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VESTANAT® IPDI and VESTANAT® T 1890 are used in RIM-systems for the encapsulation of windows for cars. These light stable and weather resistant seals ease the installation and improve the aerodynamics of the car. Moreover they allow the incorporation of other vehicle components like back lights.
Bonding of glass windows to the body is part of the passive safety concept. Therefore adhesives with high mechanical properties, elasticity and durability are required. Moisture curing PUR formulations are modified with crystalline DYNACOLL®7000 copolyesters tailoring initial strength and modulus. Quick setting adhesives lead to shorter drive-away times after repairing.
An important application for sealants in the automotive industry is the window glass segment for the direct sealing of windshields and side windows. Windshield sealants were introduced to the automotive industry in the 1970s, and remain standard practice today. Polyurethane sealants are used for this application.
The hydrophobic grades fumed silica grades AEROSIL® R 972 and AEROSIL® R 202 have been used successfully for many years as thixotropic and reinforcing agent in windshield sealants based on polyurethane. Dynasylan® GLYMO, an epoxy silane, is an ideal adhesion promoter for polyurethane windshield sealants. Finally, Dynasylan® 1124, which is a secondary aminosilane, is used successfully as high performance additive for polyurethanes primers
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