Polyurethane raw materials for reactive adhesives

Reactive one- and two-component polyurethane adhesives and sealants obtain their property profile by crosslinking with polyisocyanates. Polyisocyanates determine properties like elasticity, cohesion and strength of the finished product. The large portfolio of polyisocyanates and polyols of Bayer MaterialScience makes it possible to formulate reactive adhesives for a large range of properties and applications.

The mechanical properties and the adhesion of the adhesive film are determined by:

• The functionality and the molecular weight of the polyol
• The type, the functionality and the NCO-content of the polyisocyanate
• The number of urethane and/or polyurea groups
• The crosslinking density that can be obtained in function of the molecular weight and the functionality of all components

A small selection of raw materials for reactive polyurethane adhesives

Monomeric MDI polyisocyanates
Polymeric MDI polyisocyanates
Aliphatic polyisocyanates
MDI prepolymers
Low free-monomer prepolymers
TDI-Monomers
Polyether polyols - Diols
Polyether polyols - Triols
Polyester polyols

These products represent just a fraction of our entire product range. If you do not find a suitable product for your application, our experts are happy to assist you with a recommendation.

Additional information on raw materials for reactive adhesives in these materials:

Presentation for FEICA, Sept. 2008:
"New PU-Raw Materials for Adhesives and Sealants without R 40 labeling" (englisch)

Brochure: Prepolymers - Products & Applications