Environmentally friendly adhesive raw materials for the automotive industry
Reliability and durability are the major requirements for any adhesive being used in the automotive or transportation industry.
Bayer Material Science offers a wide range of adhesive raw materials that meet these requirements easily and on top of that they are environmentally friendly and do not interfere with the aestetics of the vehicle. These products are mostly waterbased polyurethane or polychloroprene dispersions and silane-terminated polymers.
Waterbased adhesive raw materials based on polyurethanes and polychloroprenes
Polyurethane dispersions of the Dispercoll® U range are generally used for thermo-activatable adhesive applications like for the lamination of interior automotive parts, while polychloroprene dispersions of the Dispercoll® C range are mostly used for contact adhesives, e.g. for applications like foam bonding.
For this application latent-reactive adhesive systems are a good option as well. They are formulated as one-component systems while showing the typical properties of two-component systems.
This video shows the processing of a precoated TPO-film coated with a latent-reactive adhesive in an IMG-tool. (1,14 min., 8 MB)
Solvent-free structural adhesives based on Baycoll® und Desmodur®
These raw materials are generally used for reactive adhesives like the ones used for direct glazing applications and for the bonding of seating units or roof linings. Also, the bonding of SCM-parts and coated PP-applications are major applications for this type of adhesive to just name a few.
Some examples of raw materials for reactive adhesives in automotive applications:
In combination with Baycoll® for two-component adhesives and one-component moisture curing adhesives; for wood, metal, plastics
These products represent only a small part of the entire range of suitable raw materials for reactive adhesives.
The best of both worlds: polyurethanes and silicones - Silane-terminated prepolymers - Desmoseal® S
Silane-terminated prepolymers are polyurethane-prepolymers terminated with silanegroups for sealant-type adhesives. They combine the advantages of polyurethanes - good cohesion- with those of silicones - good adhesion. The major features are:
Polyurethane backbone with three reactive end-groups
Low consumption of catalyst (amine catalyst possible)
Excellent elasticity
Good adhesion on a large range of substrates (without primer)
Bubble-free (CO2-free) curing even in a high humidity environment
Overcoatability
Low susceptability to mold
STP are formulated as soft-elastic systems, that can be used to seal joints in sandwich elements or for applications like the sealing and bonding of truck or mobile home structures, where sandwich elements are furnished with profiles fulfilling sealing properties at the same time to just name a few examples.
Solventbased adhesive raw materials based on Desmocoll® and Desmodur®
