Designer reactivity

Wide selection of polyols and polyisocyanates for reactive adhesives

Reactive adhesives are attractive for many applications. Their properties can be controlled through careful selection of the reactive components. With their differing polyol and polyisocyanate components, reactive polyurethane adhesives can be formulated with the properties needed for almost any adhesive application.

Polyurethanes make effective adhesives because they form strong bonds to different substrates. Those bonds develop rapidly, providing good initial bond strength, for more efficient processing.

Given the wide range of polyol and polyisocyanate chemistries, reactive polyurethane adhesives are formulated with a vast array of properties. The physical properties and adhesion of reactive adhesive films are determined by:

Functionality and molecular weight of the polyol
Type, functionality and NCO content of the polyisocyanate
Number of urethane and/or polyurea groups
Crosslinking density

Covestro offers a broad range of products for the formulation of one- (1K) and two-component (2K) reactive adhesives. They are found in construction, automotive, footwear, furniture and food packaging applications. Our portfolio includes:

Polyether polyols, including diols and triols
Polyester polyols
Monomeric TDI
Monomeric and polymeric MDI polyisocyanates
Aliphatic polyisocyanates
MDI prepolymers
Low free-isocyanate prepolymers

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Polyisocyanates Prepolymers

Product Overview

Polyols

Product Overview, Products for reaction with polyisocyanates