NEDEX produces solvent-free primary sealant KU-83B based on polyisobutylene for the insulating glass industry. The formulation has been specially developed to achieve very low gas and water vapor penetration rates. The product is compatible with Nedex secondary sealants. The solvents most commonly used in the formulations of secondary sealant formulations based on polyurethane and polysulfide show no signs of migrations with KU-83B. However, intensive compatibility tests according to EN1279-4:2018 should be carried out before use if KU-83B is not used together with Nedex secondary sealants PS-018 and KU-83.
KU-83B has very good adhesive properties on glass and metal. The effect of heat leads to a significant softening of primary sealants. Neverthless, KU-83B shows good stability even at temperatures around 100°C and do not flow out of their position into the space between the panes.
KU-83B has also been certified according to EN1279-4:2018. KU-83B has excellent low volatile values. They can be used without restriction in the production of insulating glass units according to EN1279:2018 with their passed tests and corresponding certificates.
- Carton slug (1,0 kg / 2,5 kg / 7,0 kg / 7,4 kg)
- ISO: ISO 9001 / ISO 14001 / ISO 45001
- EN: EN 1279-2:2018 / EN 1279-3:2018 / EN 1279-4:2018
- Others: EcoVadis
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