protection films (semaSORB DK400), bird protection films (PROBIRD DK400), PVB laminating films (FC400) as well as laminated and insulating glass K410 with radiation protection up to 410 nm, manufactured by wet bonding or laminating processes. In addition, UV and NIR absorbers, high-refractive-index acrylates, VCI corrosion protection films and additives for coatings are synthesized. Custom syntheses are performed in quantity ranges from 1 g to 1000 kg, including oxidations, diazotizations, vacuum distillation and crystallization. In-house testing services include artificial ageing tests with xenon irradiation (1000–4000 h), spectral measurements up to 2500 nm and luminescence measurements. Customers are found in glass architecture, museums and heritage conservation, agriculture, the packaging industry, forensic science as well as research and teaching.
- Site
- Coswig (Anhalt)
- Processes
- Custom synthesis (quantity range 1 g to 1000 kg), Custom synthesis of chemical products, Oxidations and dehydrogenations, Diazotizations, Purification of liquids by vacuum distillation (also under inert gas atmosphere), Purification of dyes by crystallization, Production of UV absorbers (semaSORB), Wet bonding / wet lamination of films onto glass panes
- Materials
- UVA solar protection film semaSORB DK400, Bird protection film semaDK / PROBIRD DK400, Laminating film semaSORB FC400 (PVB), Laminated glass K410, Insulating glass K410, VCI storage film semaDT180, Triazine derivative V (3,3′,3”-(1,3,5-triazine-2,4,6-triyltriamino)-tris[2-hydroxy-5-sulfobenzoic, semaLignoDur (lignin-based glaze)
- Founded
- 1998
- Industries
- Glass architecture / construction, Museums and heritage conservation, Forensic science, Agriculture, Packaging industry, Automotive industry
- 01
Synthesis of functional additives (UV/NIR absorbers, acrylates, VCI active
- 02
Formulation of recipes and coating pastes
- 03
Coating of substrate materials (films, plastics, glass, paper)
- 04
Wet bonding process and laboratory casting/laminating
- 05
Manufacture of laminated glass K410
- 06
Artificial ageing test and spectral characterization
Site
Coswig (Anhalt)
DEHeadquarters with production, laboratory and administration
- Part weight / size
- Sample sizes up to 1 m² (ageing test); laminated glass from
- Lot size
- 1 g to 1000 kg (custom synthesis)
- Materials
- UV/NIR absorbers, acrylates, VCI active agents, PVB/PET/PMMA films, silver sols, lignin
- Laboratory casting and laminating system
- UV irradiation chamber with xenon radiation source (1000–4000 h)
- Vacuum distillation unit (also under inert gas atmosphere)
- Spectrophotometer UV/VIS up to 1100 nm and UV/VIS/NIR up to 2500 nm
Products
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Custom synthesis (quantity range 1 g to 1000 kg)Engineering | – | – | – | – | Chemicals, Additives |
| Custom synthesis of chemical productsEngineering | – | – | – | – | – |
| Oxidations and dehydrogenationsEngineering | – | – | – | – | Anthraquinone dyes, aromatic carboxylic acids |
| DiazotizationsEngineering | – | – | – | – | – |
| Purification of liquids by vacuum distillation (also under inert gas atmosphere)Engineering | – | – | – | – | – |
| Purification of dyes by crystallizationEngineering | – | – | – | – | Dyes |
| Production of UV absorbers (semaSORB)Plastics | – | – | – | – | – |
| Wet bonding / wet lamination of films onto glass panesSurface | – | – | – | – | Glass, Plastics |
| Manufacture of laminated glass K410 (2 mm thickness up to composite of 2 x 4 mm glass)Joining | – | – | – | – | Glass, PVB film |
| Coating of substrate materials (films, plastics, glass, paper) with functional layersSurface | – | – | – | – | Films, Plastics, Glass, Paper |
| Laboratory-scale casting and laminatingPlastics | – | – | – | – | – |
| Artificial ageing test with xenon radiation sourceTesting | – | Sample sizes up to 1 m² | – | 1000-4000 h Xe irradiation | – |
| Spectral measurement of absorption and transmission UV/VIS up to 1100 nm and UV/VIS/NIR up to 2500Testing | – | – | – | – | – |
| Luminescence measurements 200 nm to 800 nmTesting | – | – | – | – | – |
| Production of UV-protective substancesPlastics | – | – | – | – | – |
| Production of specialty chemicals (corrosion protection, surface treatment, forensic science)Plastics | – | – | – | – | – |
| Research & development / product development with upscalingEngineering | – | – | – | – | – |
| Research cooperations national and internationalEngineering | – | – | – | – | – |
4 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Industrial site with production area | – | – | 6000 m² industrial site | 2000 | Coswig (Anhalt), Industriestraße 12 |
| Laboratory casting and laminating system | – | – | Laboratory scale | – | Coswig |
| UV irradiation chamber with xenon radiation source (artificial ageing) | – | – | Sample sizes up to 1 m², Xe irradiation duration 1000-4000 h | – | Coswig |
| Vacuum distillation unit (also under inert gas atmosphere) | – | – | – | – | Coswig |
Additional services
Reference customers
Company History
- 1998
Foundation of sema Gesellschaft für Innovationen mbH in Wolfen by Dr. rer. nat. Udo Dieckmann and Dipl.-Ing. Karin Rauch; development of photochromic switching glasses based on silver sols
- 1999
Development of a process for the production of photochromic switching glasses
- 2000
Relocation to Coswig, acquisition of a 6000 m² industrial site, start of production of UV-protective substances
- 2001
Development of plant strengthening agents based on renewable raw materials; synthesis of the UV protection additives semaSORB
- 2002
UV-protective transparent sol/gel coatings for glass together with GMBU e.V. Dresden
- 2004
Start of custom syntheses in the quantity range 1 g to 1000 kg
- 2005
UV protection doping of PVB laminating films for laminated safety glass with bandpass filter at 400 nm
- 2006
UV-stabilized fire protection layer in cooperation with Schott AG
- 2007
Development of novel trap materials for forensic science
- 2008
Coating formulations on PET/PMMA films with bandpass filtering at 400 nm
- 2009
Synthesis of novel VCI active agents with Nordenia Deutschland Gronau GmbH
- 2010
Research cooperation with the IAPP of TU Dresden on novel IR absorbers
- 2012
DE patent no. 10 2012 009 965 in cooperation with RKW Frankenthal
- 2013
PCT patent for inhibition of potato sprouting; semaSORB PROBird DK400 against bird strikes
- 2014
semaSORB DK400 UVA protection film; DE patent for UV/VIS laminated glass with bandpass filter 400–420 nm
- 2018
K410 laminated glass technology for glasses with protection up to 410 nm
- 2020
Batt3D research project on solid-state batteries
- 2021
AdaptStick project on functionalizable, conductive threads
- 2022
WIR! – GRAVOmer joint project on the functionalization of film coatings
- 2023
WaZABi joint project on zinc-air batteries